Utility Regulator concludes review of regulated electricity and gas tariffs
… tariffs for Power NI, SSE Airtricity Gas Supply and Firmus Energy. The changes to the regulated tariffs will come into … Gas Supply (Greater Belfast and Western areas) and Firmus Energy (Ten Towns area). “Following our analysis we have … £94 per year. As announced on 4 September 2025, Firmus Energy’s regulated tariff will decrease by 7.86%, or around …