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Joint Committee on Artificial Intelligence díospóireacht -
Tuesday, 29 Sep 2026

AI and the Environment: Discussion (Resumed)

We have received apologies from Senator Harmon and Deputy O'Donovan. I advise members of the constitutional requirement that members must be physically present within the confines of the Leinster House complex in order to participate in public meetings. The evidence of witnesses physically present or who have given evidence from within the parliamentary precincts is protected by absolute privilege in respect of the presentations they make to this committee. However, they are expected not to abuse this privilege and it is my duty, as Chair, to ensure this privilege is not abused. If their statements are potentially defamatory in relation to an identifiable person or entity, I will direct them to discontinue their remarks. It is imperative that they comply with any such direction.

Members are reminded of the long-standing parliamentary practice to the effect that they should not comment on, criticise or make charges against a person outside the Houses or an official, either by name or in such a way as to make him or her identifiable.

We are continuing on the theme of AI and the environment. We are joined by the CRU, EirGrid and ESB Networks. I thank their representatives for attending. From ESB Networks we are joined by Mr. Nicholas Tarrant, managing director, Mr. Alan Rossiter, head of strategy and network development, and Ms Afra Ronayne, regulatory and commercial manager. From EirGrid we welcome Mr. Errol Close, chief corporate services officer, Dr. Liam Ryan, chief energy transition officer, and Mr. Mark Dineen, director of technology services.

From the Commission for Regulation of Utilities, CRU, I welcome Mr. Jim Gannon, commissioner, Mr. Conor McEvoy, manager of electricity networks, Mr. Rory Mee, acting director for energy safety, and Dr. Phil Hemmingway, director of decarbonisation.

Mr. Tarrant will deliver his opening statement on behalf of ESB Networks.

Mr. Nicholas Tarrant

I thank the members of the committee for the invitation to today's meeting. I am managing director of ESB Networks. I am joined by my colleagues Mr. Rossiter, head of strategy and development, and Ms Ronayne, regulation commercial manager. I welcome the opportunity to speak to the committee today under the broad heading of AI and the environment. I will briefly introduce our role as distribution system operator and, given the role of ESB Networks, I will focus my opening statement on connection policy for data centres to the electricity distribution network.

I would like to outline some key points that summarise ESB Networks' role in managing electricity network, including with respect to the connection of data centres. ESB Networks' role is to design, build, own, operate and maintain the electricity distribution network, which brings electricity to homes, farms and businesses across Ireland. As transmission asset owner, our role is to design, build, own and maintain the onshore electricity transmission network, which is the equivalent to electricity motorways, where we work in close co-operation with EirGrid in its role as transmission system operator. ESB Networks operates under a regulatory framework overseen by the CRU.

ESB Networks is planning to invest up to €13.4 billion of capital investment under price review 6 for the period 2026 to 2030 across all of our work programmes, including large new transmission and restoration projects. This is a critical programme of work overseen by the CRU to support growing housing connections and our growing economy and help Ireland achieve its climate action goals. We have included an appendix with a sample list of projects and video links to give the committee a sense of the work under way during 2026, the first year of the price review period.

At the distribution network level, there are 33 data centres connected, equivalent to approximately 427 MVA of connected capacity, with a further additional 10 MVA of contractor capacity. ESB Networks has a distribution system operator licence obligation to connect customers in a non-discriminatory manner. This applies to all customer types. Where there are specific directions from the CRU, ESB Networks must implement these directions in regard to the connection of customers.

In November 2021, the CRU published a direction to the system operators related to data centre connections and grid connection processing. This direction set out the criteria that the system operators, that is, EirGrid and ESB Networks, were required to consider in assessing data centre connection applications. In December 2025, the CRU released a decision paper on the connection policy for large users, which superseded the previous direction in 2021. Under the CRU 2025 large user connection policy decision, the system operators were directed to develop an application and engagement process for data centres to facilitate the implementation of the decision.

ESB Networks developed this process in early 2026 and, together with EirGrid, hosted an industry webinar in April to present the process to stakeholders. The process was subsequently published on our website in May 2026. The process details the method by which data centres can apply for a distribution connection and how these will be assessed under the criteria in the CRU decision paper. These criteria include factors such as the maximum import capacity of the data centre, whether the data centre is in a constrained or unconstrained location of the electricity network, the requirement for the data centre applicant to provide new dispatchable generation as an auto producer or stand-alone generation, and the requirement to meet at least 80% of its annual demand through the provision or procurement of additional renewable electricity generated in the Republic of Ireland.

We will continue to work with the CRU and industry stakeholders to implement the large energy users connection policy. The Government published the large energy user action plan in January 2026 and ESB Networks is working with other stakeholders and progressing relevant actions set out in the plan.

Go raibh maith agaibh go léir. I will hand back to the Cathaoirleach and look forward to taking any questions from the committee.

Go raibh maith agat. We will move on to Mr. Close to deliver his opening statement on behalf of EirGrid.

Mr. Errol Close

I thank the Cathaoirleach and members of the committee for the opportunity to join them today. I am EirGrid’s chief corporate services officer, and I am here today with my colleagues Liam Ryan, chief energy transition officer, and Mark Dineen, director of technology services. I welcome the opportunity to speak about the role artificial intelligence will play in supporting EirGrid in operating a reliable electricity supply today while accelerating the delivery of the power system Ireland will need for a clean, secure and economically competitive future.

EirGrid is Ireland’s transmission system operator, responsible for planning the country’s long-term electricity needs. We are regulated by the Commission for Regulation of Utilities and work closely with colleagues in ESB Networks in their respective roles as the distribution system operator and the onshore transmission asset owner. EirGrid ensures the operation and development of a safe, secure and reliable high-voltage transmission grid, balancing supply and demand every minute of the day. We do this at a pivotal time for Ireland, with the electrification of society and the integration of renewable energy.

We are now living through a transition into the digital age. Recognising the clear ambition set out in Government policy, we understand the central role energy will play in enabling Ireland’s energy future. Coupled with this is the growth in our digital economy and, specifically, data centres. We connect large energy users to the transmission system in line with direction from our regulator, the Commission for Regulation of Utilities. There are 14 data centre campuses connected directly to the transmission system in Ireland, with a further three contracted to connect that have not as yet connected. We are working closely with the regulator and the Government to ensure the electricity system can support all Government policy, including continued growth in Ireland’s digital economy.

Following the most recent direction on data centres from the CRU in December 2025, EirGrid and ESB Networks have developed new connection processes as required by the CRU, which outline a pathway for new data centre applicants to connect to the transmission system. This means that any new data centres must demonstrate the capability to meet at least 80% of annual demand through renewable electricity and must demonstrate the ability to provide onsite or proximate dispatchable generation or storage. Additionally, applications cannot proceed in constrained areas.

We are also working with the Government on the next steps for implementing the large energy users action plan, LEAP, to facilitate future investment by large energy users while unlocking Ireland’s renewable energy opportunity in the medium to long term. It prepares for a plan-led approach for the co-location of large energy users with renewable energy supply within green energy park locations across our regions. This aligns industrial policy with other strategic Government priorities to accelerate opportunities for regional development of sectors with large energy users such as life sciences, semi-conductors, artificial intelligence and data centres.

We are progressing the most ambitious capital programme of infrastructure development ever undertaken on the transmission system in Ireland, supporting national and regional economic growth, a resilient society and the digital economy. This includes connecting significant volumes of offshore and onshore wind, solar and conventional generation while reinforcing the grid to enable this power to reach demand customers throughout the country.

As part of our work, we are making Ireland’s grid renewable ready, in line with the Government’s climate action targets. The Government and the regulator have provided a package of €18.9 billion to EirGrid and ESB Networks over the next five years to deliver electricity infrastructure across the country. Over the next five years, EirGrid will progress 381 transmission infrastructure projects across the country in partnership with ESB Networks. These projects include customer connections, transmission reinforcements and asset upgrades to deliver on social and economic growth, security of supply and further penetration of renewable energy on the system. This investment must be met with a transformative step change in grid delivery, one that is reflected in EirGrid’s new corporate strategy, an ambitious roadmap for the next five years. The strategy sets out a clear purpose, to power up Ireland’s electricity grid for a clean energy future, a future where every home, business and community is powered by secure, clean and affordable electricity. As part of this new strategy, we have set out a number of key enablers to support the delivery of a clean energy future. Central to this is a digitally driven approach, harnessing data, digital tools and technology to strengthen system operations and enable long-term strategic decision-making.

EirGrid has been internationally recognised for operating a power system with high levels of variable renewable generation, allowing for up to 75% of electricity to come from renewable sources at any one time. This achievement has been built on a culture of innovation and the use of digital tools. This includes, for example, a look-ahead security assessment tool, an advanced control centre tool that was co-developed by EirGrid and is used to evaluate the dynamic performance and security of the electricity transmission grid.

The next phase will be more demanding, as we work to build up from 75% to 95%, balancing electricity supply and demand every minute of the day from the national control centre. A key priority of our group strategy is to deliver a new state-of-the-art national control centre with the capability to operate the clean power system of the future. As we plan this, we will be integrating digital tools such as AI-enabled modelling and forecasting to assist in balancing supply and demand. To this end, EirGrid has been researching and testing the use of AI to assist with challenges such as day-ahead forecasting of power coming into and leaving the grid.

The results of this research have been published internationally by the Institute of Electrical and Electronics Engineers, IEEE. Digital and AI are not side initiatives for EirGrid; they are fundamental enablers of our people and organisation, strengthening how a modern, innovative power system is run.

Moving forward, we are looking at AI use cases for different areas of the organisation, including quicker processing of large volumes of data across different data sources, to meet reporting and analytical requirements for the future planning of the system, for example, generation and demand requirements. AI is not a replacement for professional judgment; it is enabling tool to support delivery and capability. Used appropriately, it will help EirGrid deliver with greater insight, pace and transparency, while maintaining the high standards expected of a transmission system operator.

