On 9 January 2026 the European Commission published a guidance note on the promotion of innovative technologies and forms of renewable energy deployment, including a section on plug-in mini solar systems.
Officials from my Department have engaged with stakeholders on the optional provisions in the New Electricity Market Design Directive (2024/1711), including the provision relating to plug-in mini solar systems, through an online consultation that ran from September to October 2024. Broadly speaking, responses to the optional provision to promote plug-in mini solar systems were negative. Concerns arose where such mini systems could be purchased and installed but do not meet the required manufacturing, installation, or operational standards. This was also noted in the European Commission Guidance Note (C/2026/17) on innovative technologies and forms of renewable energy deployment. It was noted that substandard systems might result in an elevated risk to health, safety, and the operation of the distribution network.
Current microgen supports are predicated on minimum safety and quality standards being adhered to, via a code of practice for such installations, including very clear electrical wiring standards. Plug-in mini solar systems by their very nature are portable, so it is difficult to predict how and in what circumstances they would be used. Some form of regulation may be needed were plug-in mini solar to be promoted.
In light of the potential safety and other issues arising, further consideration of this matter with relevant Agencies and Regulators, including with ESB Networks in its role as the system operator, is required.
