Please select your town from the dropdown below.
With firmus energy, your CO2
emissions are 30% less than that
of oil customers*.
Natural gas is not only the
cleanest, but one of the most
efficient ways to heat your home!
Upgrade your home heating with a high energy efficient natural gas system helping you save money and reduce your energy usage.
You can track and compare your energy usage. Your energy bills are always available to view 24/7 through your online account.
Thank you for visiting firmus energy. We have listed some of your top questions below. You can find our full customer queries in the help & advice section.
firmus energy (Supply) Limited will be writing to its customers to advise that both Ten Towns and Greater Belfast tariffs will be increasing next month.Read More
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Small businesses spend about £2,600 or less per bill. Medium businesses spend about £35,000 or less per bill.Yes
Do you receive a monthly bill for your energy usage?Yes
Do you purchase a top-up card for your energy?Yes
All we need is your account number and sort code *
This is the number usually at the top right of your bill †
If your account requires 2 signatures, or you are not the bank account holder, please call us first on 0800 032 4567
† If you don’t have this number, call our switch team on 0800 032 4567