Responsible use is at the core of how EirGrid has adopted AI and other digital tools and remains in line with the policies of counterparts across the EU that we work with closely, including the European Network of Transmission System Operators for Electricity, ENTSO-E, which has stated, "leveraging digitalisation and artificial intelligence is no longer optional, but essential for ensuring secure and efficient operation of the electricity grid." For an operator of critical national infrastructure, this reinforces the need to pair innovation with strong governance, a best-in-class cybersecurity posture, regulatory confidence and human oversight.

We acutely understand these needs and that is why, by means of PR6 investment, paired with our group strategy, we are continuing to invest in people to ensure we are equipped for operating the grid in a digital age. From hiring senior analysts in cybersecurity risk, and AI engineers, to appointing a head of data and AI within our technology services, we are building a future-ready EirGrid by growing and developing our capabilities.

In conclusion, the growth of the digital economy is central to Government policy and ambition, as outlined in the LEAP strategy. EirGrid continues to work with colleagues in the Department, the CRU, ESB Networks and industry to implement the 2025 direction. If Ireland is to meet the needs of social and economic growth and deliver on climate commitments, electricity infrastructure must be planned and delivered at scale and pace. Our group corporate strategy recognises that AI and digital tools will play an increasingly important part in the delivery of Government policy. Now, we are firmly in the implementation phase. Over 90% of EirGrid staff are using approved AI tools to assist them in their daily work. EirGrid is already piloting AI tools to assist us with the programme of work that we are undertaking with our project delivery partners to strengthen Ireland's power system. We are investing in our workforce at pace, growing it to 2,000 people by 2030. AI will not replace our people; it will support them in helping to deliver the transition to a renewable-led future for the benefit of Ireland's economy and society. My colleagues and I are happy to answer any questions the committee may have.

Gabhaim míle buíochas le Mr. Close. I now invite Mr. Jim Gannon, commissioner, to deliver his opening statement on behalf of the CRU.

Mr. Jim Gannon

I thank the Cathaoirleach, Deputies and Senators for the invitation to appear before the committee. As this is the first occasion on which the CRU has appeared before this committee, I would like to express our appreciation for the opportunity to engage with members on the important topic of artificial intelligence and its implications for the sectors we regulate.

The CRU is Ireland's independent regulator for energy, energy safety and water services. Our role is to protect the public interest by ensuring that essential utility services are delivered safely, securely, sustainably and in the interests of consumers. As the regulator of sectors that underpin homes, businesses and critical national infrastructure, our work has a direct impact on citizens and the wider economy.

Technological innovation is transforming the energy and utility sectors at an unprecedented pace. Digitalisation, advanced analytics and artificial intelligence are increasingly being deployed across networks, infrastructure management, customer services and system operation. These developments present significant opportunities to improve efficiency, support the energy transition, enhance security of supply and deliver better outcomes for consumers.

At the same time, the adoption of AI and related technologies raises important questions around governance, transparency, accountability, cybersecurity, resilience and consumer protection. While the role of the CRU is not currently fully defined in relation to AI regulation, we have a strong interest in understanding how these technologies are being deployed within the sectors we oversee and in ensuring that innovation is implemented in a manner that supports safe, secure and reliable services.

As Ireland continues its transition to a more digital and decarbonised economy, it will be important that innovation is accompanied by robust governance and effective oversight. The CRU looks forward to contributing to this discussion and to sharing our perspectives on the opportunities and challenges that AI presents for regulated utility sectors.

AI presents significant opportunities for economic growth, innovation and productivity. However, it also raises important questions about the infrastructure required to support it, particularly in relation to electricity and gas demand and the development of data centres. Data centres already represent a significant and growing component of Ireland's electricity system. Their share of national electricity consumption has increased from approximately 5% in 2015 to around 23% in 2025. Looking ahead, EirGrid's most recent resource adequacy assessment projects that, under its median demand scenario, data centres and other new technology loads could account for approximately 35% of Ireland's electricity requirement by 2035, based on existing connection agreements and contracted demand.

To understand the implications of this growth, it is useful to briefly outline how the electricity system operates. Ireland's power system is managed by two system operators. EirGrid is responsible for the operation of the high-voltage transmission network and maintaining real-time balance between electricity supply and demand, while ESB Networks operates the distribution network serving homes and most businesses. Large energy users, including many data centres, may connect at either transmission or distribution level, depending on their scale and technical requirements. The CRU's role is to regulate these networks and the market framework within which they operate.

The growth in data centre demand presents several key challenges for the electricity system. These include maintaining security of supply, managing network constraints, delivering infrastructure at sufficient pace, safeguarding affordability for consumers, and ensuring continued progress towards Ireland's decarbonisation objectives. While these challenges are not unique to data centres, they are particularly acute because of the scale, concentration and continuous demand profile associated with such facilities. These challenges are further tested where the delivery of the infrastructure required to facilitate data centre growth across networks, generation and storage technologies, typically takes longer than for the data centres themselves. In response to these challenges, the CRU has developed a regulatory framework designed to ensure that new large energy users can connect to the electricity system without compromising security of supply and through alignment with broader public policy objectives.

In 2021, the CRU directed EirGrid to assess data centre connection applications against a range of criteria, including location, demand flexibility and the ability to provide on-site generation or storage. Building on this approach, the CRU published its large energy users connection policy in December 2025. This policy establishes a structured framework for assessing new data centres. Its objectives are to address system constraints and security of supply risks, support renewable energy objectives, minimise impacts on carbon emissions and provide greater certainty for investment decisions. The policy requires qualifying facilities to contribute generation and-or storage capacity and to support the integration of renewable energy on to the system. The committee's focus on artificial intelligence is particularly relevant in this context. AI-focused data centres are not fundamentally different from traditional data centres, but they are significantly more energy intensive.

According to the International Energy Agency, while conventional data centres often require between 10 MW and 25 MW of power, large AI-focused facilities can exceed 100 MW in demand, with annual electricity consumption comparable to that of around 100,000 households. As AI models continue to grow in complexity and scale, the electricity requirements of supporting infrastructure are expected to increase correspondingly. This is not solely an Irish phenomenon. Across Europe, North America and Asia, governments and regulators are grappling with the energy implications of rapid growth in AI and digital services. Global investment in data centre capacity is accelerating, driven largely by AI adoption, and many jurisdictions face similar challenges in balancing economic opportunity with energy security, network capacity and climate objectives.

In Ireland, the regulatory framework sits within a wider Government policy context. The Government's large energy user action plan, which was published in January, sets out a strategic approach to the development of energy-intensive sectors, including data centres. It seeks to align electricity demand with renewable energy development, support balanced regional growth, co-ordinate infrastructure planning, and protect security of supply and affordability.

The CRU recognises the important role that digital infrastructure, including AI-related investment, can play in Ireland's future economy. However, future growth must be delivered in a way that maintains the security and resilience of the electricity system, supports Ireland's climate ambitions, reflects the capabilities and constraints of the electricity network and protects the interests of consumers.

The CRU's remit is expanding in relation to developments in artificial intelligence. Under the EU AI Act, the CRU is expected to assume responsibilities for the oversight of certain high-risk AI systems deployed within the energy and water sectors. This is in addition to our existing regulatory responsibilities in relation to energy security, resilience and customer protection. In addition, the CRU has recently been designated as a competent authority under the network and information security, NIS, 2 framework, adding to our existing role in supporting the security and resilience of critical infrastructure as digital technologies become increasingly embedded across the sectors we regulate.

The CRU would also like to draw the committee's attention to a number of recent publications and decisions that are relevant to today's discussion and that provide further detail on how Ireland's regulatory framework is responding to growing electricity demand, digitalisation and the energy implications of large energy users. These are: the large energy users connection policy, which establishes the framework for assessing new large-demand customers, including data centres, while protecting security of supply and supporting decarbonisation objectives; the price review, PR, 6, which sets the revenues and investment framework for electricity and gas network operators to support the significant infrastructure development required to deliver Ireland's energy transition; the fault ride through decision, which strengthens the resilience and stability of the electricity system by setting technical requirements for large-demand facilities connected to the transmission and distribution networks; the interruptible gas connections consultation, which examines proposals to provide certain future large gas connections, on an interruptible basis, to help protect security of supply, support electricity system resilience and manage future demand on the gas network while safeguarding supplies to priority customers; and the electricity network tariff review project, which examines how network charges can evolve to support changing patterns of electricity demand, network usage and the transition to a more decarbonised energy system.

Copies of these publications, together with website links and the relevant consultation documents, can be provided to the committee for reference. We look forward to assisting the committee in its examination of these issues and will be pleased to answer any questions.

I invite members to ask questions according to the speaking rota. Members will have seven minutes each in the first round, and we will see how long we have for the second round. I remind members that the seven minutes are for questions and answers.

I thank all of the witnesses for being here and for the work they are doing to build the grid. It is critical to the economy and to wider society. I am slightly late because the climate Commissioner is before the environment committee. In an interesting response to a question, he said of ensuring Europe's climate resilience and having a sufficient level of energy that, unfortunately, the permitting process often took longer than the infrastructure it was necessary to build. He made that statement particularly with regard to offshore wind. Given the witnesses' experience, and all are welcome to share their views, do they believe that permitting, licensing or planning procedures take too long or are taking longer than the construction of the grid?

Mr. Jim Gannon

I will pass that to my colleague Dr. Hemmingway, who is director of decarbonisation.

Dr. Phil Hemmingway

This matter has received quite a bit of attention from the European Commission. Through the renewable energy directive, RED, III there is a significant piece of focused work on accelerating permitting. For our part, our onshore connections policy process has been fully reformed to line up with the RED III requirements. It has been rearranged so that it works more in sync with the planning. It is essentially faster. It is an acknowledged issue for permitting and efforts are being made to address it.

