Regulation of retail energy markets is solely a matter for the Commission for Regulation of Utilities (CRU) since the enactment of the Electricity Regulation Act 1999 and subsequent legislation. However, officials from my Department correspond with the CRU on an ongoing basis to track developments in retail and wholesale energy markets.
The CRU releases market monitoring data monthly to my Department, including items such as estimated annual bills for households and the number of households in payment arrears on their electricity and gas bills. The most recent of these releases, which is at the link below, includes the most up-to-date estimated annual bills and the latest available data on the number of customers in arrears. As arrears data operates with a two-month time lag due to the way suppliers report these figures to the CRU, the latest arrear data is for November 2025.
Number in Arrears