Northern Ireland's Utility Regulator is reviewing gas and electricity tariffs that could lead to a cut in prices later this year.
The reviews will conclude during February to allow any changes to bills to take effect from 1 April.
The regulatory framework for energy in NI means movements in wholesale costs should be reflected in consumer bills.
Wholesale gas prices, a major component in both gas and electricity bills, have been falling in recent months.
In a statement the regulator said: "As the regulator of Power NI we continuously monitor the components that make up the company's electricity tariff.
"Separately we have also been progressing a review of regulated gas tariffs - in respect of Airtricity Gas Supply (for the greater Belfast area) and Firmus Energy (for the ten towns area)."