Regardless of digital infrastructure or anything else, we are going to need an abundance of energy, and we need it now. There is a frustration about us being able to generate that because of the planning process. We are not going to meet our 2030 offshore wind targets. It is fair to say that we need to expedite a lot of the planning decisions to get that abundance of energy.

Dr. Phil Hemmingway

I cannot speak to planning, but grid connections are also an important part that we working to make sure we can facilitate in a timely fashion.

A lot of the focus in this committee has been on the role of digital infrastructure, particularly data centres. I am conscious that Mr. Gannon made reference to it. When he appeared before the energy and climate committee in May, I asked if it was correct to say that data centres were not a cause of higher electricity prices. Mr. Gannon stated that there was no evidence to show that. From his experience, the evidence was that data centres were a draw on the grid, but they also made a significant contribution. We are talking about this in the context of the impact of AI and its use. Will he talk about that and where he sees data centres contributing to the grid? Do they contribute towards costs?

Mr. Jim Gannon

Any demand consumer connected to the network contributes to network costs and investment requirements, from households through to small and medium-sized businesses and extra-large energy users. It is worthwhile reflecting on PR6, which is the current network investment programme for the coming five years. I will pass to Mr. McEvoy to reflect on that and on some of the allocations between extra-large energy users and smaller energy users.

The second matter I would draw the Deputy's attention to is the fact that, last Thursday, we published our second paper on the electricity network tariff review project. This looks specifically at how costs are borne and driven by electricity consumers on the network side in particular and, separately, how costs will and should be allocated after this review has been completed. It is across a number of different critical principles, including promoting cost-efficient use of the electricity network in the context of electrification and decarbonisation. The five key principles are cost reflectivity, meaning people are charged for their use, cost recovery, non-discrimination, clarity and practicality.

It is worth occasionally reflecting on some of the trends that we have seen in costs to energy users. Mr. McEvoy can correct me if I am wrong, but I believe I am correct in saying that there has been an increase in network tariffs to users between approximately 2020 and 2026 and that, while the network charge increases experienced by extra-large energy users have been in the order of 175% during that period, the increase in network charges to domestic users has been in the order of 45%.

In terms of our reporting, it is important that it always be evidence-based. It is critical that we work and reflect on that evidence. I am not doubting the costs involved but there has been a lot of misinformation spread around those issues and it is important to put that on record.

Mr. Jim Gannon

I have one final thing before Mr. McEvoy steps in. We have been asked a series of questions by the other committee. These are on the cost allocation and revenue recovery from different network users and demand customers. We are pretty much there with that response. If this committee was interested in that response to those queries, we would be happy to share it here, as it provides that fact-based response to some of those queries.

Mr. Conor McEvoy

I might just give a bit of context for PR6. It is an enormous investment but there is not one single driver of costs. Demand is one driver but we have the renewables and decarbonisation, the resilient network and offshore energy, which all contribute to that €8.9 billion allowance we have for PR6. When you look at some of the capital driven by broad increases in demand, data centres are one contributor but there is also housing, electric vehicles, EVs, and heat pumps. The infrastructure built on the network is to accommodate all users. One piece of infrastructure can serve several users and can also accommodate several different drivers.

For context and background, some of that load-related expenditure is about 40% of the total costs or allowances, but that is about 6% of the annual cost because that capital expenditure is spread over 45 years. It is important to understand the effect that some of this capital expenditure and investment has on an annual basis on consumers.

I thank our witnesses for being here. I have a few questions, primarily for the commissioner and his team. Hopefully, I will get to the rest in the second round. A lot of the debate we have been having in these committees is really about the balance. Do we have a good sense of the cost of AI versus the benefit of AI? That is what I am trying to drill into. There is nowhere that is more starkly clear than the environment and the resources that are being used. Even the headlines we are seeing today about the books of OpenAI before it goes public could not make it starker in my mind.

Specifically for the commission, it recently warned that data centre expansion would make it hard to source enough gas to meet national demand during extreme cold events. It has been reported that there are plans to offer data centres a discount on gas in return for the understanding that they might face planned disruption and have to rely, most likely, on diesel. When it comes to energy security, decarbonising and protecting our energy system, it looks like regulators are having to bend over backwards to facilitate data centre expansion when it is clear that we are at capacity. Why is the policy response to offer discounts to solve this problem and not simply to limit data centre expansion?

Mr. Jim Gannon

I believe that is a question on the interruptible gas contracts consultation. It is still under way, the responses are still being considered and we have not made a decision on that yet.

The consultation was built around dialogue with Gas Networks Ireland. We looked at future gas consumption and how we could protect security of supply in the future as different types of loads grew, particularly data centre loads. One of the solutions being examined was interruptible gas contracts. Those are contracts that would be offered to large energy users, in particular, but within that contract, they would be at different stages interrupted, perhaps not entirely, but as an element of their demand to ensure that the actual demand would stay within reasonable limits and we would not breach safe standards.

I am sorry to cut across Mr. Gannon, and I appreciate the detail on that particular element. I am asking whether as part of the consultation and deliberation process that the CRU is in, a limit or cap on data centre expansion one of the options available.

Mr. Jim Gannon

It is not a limit or cap on data centre development. That is not within our bailiwick. However, the connection policy, as in, how an applicant is treated if they get a connection offer, is.

That is what I am looking to see. How much is the CRU, as the regulator, being facilitated in respect of the options available? It seems that the possibility of limiting data centre expansion would be a smart option to at least have on the table.

I will move to the next area, which is around national electricity consumption. Data centres accounted for 5% in 2015 and that was up to approximately 23% in 2025. Their consumption is expected to rise to 35% by 2035. It seems unlikely that we will be able to guarantee that 35% of our grid as constant demand without subjecting everyone else, as consumers, to blackouts and brownouts. I understand that the witnesses are all in difficult positions. They are beholden to Government policy and are not necessarily allowed to criticise it. However, I need to call out an elephant in the room. Our climate commitments are not compatible with the level of data centre expansion taking place. Can the witnesses explain how discounts on gas, with the expectation that data centres run on diesel during planned interruptions, fit with the policy objectives mentioned in the opening statement of supporting renewable energy objectives and minimising impacts on carbon emissions?

Mr. Jim Gannon

On the topic of discounts, there is no discount being offered on the price of gas as the commodity. What is being considered is that if a gas connection is interrupted, there would be a reduction in the transmission of distribution network tariff should the interruption happen at the site. There is not a discount on gas the commodity that would affect gas prices.

Separately, as these facilities are interrupted, it is not necessarily the case that they would resort to their own backup generation or otherwise on their sites. They should manage that themselves. It is not for us to determine how they would do that.

In his opening statement, Mr. Gannon spoke about supporting renewable energy objectives and minimising impacts on carbon emissions. How is this compatible?

Mr. Jim Gannon

I will pass to Dr. Hemmingway to talk about the large energy user decision paper.

Dr. Phil Hemmingway

The reference in the opening statement relates to the large energy user connection policy, which policy is applicable to electricity network rather than the gas network. We are talking about two separate policies. Within that policy, there is a requirement that data centres would match a minimum of 80% of their demand on an annual basis with the provision of new, additional renewables projects developed in Ireland.

Dr. Hemmingway has explained the detail. These companies will ultimately be paying less for gas. Is that correct?

Mr. Jim Gannon: No. It is not proposed that they would pay less for gas. It is being considered that they may pay less for the connection or for the network tariff being imposed on them should interruptions happen.

Do the witnesses have anything to say about the compatibility of that with the European policies around the reduction in carbon emissions and renewable energy?

Mr. Jim Gannon

We continue to operate in alignment with the climate Act.

I have a governance question around the CRU's role as a market surveillance authority. Mr. Gannon said in his opening statement that the CRU is not currently fully defined in relation to AI regulation but it is a market surveillance authority under the AI Act. What guidance and support has the CRU received from the AI office to enable it and other market surveillance authorities to effectively enforce the EU AI Act?

Mr. Jim Gannon

I am going to pass to my colleague, Mr. Rory Mee, who leads on the AI Act and our preparation for same.

Mr. Rory Mee

I thank the Deputy for the question. For context, the legislation was enacted in July this year. We have had a number of consultations with the AI office and other market surveillance authorities.

In terms of our remit, it is developing. We need to understand the full remit of that legislation, what it means for us and how we look at governance and the management of AI use, specifically for safety components within licensed entities. That is an evolving piece of work at the moment. It is something we are very closely with our colleagues in EirGrid, ESBN and others.

Is the CRU connecting with the other market surveillance authorities?

Mr. Rory Mee

That is a work in progress.

I thank the witnesses for their opening statements and for coming before us today. The CRU mentioned protecting security of supply in the opening statement, but this question might go to everybody. I am from County Mayo, so security of supply is an issue for us, even without a data centre at the moment. There was recently a refusal on a data centre in Killala. This morning we have only a yellow weather warning in Mayo, and I already have 594 constituents without power, one being my administrative assistant, which is not helpful. In light of that, what do we need to do to protect security of supply as well as make the advancements that we need? The need to scale up over the next five years was spoken about, but witnesses who were before us last week were talking about a moratorium for five years, but the demand for AI is growing, people are using it anyway and perhaps the demand will go elsewhere. Therefore, I am not sure if that is a particular option. I am throwing the idea of the security of power out, as well as the idea of the moratorium, to get the witnesses' views. I do not know who wants to come on in that. I know the CRU started with the security of supply.

Mr. Jim Gannon

Without throwing our regulated colleagues under any bus, the answer should cover the all-island resource adequacy assessment, which covers the next ten years worth of the demand-supply profile. Perhaps we could speak about network resilience as well.

I have talked about the 594 constituents without power, but we have big pharmaceutical companies in Mayo. I was in IBEC in Galway a couple of weeks ago, where we also talked about the issue; as they automate things and more AI is coming in, more and more of their lines are being automated. As a domestic user, I might not notice a blip of two or three seconds, but they might lose thousands and thousands of euro and have to restart a whole line. It is about looking at it in those two ways, namely, supply to domestic users and large factories.

