In August 2025, the Utility Regulator commenced a review of Firmus Energy Supply’s (Ten Towns area) regulated gas tariff for domestic and small business customers.
Commenting on the conclusion of the tariff review, Colin Broomfield, Director of Markets at the Utility Regulator said:
“In August 2025, we began a formal review of the regulated tariff for Firmus Energy Supply (Ten Towns area). Following this analysis, we have determined that Firmus Energy Supply’s regulated tariff will decrease by 7.86%.
“Firmus Energy Supply’s decrease of 7.86% will come into effect from 1 October 2025. This will mean that the average annual bill for a standard credit customer will be approximately £935.
“We are finalising the regulated tariff reviews for Power NI and SSE Airtricity Gas Supply, with an announcement due on Friday 5 September. A comparison of all Northern Ireland’s regulated tariffs, with the GB price cap and Ireland, will be provided then.
“We recognise that many households and businesses are still struggling with their energy costs. If you are worried about paying for your electricity or gas, we would encourage you to contact your supplier in the first instance, to make them aware of your circumstances, and discuss the options available. In addition, there are a number of agencies who can provide free and independent advice to households, including Advice NI, Christians Against Poverty, the Consumer Council and Money and Pensions Service’s MoneyHelper.”
This tariff announcement marks the conclusion of a review undertaken by the Utility Regulator and Firmus Energy Supply, in consultation with the Department for the Economy and the Consumer Council for Northern Ireland.
A briefing paper on the tariff review is available here.
Further information:
Media contact: Adele Boyle on 07787 279584.
Average annual bill of £935 is based on a domestic customer consuming 12,000 kWh of gas on the standard tariff.
The gas tariff reviews include small business customers using less than 2,500 therms per annum.
The Consumer Council’s website has energy advice for consumers and also provides an independent energy price comparison tool to help consumers save money.
A number of agencies can provide free and independent advice, including Advice NI, Money and Pensions Service and Christians Against Poverty.