Mr. Errol Close

In terms of the investments, I mentioned in my opening statement that there was significant investment in the network itself. That is a central part of system resilience and network resilience. Under price review, PR, 6, Mr. McEvoy mentioned the €18.9 billion of investment going in across both the electricity transmission and distribution system. From a transmission perspective, that is the backbone network. It is the overall motorways that deliver the high-quality power around the system. We have 381 transmission projects that are progressing through the next five-year period in PR6, 29 of which are significant priority projects. We are making good progress with that already. It was mentioned earlier about planning the critical entities, such as the accelerating infrastructure task force. The Critical Infrastructure Act has been supportive in getting projects through the planning process already. We are seeing good progress on that programme. As we roll out that network, that will add to system resilience overall. It also opens up that more balanced regional development.

The Deputy was talking about supports for further investment in the regions around the country. That is what the large energy users action plan the Government is bringing through is focused on. It deals with how we create these regional green energy parks around the country that could support the investment in the economic development, as well as bringing in the renewable resource, a conventional dispatchable resource of generation to support that in the regions themselves. That is from a network resilience perspective.

The other part of that is from a generation adequacy perspective. I might hand over to my colleague, Dr. Ryan, on that.

Dr. Liam Ryan

In relation to the adequacy, we look at it on a ten-year time horizon. We look to see what amount of demand is going to come onto the system. That is looking at economic growth, domestic growth and the utilisation of large energy users and other members that we have to meet our demand. We then look at the amount of generation that we currently have on the system, and the state of that generation with respect of age and when it will potentially retire off the system. On a yearly basis, we then look at whether new generation is needed on the island to meet the demands, which are forecast. As part of that forecasting, we engage with ESB Networks, the ESRI and various other Departments and parties across the ecosystem to make sure that our forecasting is as accurate as it possibly could be.

In relation to security of supply and the quality to all users, we are conscious that all our users, whether they are domestic or industrial, have a quality of supply that they need to meet their needs. From a system operator perspective, we have been on a trajectory over the past ten years to make sure that we are managing the transition from the conventional generators we would have had on the system a number of years ago to now being a more renewable and sustainable type of energy, but we need to make sure that energy, as it is being brought forward, is meeting the needs of our customers. Therefore, we have, under the DS3 programme, which has now evolved into shaping our electricity future, has been focused on that transition to quality while we are ensuring that we meet the needs for security of supply and the transition into more sustainable renewable generation as well.

Mr. Nicholas Tarrant

I will add a little bit around network resilience. I refer to the overall PR6 programme of €13 billion, which we have spoken about. There has been some discussion this morning about increasing the capacity of the network to be able to take increased demand, but network resilience is an important component of the PR6 investment plan as well, including a doubling of the investment compared to the previous price review period. This includes things like replacing and upgrading substations, overhead lines, underground cables and that type of equipment.

PR6 also provides for an increase in our vegetation management, including things such as cutting back trees. At this stage, I think we have over 450 people and contract partners throughout the country working on that. I will make some comments on the aftermath of Storm Éowyn. Customers faced huge devastation in its aftermath. A winter plan was requested by the Government in the aftermath of the storm, and we have put in targeted measures over the course of last winter continuing to this one. It is likely that this will continue into this winter as well. We have also been working with our own Department, which is bring forward heads of Bills to do with forestry corridors and putting them on a statutory footing. That is an important piece of work because the work required for us in storm situations to carry out repairs in forestry is an area that needs to be addressed through legislation to give us the powers to be able to restore customers faster in the event of these severe weather events.

I thank the witnesses for coming before us. I will start with the CRU and pricing. Does the regulator think it is fair that ordinary households pay almost twice as much per unit of electricity as data centres pay, considering the cost-of-living pressures facing households while a lot of these data centres are owned by some of the richest companies in the world?

Mr. Jim Gannon

In terms of the electricity commodity itself, we are in a liberalised market, which is regulated, but it is liberalised in line with EU law. Larger energy users have the ability to engage in direct negotiations with suppliers, whereas that is not the case for residential consumers, who tend to operate in the market. That is why we continue to encourage people to switch and to keep competition alive. We produced the first phase of a review of competition of the electricity market earlier this year. We are happy to either engage with or circulate it again to this committee, because we would have had an engagement with our other committee. We are now engaged in the second half of that, which will include a public consultation and direct dialogue with consumers.

It is another argument against the liberalised electricity market, if we needed it. I will explore the question of whether householders are paying more for electricity as a consequence of data centres. As I understood it, the question put by Deputy Byrne seemed to imply that the answer was "No", but I understood the answer to mean "Yes", that every additional user is adding to the network costs, and those costs are then spread out. Could Mr. Gannon go into that in terms of the network charges issue?

Mr. Jim Gannon

It is important to separate the electricity unit itself, which was in the first question, and the network cost. To delve into that in a little more detail, I will pass to my colleague, Mr. McEvoy.

Mr. Conor McEvoy

I will start with distribution and transmission. Many of these large customers are directly connected to the transmission system. They pick up the transmission costs because they are not utilising the distribution system. We have a very large distribution system with customers, such as domestic customers, who have low voltage, LV, medium voltage, MV, and high voltage, HV, on the distribution side while also utilising some of the transmission side. They would pick up an element of that cost. The tariffs are calculated. There are a number of different tariffs, which include components such as an energy standing charge and a capacity charge. Customers' use of the network and those drivers works out to the tariff they pay.

Approximately 51% of costs are picked up by domestic or small non-domestic customers. Approximately 27% are picked up by large customers in the large group of transmission, which aligns broadly with demand. The network tariff review is fundamental to understanding and unpicking how the system changes and the drivers, etc., of these costs.

I would argue, and many academics suggest, that there are two ways in which customers, householders, pay higher prices. One is by picking up some of the tab for the increased network charges. That is buried in consumers' bills. We are dealing with that there.

The second issue I would like to explore is the subject of the paper by Dr. Seán Fearon. By having all this extra demand on our grid, we are pushed up the merit order curve. Instead of using the cheapest electricity, which is generally renewable, we are pushed into using gas at times when we would otherwise not be pushed into using it. That then sets the price at that moment. If you were buying electricity at that moment, that would be the price you would pay for all of it, regardless of whether the source is renewables or gas or whatever else. There is a report by Dr. Seán Fearon, commissioned by Friends of the Earth, which states that householders have paid hundreds of euro each in extra costs over the past few years as a consequence of this massive extra demand on the grid from data centres. That has pushed us up the merit order curve. Do the witnesses agree with that analysis or do they dispute it in the context of the issue about the merit order curve and the impact on pricing?

Mr. Jim Gannon

I am not familiar with the analysis. I will look at it. I will come to the other part of the question about the merit order. It is important, just to reinforce what Mr. McEvoy said, that in terms of network charges right now, the larger energy users pay approximately 27% and residential and smaller users pay approximately 51%. That is commensurate with or close to the actual demand or use they place on the network. Notwithstanding that, our network tariff review is going to look at not just today but also the future and how we can maintain cost reflectivity.

The second piece is to repeat briefly something I said earlier. Between 2020 and 2026, extra large energy users experienced an increase in network charges of approximately 175%, while domestic consumers experienced an increase of approximately 45%.

On demand and the influence it has on the wholesale market, it is correct to say that as we require additional generation units in periods of high demand, at peak, particularly, we tend to seek the less efficient generators. They start coming into the merit order because we need them there. It is also the case that the economic signal being sent retains them. It is possible that without some of the demand we are seeing, and we are seeing increases in demand, not just from data centres, although they represent the largest demand over the last period of time, with decarbonisation, electric heating, electric vehicles and the changes and challenges there, we will need those units into the future.

It is also worth reflecting that notwithstanding that, a lot of the focus in our investment and our dialogue with ESB Networks and EirGrid more recently has been around flexibility. We have put in place a national energy demand strategy across a number of stakeholders in an effort to match more closely our renewable resources to our demand profile, reducing the need to use-----

I will come in before I am out of time. Mr. Gannon is saying he is not aware of this Dr. Seán Fearon Friends of the Earth report. This is the first he is hearing about it.

Mr. Jim Gannon

No. I apologise. I am aware of Friends of the Earth reports. In the detail the Deputy has gone into, I am not aware.

I do not have that to hand or in my mind. That-----

Finally, on the gas-----

We are out of time. The Deputy will have to come back.

The CRU was quoted in The Irish Times as saying that a tariff discount on gas would be applied.

Mr. Gannon is saying that is inaccurate. There is no tariff discount on gas.

Deputy Murphy will have to come back in on the next round.

Mr. Jim Gannon

It is the difference between a discount on the unit of gas itself, the commodity, and a reduction in the network tariff element commensurate with an interruption. It is just that network tariff piece.

We have to move on. I call Deputy Mythen.

I thank the witnesses for coming this morning. How many data centres are in operation in Ireland?

Is the question directed to EirGrid?

Mr. Errol Close

I can answer part of the question if that is helpful. I can talk from a transmission perspective. There are two different system operators here. As the transmission system operator, we operate the higher voltage network and ESB Networks is the distribution system operator that operates the lower voltages in the network. Data centres can connect to each one. I can talk about the ones that come directly connected to the transmission network-----

We do not know how many data centres there are in Ireland.

Mr. Errol Close

When we put them together, we will be able to answer the question in totality. From a transmission perspective, we have 17 parties that are contracted to connect to the transmission network. Of those, 14 are actually connected and three have yet to connect. From a transmission perspective, we have 14 actually connected and three more are contracted to come along but have not yet connected to the transmission system.

Mr. Nicholas Tarrant

I can speak about the distribution network. On the distribution level, currently 33 data centres are connected, which is equivalent to approximately 427 MVA of connected capacity and there is a further 10 MVA of contracted capacity.

How can a balance be struck between the data centres' use of capacity of energy, and society's needs for water and energy to houses? That is a question for all.

Mr. Nicholas Tarrant

I am happy to come in on this question. We have a responsibility under our licence which is set by CRU to be non-discriminatory in the way we process applications of any type of customer onto the electricity network. That applies at distribution level and it is similar at transmission level. In parallel with that, we follow CRU directions. In November 2021, CRU provided us and EirGrid with connection rules to data centres. Our responsibility is to implement those rules. They have since been updated with the December 2025 decision as to how data centre connection applications are processed, which we are now operating jointly with EirGrid.

How does CRU balance attracting investment with protecting consumers from increasing energy costs? What safeguards exist to ensure households are not indirectly subsidising major AI operators? For instance, with some of the contracts for the data centres the public basically take up all the risks if anything happens.

Mr. Jim Gannon

My colleague Dr. Phil Hemmingway spoke about the large energy users connections policy earlier. Separately, I bring us back to some of the network tariff costs in particular. Data centres or any large connection user will pay for direct connection to the network. In terms of the deeper reinforcements on the network, these are picked up by the network tariffs and the network tariffs-----

Has CRU looked at the contracts?

Mr. Jim Gannon

In terms of-----

In terms of the risks to the public.

Mr. Jim Gannon

In terms of the contracts between the data centre operators and their suppliers of electricity, that is not something we would look into. In terms of the connection-----

Is Mr Gannon saying that is something CRU would not look into?

Mr. Jim Gannon

No. We ensure a competitive market but we do not look expressly at the confidential and commercially sensitive contracts between the data centre operator and its energy supplier.

Does CRU not have a responsibility to protect the public?

Mr. Jim Gannon

In-----

In the fact the public is taking a high risk. If anything goes wrong or if future demand does not-----

Mr. Jim Gannon

The Deputy might be referring more to the connection contract, if I can put it that way, with the system operators. With regard to connection contracts, data centre operators are given an offer and complete an application with the system operators. With regard to the allocation of costs, as I described in an earlier response on residential users and extra-large energy users, that element of network tariffs, rather than the connection offer aspect, is currently under review. We published a consultation document on that just last week. The review will look at the cost drivers, the segments they come from and how we can ensure cost-reflective allocation to different consumers.

Is there a risk that strategic national infrastructure will be disproportionately shaped by the growth of AI and data centres?

Mr. Errol Close

EirGrid has the role of planning the future of the electricity system but also forecasting what demand will look like. We are also to signpost what is required from a generation perspective. From the licence perspective, we have to look at all forms of demand. That is whatever comes through in Government policy, whether in housing, transport or the general electrification of demand as part of our decarbonisation agenda. We also consider the digital economy and other parts of the economy, including semiconductors and life sciences, which are also key parts of Government policy. We look at all of those in the round and seek to make sure the infrastructure we put in place will meet all of those demands. I will hand over to my colleague, Dr. Ryan, to elaborate on that.

Dr. Liam Ryan

As my colleague said, we look at all of the demand. We then look at the regionalisation of that demand. We look at where demand is growing. We work very closely with ESB Networks, as the operator of the distribution system, and with large energy users that are connected to the transmission system. Through each price control, we make a submission to the CRU to allow for the infrastructure we need to meet the demands over that time horizon. In addition, as my colleague said, we are also looking at the generation portfolio and where that generation connects to the system. The main part of the generation connecting at the moment is renewable generation, both solar and wind. We are very conscious of ensuring they connect to the system in a timely manner to help us through that transition to a more sustainable power system in the future.

My first question is for EirGrid. How much grid capacity reserved for data centres remains unused? Is there such a thing? I refer to contracted future energy.

Mr. Errol Close

In total, from an overall transmission perspective, we have around 1 GW connected today. The overall contracted level in respect of data centres is around 2 GW. There are processes whereby people can connect and have what are called "ramp rates" within their connection agreements, which allow them to grow over time.

Is there actual energy there that is not being used? Is there energy that has been contracted or reserved for data centres but is not being used at the moment?

Mr. Errol Close

There would be energy contracted but that has not been released yet because they have to grow. That is the first piece.

They have to go for the ramp system.

Mr. Errol Close

When any demand customer is connecting, the contract will specify a maximum import capacity. That is the maximum the customer is allowed to import at any given point in time. Customers can vary their demand within that. Any type of industrial facility might go up to that capacity when their production is at the maximum but it could also reduce. Customers are allowed that flexibility. Data centres are the same. Their demand would be much more of a flat line when compared to some of the industrial sectors but they could be within or under the maximum import capacity they have contracted for.

That is fine. I thank Mr. Close. My next question is for ESB Networks. Are there examples of data centre demand competing with new housing development? Is ESB Networks aware of any competing interests between new housing developments and data centres throughout the country?

Mr. Nicholas Tarrant

Looking at the overall situation in respect of data centres, which has just been outlined, a significant proportion are connected at transmission level and down to the distribution level.

We continue to work with EirGrid on available transmission capacity to ensure that we at distribution level can continue to make connection offers for housing and other customers. Earlier, the electrification of heat and transport was mentioned, as was the critical issue of housing. If one looks at the overall housing numbers, the housing numbers continue to go up. This year to the end of August, we are up approximately 9% year on year and we are expecting a busy finish to this year. If one looks towards the future and the next number of years, we have to continue to invest. That is the crucial thing. For the plans we have outlined in PR6, both for transmission and distribution, it is important that investment happen and that we can accelerate it so that we can meet the Government's targets across all of these policy areas, including housing.

Has EirGrid or ESB Networks seen any instances or examples where the connection of new housing developments, particularly housing estates, have been slowed or have taken longer because of demand from data centres?

Mr. Nicholas Tarrant

I do not think there is a specific example we have had where it directly links to data centres. If you look at the greater Dublin area where there is the biggest concentration of data centres, we continue to connect large numbers of new homes, particularly in north and west Dublin. I will ask Mr. Rossiter to speak to that. It continues to be probably the busiest area in the country when it comes to new homes. There can be individual issues that come up in new housing developments for various reasons. However, the overall picture is that we are continuing to connect houses. We are focused on that work because it is important from a policy point of view, and we will continue that over the years ahead.

Mr. Alan Rossiter

I will touch on the north Dublin area, which from an ESB perspective covers north and west Dublin. It is by far the busiest area in the country for connections. That is not just housing, but commercial and industrial connections as well, including several transport projects and the airport. Approximately 25% of all of our connections and capacity happen in that area. For context on housing, housing connections in north Dublin are up roughly 25% in 2026 to the end of August versus 2025. It is continuing to accelerate in that area, notwithstanding that it is challenging, given the scale of demand focused in a small geographical area. We have a lot of plans in PR6. We have brought forward something called an accelerated capacity programme, which is looking at and meeting developers and individual companies to try to get ahead of their needs and bring capacity in those areas.

In my constituency, Kildare North, there is huge growth, so I have seen it first hand. The important thing from what the witnesses have said is that housing developments have not been stymied due to connections for data centres.

I turn to the CRU, particularly in relation to LEAP. What strikes me as a member of the climate, environment and energy committee, where I have come across the witnesses on numerous occasions, is the 80% renewable rate for data centres. What happens if a data centre does not deliver the promised renewable power within its energy mix?

Dr. Phil Hemmingway

In the policy, we have asked for EirGrid and ESB Networks to make those commitments contractual. If a data centre did not achieve 80%, the system operators would have the ability to reduce the demand that the data centre is allowed to use so that it does match that 80%.

Those guarantees would be embedded within the connection agreements. That is fine.

I have a question for EirGrid. The Shannon Estuary economic task force identified the potential to develop an initial 2 GW of floating offshore wind off the west coast, rising to more than 30 GW by 2050. It also specifically identified the importance of the existing transmission infrastructure at Moneypoint and Tarbert on either side of the Shannon Estuary. What preparations are currently being made to substantially increase transmission capacity at Moneypoint and Tarbert so that these locations can receive electricity from future floating offshore wind farms off the west coast?

Dr. Liam Ryan

At the moment, we are in the process of doing a long-term strategic plan on how the current committed offshore is going to connect, which is the south coast designated maritime area plan, DMAP, region, in addition to those on the west of Ireland.

We are taking a long-term strategic view as to how that would actually connect. That would mean utilising the existing grid, which is the 400 kV grid connecting Moneypoint to Dublin. It also ties into Government policy around LEAP, particularly how we co-locate and plan the development of both demand and generation so that we minimise the amount of grid that we need to build and maximise the utilisation of the potential of what we have.

I know that there are some time horizons where floating wind will come because that is on a slightly longer time trajectory than fixed-bottom offshore wind. There is also the potential for onshore wind. It is about how we are looking at the time horizon, but we are planning and we have a long-term strategic plan about how we could utilise that when it comes.

I thank Dr. Ryan. We have time for a second round. Five minutes per member should be enough. First up on the rota is Deputy Malcolm Byrne.

In terms of each of the witnesses' organisations' use of artificial intelligence, I am particularly thinking of the future context of the use of AI and quantum computing, which I can see in the future, and projecting energy use, managing energy and predictions. Will each of the organisations answer that?

Mr. Mark Dineen

I am happy to start from the EirGrid perspective. We have been using AI for quite some time now within EirGrid. The key thing is that it is well governed. We have been complying with the EU AI Act for over a year now in terms of what we are doing and making sure that the use is governed, has human oversight and is transparent and there is business value coming from it. In terms of our day to day use, we can see wave 1 occurring within the productivity space, particularly in knowledge-based organisations. It is no different from most other organisations that are there. Currently, nearly 90% of our organisation uses those tools on a day to day basis and get value from it.

That is great but in our specific business, we are seeing huge potential for the future. This is reflected in work we are doing across Europe with the European Network of Transmission System Operators for Electricity, ENTSO-E and other bodies, which is in that forecasting space. I know that the committee has already heard from Professor Andrew Parnell on things like weather forecasting. The more accurately we can forecast as a business, the better we can balance supply and demand on a daily basis. That is one thing that AI is good at, namely, pattern matching in those areas. There is a lot of forecasting, such as around reserve capacity, that we need to do. There is forecasting around renewable generation and the contingency we need to have on the grid. There is a lot of work happening in that space and we have published papers, but we are also being quite prudent in our approach. The key thing is that, at the end of the day, there is always a human in control. We view this as being very much-----

There are clear benefits in how we use it.

Mr. Mark Dineen

Yes.

Mr. Nicholas Tarrant

I might add a few comments and then ask Ms Ronayne to add a little more as regards some examples. Today, there are examples of where we are using it very effectively. On our smart metering programme, we have analysed the pictures taken at the installations to make sure that they are safe and that the quality is good. There are things like our low voltage network modelling, which is in the same family of use cases that EirGrid would have, where we look at our low voltage network to see if there are ways of optimising it. We have a trial under way about our vegetation management and looking at everything from satellites, LiDAR data, drone footage and so on and whether we can interrogate those to put better targeted measures in place to manage that programme of work.

The last matter I will address before I ask Ms Ronayne to come in has to do with Mr. Gannon's mention of flexibility. There is a lot of potential to use AI to optimise and use the network more effectively in the future, which might link to flexibility.

Ms Afra Ronayne

It is important to layer the governance structures on top of it, like Mr. Dineen said. We have an AI policy and guidelines for our users. We have also looked at the productivity side of things. We were the first company in Ireland to roll out Microsoft Copilot for our employees. There is also a big focus on AI literacy, data literacy and training across the organisation.

We are really looking at the people side of things as well as the specific use cases that I just mentioned.

What is the situation from the CRU's perspective?

Mr. Jim Gannon

We have our own AI use policy in place for a couple of years now, in line with European norms.

I would expect every State organisation to have that.

Mr. Jim Gannon

That is no problem. We then approached maintaining licences for people, so we have licences across the organisation for our staff. Separately, we have a number of advanced users in the organisation as well. We have done a couple of pilots in the organisation. We ask ourselves how best we can use AI in our role. The customer care team is where we receive complaints about regulated entities, whether they are retail suppliers or network organisations. That is one of the areas where we feel there could be significant benefit in assessing complaints that come in, and in dealing with consumers but, importantly, having that human element always in place and always supporting the ultimate response to the consumer.

Separately, we have started using Power BI a lot more with retail market monitoring. This is where we look in a lot more detail at the prices in the retail market, changes to those prices and also arrears and disconnections data. This has led to us preparing more dashboards that can be better for different constituencies. This is one area where we believe AI could also help us in terms of the data we receive from all of the suppliers in the market, and making sure we get from that the right results on things to act on. We have a couple of different use cases and we will continue to progress them.

It might be useful to inform what we do if each of the witnesses shared details of some of the use cases with the committee, and the planned use.

I want to pick up on the conversation the witnesses were having with Deputy Murphy around gas and discounts. It is important to make the point that when people get their gas bill, there is no difference to the consumer as to where that discount applies, be it the unit discount or the tariff discount. That is important to say.

I said I was coming to the other witnesses but I am going to stick with the CRU. I want to ask about some of the findings in another recent Friends of the Earth report on data centres today. Three years after the introduction of the energy efficiency directive, only 18 of Ireland's 123 data centres have reported on key sustainability metrics to the mandatory EU database, with none visible on the public-facing dashboard. A big reason we are seeing that non-compliance is that we have not yet transposed the directive or designated a national authority despite now being 11 months past the deadline. Does the CRU have any knowledge of whether these data centres are complying with the energy efficiency requirements of the directive? Are there any talks taking place between it and the Department on designating the CRU as a competent national authority under the directive?

Dr. Phil Hemmingway

I am afraid we would not have awareness in terms of compliance or non-compliance with the directive by data centres.

Is that because of the delay in the transposition of the directive?

Dr. Phil Hemmingway

We do not have a role in monitoring it, so we just would not be collecting information that would tell us whether there are compliance issues.

Does Dr. Hemmingway know who is going to be designated as the national authority?

Dr. Phil Hemmingway

I do not think we are aware of that at this point.

Has the CRU not raised it at any of the departmental meetings or with the Government?

Dr. Phil Hemmingway

I am not aware who the competent authority is likely to be. Perhaps Mr. McEvoy knows.

Mr. Conor McEvoy

There have been discussions around the transportation of the energy efficiency directive. I think there is discussion around the role of the SEAI and the CRU but, again, that has not been decided yet.

That is a little concerning because it is outside the scope of the CRU as it stands, if it has not yet been included in its remit or in that of any other body. That is pretty worrying for our energy system if nobody, neither the CRU nor anybody else, has any role in monitoring the efficiency and compliance of 23% of our energy use with the directive.

Mr. Gannon also made it clear earlier in his statement that two months after the AI Act has passed, he still does not know what his role is. I appreciate Mr. Mee's answer, in terms of ongoing discussions, but that clarity is not there. Can he explain these delays when it comes to monitoring the massive energy consumption of data centres? Is it the case that the Government is refusing to give the CRU the appropriate powers because there is clearly a problem here?

Mr. Jim Gannon

In terms of the energy efficiency directive, that would rest with the Department. As with other matters that have been added to our brief in the past, as we are designated or if we are proposed to be designated, we would then started engaging and put teams on it. That has not yet happened, however, and we do not know who will be designated for the energy efficiency directive.

I was the head of a State agency that received additional designations over the years and we discussed those internally.

Does Mr. Gannon have a position to share on whether he believes the CRU would have the appropriate statutory basis on which to adopt that as a designation? Are there comparable bodies to the CRU in other jurisdictions, which have adopted it? Why are we late? Why are we a year down the line without having a national authority on this?

Mr. Jim Gannon

I do not think I can answer the Deputy's final question on how late we are. When we interact with the Department about potential new roles it is to understand and support the development and transposition of the legislation that will provide us with the authority of the remit. The focus in the recent past has been on NIS 2 and the AI Act in particular.

Is the CRU pitching to the Department that it could be the national competent authority?

Mr. Jim Gannon

We do not pitch to the Department for additional roles or responsibilities. We are working with the resources and within the remit we have to the best of our ability, and we will continue to do so.

A review of its founding legislation can happen to any State body. That is something the CRU can do. Does it do it? Does it have a snag list of where it would like to have additional powers in order that it can better monitor energy efficiency?

Mr. Jim Gannon

We have had an ongoing dialogue with the Department about our existing remit and legislation that can be improved. There is a gas safety Bill that has been coming through the system recently. That is something within our remit where we see items that could be improved or updated over time. However, new roles for the CRU are not something we would canvas for, or otherwise.

I have three questions and five minutes but I will do my best. The use of AI is sweeping the nation. People have their digital assistant, and some people have multiple assistants on the go at the same time. The SEAI had the reduce your use campaign and the ESB had beat the peak at some point. Is it time that we started a national campaign? The ordinary person at home probably has no idea how much energy is used when they are asking ChatGPT or Gemini a simple question. That question is for EirGrid or the ESB.

Mr. Jim Gannon

I will start. It is worth drawing attention to the national energy demand strategy we put together following the Climate Action Plan 2023. That was to look at demand flexibility and demand response both at transmission scale and infrastructural investment, and down into the home using the smart meters that were in 2 million homes as of last year. A campaign on energy demand related to AI usage would not be within our remit. We are tasked with looking at the demand and at flexibility around that demand in the home-----

I am asking for something broader and more societal. It might fall under the SEAI's remit. People are getting charged a monthly rate. They often have unlimited data and no awareness. When I was growing up people had, say, 100 texts and then they would look for a top-up of credit. Now, they are asking AI assistants for help, and they have no concept of how much energy that uses. It might not be in the CRU's remit, but everybody here has more knowledge of this than the ordinary person at home. Is it time for a national strategy to educate citizens on how much energy the general chit-chat we have with ChatGPT, Gemini or Copilot is using?

Mr. Jim Gannon

I cannot see that it would do any harm.

Mr. Mark Dineen

We are in the early days of this technology. It is the Ford Model T era of AI. Economics will follow because it costs money. Last night I saw a large organisation that once adopted a "use as much as you want" approach. It is now starting to charge based on usage. I think that will follow over time as the technology naturally matures. The key issue, as with other technology out there, is that we use it responsibly. We govern it and we make sure it is done in a controlled way. That is governance of the use and the cost of it, and all of the other aspects.

I think we are using it first and we will become responsible afterwards.

I turn to EirGrid on the issue of forecasting the additional electricity demand that will arise specifically as a consequence of AI.

How different is the current forecast from the forecast two or three years ago given how quickly AI is scaling up? How quickly do we need to review the forecasting? Is EirGrid doing that on a constant basis?

Dr. Liam Ryan

We update our forecasts on a yearly basis. We are continuously looking at demand, where it is going to grow and what is actually happening. We are looking not only at the utilisation of AI but also the electrification of heat and transport and how quickly elements like that will arise. We are also looking at how housing is growing more quickly and at economic growth. All of those aspects are included in our model. We continuously look at and hone that model. As I said earlier, we do not see ourselves as having all of the knowledge so we reach out to other key parties across the whole ecosystem, such as the ESRI, to make sure we get the latest thinking. Our models in that space are being looked at continuously.

I might cut Dr. Ryan off so that I can get in one more question for ESB Networks. It relates to the current use of AI. To go back to Storm Éowyn, I will always be traumatised from my first few months as a Deputy. Is ESB Networks able to use AI to help it recognise faults? My knowledge of this area is not great but if one of the big pylons were to go down, it would not be known if there was a fault further on down the line until it was brought back up. Is AI going to be able to assist in fault identification?

Mr. Nicholas Tarrant

There is a cascade effect in the electricity network, particularly when you get down to the lower voltages, where there is less automation. We have increased the amount of automation on the network over the past couple of years. We are continuing to invest in that. When it comes to understanding what is happening at a customer level, the real game-changer is the data and feedback from the smart meters. Because they are in homes right across the country, whether in the west of Ireland or anywhere else, we now have more knowledge. During Storm Éowyn, we actually used smart data at an overall level to help the restoration process. That use case, coupled with AI, will help us in the future. One of the things we are looking at is seeing what we can continue to do to improve the information available on our website around restoration times and that kind of thing. We are continuing to evolve. I do not know whether Mr. Rossiter would like to say anything more.

I ask him to be very brief.

Mr. Alan Rossiter

We have rolled out a self-healing network over the last number of years. We have a large programme of such works in PR6. This identifies a fault and looks to minimise the number of customers disconnected. That is a use case where AI could really add value.

I will start with ESB Networks. I am going to ask about the substation at Castlebaggot, which cost €100 million or so. It has been reported that there was a delay in housing being made available for sale and use because a data centre connected first and effectively took up the capacity. Is that accurate?

Mr. Nicholas Tarrant

Is that a question for ESB Networks?

Mr. Nicholas Tarrant

The general question of whether data centres have impacted on our ability to connect houses has come up before. Let us look at the overall situation in north and west Dublin. Dublin has the biggest concentration of data centres at transmission level and distribution level. There are two things that come up with regard to network capacity and data centres. The first is whether there is transmission capacity available for the distribution level and the second is whether we can continue to connect houses at the distribution level. We are continuing to connect houses. We are seeing continued growth in housing in west Dublin and north Dublin. I may ask Mr. Rossiter to come back in on this question. We are seeing a big uplift in housing this year.

I am sorry but I am asking about Castlebaggot. Could I get an answer to the question?

Mr. Nicholas Tarrant

Castlebaggot is impacting on that west Dublin area. We are continuing to connect houses there at present.

Were houses delayed in being connected because of a data centre?

Mr. Nicholas Tarrant

To the best of my knowledge, no.

Mr. Alan Rossiter

I am not aware of that happening. A number of data centres were connected to our existing Inchicore bulk supply point and were subsequently transferred to Castlebaggot. This freed up capacity to enable us to continue to connect housing in that area. In PR6, there are plans for another bulk supply point, that is, an interface substation between the transmission and distribution stations. It is planned to start that under PR6 and to complete it under PR7.

Mr. Nicholas Tarrant

With regard to housing connections in general, it is important to note that there are various reasons houses may take a longer or shorter time to be connected. It may depend on the level of work required.

It is usually at distribution level. Work might be required at a local substation, such as designs needing to be done, but that is different from a transmission connected data centre, such as the one connected to Castlebaggot substation or others.

A recent article in The Irish Times stated:

The Castlebaggot 220kV substation was intended to relieve pressure on the grid and support housing and industrial growth, but officials noted the “sheer volume and energy density” of data centres in the area “completely consumed the capacity of the new reinforcement”.

Is that not accurate?

Mr. Nicholas Tarrant

I think the Deputy is referring to a presentation EirGrid gave to the Department in 2024. If that is the one the Deputy is referring to-----

The article says the Department of energy.

Mr. Nicholas Tarrant

Commenting on this might help to explain it a bit further. When the Castlebaggot substation was being developed initially, there was an intention - I was not directly involved - that it would support further development at distribution level, including housing, in that area in west Dublin. Subsequently, a large volume of large users came in to connect.

Mr. Nicholas Tarrant

Yes, data centres. However, whether that has delayed housing in west Dublin is a different question. We have continued to connect housing in west Dublin and across the Dublin area during that time. I do not know whether any colleagues from EirGrid have any comments on that because we were not involved in that meeting.

Mr. Errol Close

When we build a transmission station, it is for a number of reasons. We receive requests from ESB Networks directly as a distribution system operator. It could be for what is called a bulk supply point. ESB Networks will request a certain input capacity into the distribution system from the transmission system. That might be for housing, electrification, transport or a number of different reasons, such as smaller industrial development and other formats of use. We take all those into consideration and plan a system accordingly. Therefore, a transmission system will be there for multiple reasons. In addition, parties can apply to connect to it, along with the distribution system operator. As ESB Networks understands what the needs of its system are, we continue to respond with a bulk supply point.

To confirm, there was no delay in the connection of housing as a consequence of this.

Mr. Alan Rossiter

Not that I am aware of.

Okay. I will return to EirGrid. It said in the opening statement that applications cannot proceed in constrained areas. What are constrained areas? If I understand correctly, in the greater Dublin area 80% of our electricity is going to data centres. Is the greater Dublin area accounted as a constrained area or is it a more limited category?

Mr. Errol Close

There are a number of applications that support that in terms of the future development of data centres and large energy users overall. There is the large energy users action plan and the CRU's direction that came out at the end of 2025, which we are trying to implement with ESB Networks. Both of those documents talk about the constraints that apply in the greater Dublin area. Both documents talk about Dublin being a constrained area and that goes back as far as the 2021-----

Therefore, no more applications can proceed in the greater Dublin area.

Mr. Errol Close

It is also noted that within the large energy users action plan, we will continue to work with the Government to see whether there are limited opportunities for development in the Dublin area and we will respond to them on a case-by-case basis.

They cannot proceed.

Deputy, we are out of time.

The opening statement said they cannot proceed and now Mr. Close is saying they might proceed sometimes.

Mr. Errol Close

It is a constrained area.

We are moving on.

Does the CRU think data centres should be required to disclose energy and water consumption?

Mr. Jim Gannon

Regarding energy consumption, that might be similar to the question Deputy Gibney posed on the energy efficiency directive. We have no remit for energy efficiency, which might track consumption, if I can put it that way. In terms of water-----

Would CRU like to have or be given the capacity to do it?

Mr. Jim Gannon

That is a policy matter and it is up to national policy to determine what entity might be best suited to it.

Would Mr. Gannon be in favour of such a policy?

Mr. Jim Gannon

The energy efficiency directive is an important component of the European acquis relating to energy. It will support our energy management nationally when it comes in. As to whether we are the right organisation, I do not know and it will be for the policyholders to determine.

How can the public be assured that there is a clear system of accountability to ensure the risks and costs are properly managed and not simply passed on to householders and other consumers?

Mr. Jim Gannon

In some of our comments earlier on network tariffs, Mr. McEvoy cited some figures and the basis on which costs are allocated. The level of demand is approximately commensurate with the network tariffs that are currently being applied in relation to extra-large energy users, about 27%, versus residential consumers and smaller businesses, which are about 50% or 51%. However, we are not just looking at today but at the future. Last week we published the outcome of the consultation on the network tariff review project which looked at how these cost drivers arise, how costs are allocated and how they will be allocated in the future to ensure the revenue and the costs are distributed to the customers driving that. We are in the middle of a review of those network tariffs to ensure that people are paying their fair share, so to speak, and a cost-reflective tariff.

My last question may be a loaded question. What is Mr. Gannon's opinion on the moratorium on data centres in Scotland?

Mr. Jim Gannon

That is not something I am aware of or up to speed on.

I thank the witnesses. Is it correct that the CRU is the regulator for water services?

Mr. Jim Gannon

Correct.

Mr. Gannon may not have seen last week's meeting with Friends of the Earth. We discussed water usage by data centres. Irish Water regularly cites a figure of 0.3% of total national water usage by data centres. I believe the provenance of that figure is a bit old and goes back to 2022 or thereabouts. As the water regulator, does the CRU know the figures for water usage by data centres?

Mr. Jim Gannon

Uisce Éireann conducted a review in 2022 on the volume used by data centres. It repeated that again in 2026. That started with a desktop study and progressed to metered connections, including site visits to metered connections. The most recent review from the week ending 31 July has shown that while data centre consumption fluctuates, the peak volume consumed of 6.5 megalitres per day is approximately 0.34% of total production and that the average year to date of 3.7 megalitres per day represents 0.2%. Those figures are for the year to date. Uisce Éireann also performed a review in 2022.

I do not know how many data centres have been constructed in the last four years. It does not appear that the dial has moved in terms of overall water usage by data centres. Peak usage is 0.3%, exactly as it was four years ago, and it is 0.2% on average.

Mr. Jim Gannon

I do not have the 2022 figures in front of me. I am citing the figures for 2026. However, I think it is true to say that it depends on the design of the data centre and, more recently, data centres have been designed to be less demand-heavy on water in terms of the technology.

Mr. Gannon will be very familiar with the debate. Many people in the general public will be very surprised to know that it is just 0.3%. To my mind that sounds almost like a negligible figure. If you were to ask somebody on the street how much water data centres use, I think they would believe it would be many multiples of that. Why is there a perception of data centres as being major water users? Am I wrong? Is 0.3% a statistically significant figure in some way by comparison with others? Is this debate on water usage and data centres just skewed and wrong? What is Mr. Gannon's view?

Mr. Jim Gannon

I cannot speak to public opinion or what is covered in the media. I can speak to our figures and be transparent with those figures. An amount of 6.5 megalitres of water per day or 3.7 megalitres of water per day is still 6.5 million litres or 3.7 million litres of water per day. These are not insignificant numbers but in the context of our production, which is 1.8 billion litres of water a day in Ireland, they are relatively small figures. That does not mean we should not continue to monitor them to make sure our water supplies are robust and resilient.

Does the CRU monitor the water usage of data centres?

Mr. Jim Gannon

As part of the revenue control framework with Uisce Éireann, we would look at the resilience of water supplies.

Mr. Tarrant mentioned a €19 billion investment between now and 2030. A total of €13 billion is for ESB Networks and €5 billion is for EirGrid. There is State investment on top of that as well. How are those investments going? Are we on track? How is the construction of all these moneys? Were all these moneys assigned in 2026? Are we only at the beginning of this investment cycle? What does that look like?

Mr. Nicholas Tarrant

This is a major transformation in the electricity network over the years ahead. It is not just this current price review that runs from January this year until the end of 2030. This is going to be a multiple price review investment programme because the whole energy system is transitioning. There is the connection of renewables and the increase of demand through electrification of heat and transport, as well as economic growth and the continued growth of housing. It is a huge investment programme. We in ESB Networks have been building our plans right through the previous price review. For example, in headline numbers, in the first half of this year, we announced our interim results in ESB and the investment in electricity networks in ESB Networks is-----

I only have a minute. Are the investments going-----

Mr. Nicholas Tarrant

They are growing. It is double the investment now compared to 2021. Many of the projects are getting under way because the price review was only finalised in December.

Sorry for rushing Mr. Tarrant. How are EirGrid's investments going, with respect to the assignment of moneys that EirGrid has been given as part of this 2026 to 2030 programme?

Mr. Errol Close

Significant progress has been made. We have 29 priority projects within the PR6 window. Sixteen of those have moved into construction, so they have gone through the consenting phase. We had three projects put on the Critical Infrastructure Act and two of the planning permissions have come through for those three projects already. The third, the North-South interconnector, will be moving through towards construction over the next six to eight months. We have 381 other broader transmission projects within the portfolio and good progress is being made across them all.

With respect to water, the witnesses indicated they are happy with Uisce Éireann's approach. What do they make of the situation whereby an individual data centre's reported water usage was higher than what Uisce Éireann had estimated at one point? There is a disjoin and it was indicated there has been an issue in relation to how that is captured. On other aspects of the water regulation, is monitoring of temperature impact and e-waste things that the witnesses are engaging with Uisce Éireann in respect of how they are being monitored? What should the monitoring be? Are there indicators within water monitoring that the witnesses think could be or should be strengthened? On an international level, we know that 4.5 trillion litres of water were used in 2025 and that by 2030, AI's water usage would match the needs of 1.3 billion people in sub-Saharan Africa. There is a kind of a scale on that industry. Are the witnesses having international conversations in relation to water usage and the models?

I mentioned e-waste, which is a key issue. This goes to ESB and EirGrid too. We know that there is a competition for precious minerals, effectively, and with digitalisation on one side, which is looking for the same minerals as renewables. Does that create a pressure point? Is that something the witnesses look to when we are scaling up renewables? There is this huge new industry that is now driving a greater demand for the exact same minerals that we need. Will the witnesses comment on its effect nationally and internationally?

To confirm, are the witnesses still adopting the position that they do not have prioritisation for housing and so forth, but that they will give a data centre's connection priority if it is first to ask? The pricing issue has probably come up already, so if it has, maybe do not answer. I was not here for-----

There are only two and a half minutes, if the Senator wants to give the witnesses time to answer.

I will get the answer. Did the pricing issue come up already? It probably did.

Mr. Jim Gannon

I will try to tackle as many of those questions as I can.

My final question relates to the CRU’s application of section 15. There are EU rules-----

Mr. Jim Gannon

Is that section 15 of the climate Act?

Yes. How is the CRU applying it? Are the new EU rules helping in that regard?

Mr. Jim Gannon

I am not aware of a specific case reported where there is a discrepancy between Uisce Éireann's figures and those of others. If the Senator has information in that regard, it would be helpful. We could feed Uisce Éireann's figures into that and come back to the committee. I ask the Senator to please reach out in that regard.

With regard to the temperature of effluent where, I presume that there is no circulating system within the data centre that is more subject to environmental licensing by the EPA.

In respect of the e-waste question - not the one directed to ESB Networks - I expect that there may be something there in the context of the circular economy, but I am not sure. Certainly, e-waste does not come within our bailiwick. The environmental characteristics of effluent come under environmental licensing.

I will let the witnesses from ESB Networks answer the question on prioritisation. A change to the prioritisation of demand connections would likely require Government policy and a change to underpinning legislation in order for a prioritisation framework to be introduced. That said, a number of countries appear to have started to look at this or to move in this direction. Examples might include the Netherlands, Norway, Denmark and Spain. There may be something there for future policy.

We continue to operate in alignment with section 15 of the climate Act. We are firm in that commitment. Recently, we have undertaken a number of months of work to ensure we have a specific system in place for our decisions in order that we remain in alignment. It will be part of our consultations and decision-making process, which will be transparent.

Mr. Nicholas Tarrant

I will comment briefly on two things. The issue of prioritisation has been covered. We have a licence obligation. That is set by the CRU around non-discrimination between customers. However, we follow directions from the CRU, such as the data centre direction that was issued to both ESB Networks and EirGrid as system operators.

On the wider point about some of the countries that have faced challenges around prioritisation, it is because of the growth in demand on their systems, whether renewable connections or electricity demand. As we look to the years ahead, particularly in the context of the importance of the PR 6 programme, it is crucial that we continue to accelerate investment so that we do not need to face those choices.

On the issue of minerals, it is outside of our direct control. For example, we do not build wind farms. We will continue to invest in the network and the types of commodities that we use, such as copper and aluminium. Exposure to the broader demand at a global level for those types of commodities is something that we are seeing. That then reflects through pricing and availability in what is a global market for these types of materials.

I am next. Deputy Heneghan was present earlier but has since left. I have one question for EirGrid. Ireland is competing for AI investment, like most countries around the world. AI requires computing, data centres, chips, etc. IDA Ireland plays a key role in attracting start-ups, scale-ups, unicorns and international companies to Ireland. Part of its role relates to site visits. When these companies have conversations with EirGrid, is it becoming more common for them to require a data centre or access to one? Are things changing from that perspective? Rather than simply having access to the grid, are more of these AI companies looking to establish their own data centres or have a connection to one?

Mr. Errol Close

There is ongoing engagement with IDA Ireland, as one would expect, on the variety of different needs the companies have. The three key areas that seem to be outlined in IDA Ireland's strategy relate to semi-conductors, life sciences and data centres. Data centres affect us directly. Those technology companies are generally looking for where they can locate data centres. The impact on other business from the development of AI can be seen. For example, semi-conductor demand has increased as a result of AI. Growth will be seen in that regard. We have seen announcements to that effect in that sector over the past number of months.

For us, the key is to actively engage with IDA Ireland on the large energy users action plan. If we want to materialise that kind of investment and set out a positive environment for it, that will be done through the co-location of some of our abundant renewable generation resources and some of the dispatchable sources that we need to those back up and looking at the industrial demand that exists within green energy parks. Developing that model and a plan-led approach will really serve us well in terms of giving long-term thinking.

Does Mr. Close think EirGrid will recommend that some of these companies locate where the green energy parks are, namely in Offaly and other places throughout the country? Would that be a recommendation that would bring more employment into those regions?

Mr. Errol Close

That is the key part of the LEAP, which looks at how we regionalise it and co-locate those various resources and bring in renewables, dispatchable generation and industrial demand. You could see elements of that within the direction set in 2025. That has been the direction of travel since the period 2021 to 2025. The LEAP relates to how we want to set that out on an overall State level.

That is great. I thank Mr. Close.

My first question is to Mr. Tarrant from the ESB. CSO figures show that data centres account for 23% and rising of Ireland's metered electricity consumption. At the same time and as Mr. Tarrant is well aware, there is a significant difference for the electricity price per kilowatt paid by households and LEUs such as data centres. The CRU has begun a major review of the network tariff structure. From the ESB's perspective, does the current charging structure adequately reflect the costs created for the network by rapidly expanding LEUs?

Mr. Nicholas Tarrant

I am not sure if we are best placed to answer that question. The setting of tariffs is done by the CRU, as has been mentioned. There is a project to look at that in which we will partake.

I appreciate that the CRU sets the tariffs, but ESB Networks operates the distribution system and has a direct visibility of where network investments are being driven. From a technical and infrastructural perspective, does Mr. Tarrant believe that any LEU is currently paying a fair share of the network costs as demand increases?

Mr. Nicholas Tarrant

It is not a matter of opinion for us as to what they or any particular user should be paying. As system operators, our role is to implement the tariff policy as set down. That is what we are doing. If you take the transmission system - EirGrid obviously looks after transmission connected customers - there are transmission use of system, TUoS, charges that those customers pay. At distribution level, there are distribution use of system, DUoS, and TUoS charges that those parties pay to the network.

I appreciate that.

Mr. Nicholas Tarrant

It is not something we can comment on at a policy level. Implementing policy is our main role.

I appreciate that. I apologise because I am short on time. EirGrid obviously modelled the additional electricity demand arising from AI. I appreciate all of the correspondence EirGrid has had with my office. With the increases, and we have seen AI and everything, what does the modelling show about the pressure on electricity systems between now and 2030? What does EirGrid think the Government should be doing with policy and with the grid in order to alleviate pressure on the system?

Dr. Liam Ryan

On the plan for the grid, the PR 6 will be really important out to 2030. That is the largest investment we will be making in the grid to meet the demand for large energy users, housing and economic growth that we have. The key is that we deliver that. It is a must that we actually do that. At the same time, we look at a ten-year time horizon and the demand growth, which covers all of those aspects. Key to that is making sure our capacity market delivers the capacity we need in the locations. As my colleague said a few moments ago, it is really important that we have the energy parks. They will allow us to deliver in the most efficient manner for the end consumer.

I thank the CRU, EirGrid and ESB Networks for an excellent discussion this morning. We appreciate all of the witnesses being here with us and answering our questions.

Cuireadh an comhchoiste ar athló ar 12.59 p.m. go dtí 11 a.m. Dé Máirt, an 6 Deireadh Fómhair 2026.
The joint committee adjourned at 12.59 p.m. until 11 a.m. on Tuesday, 6 October 2026.
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