Northern Irish gas supplier Firmus Energy is cutting prices for some customers by more than 20% from April.
This means around 50,000 households are to see their gas bills fall by an annual total of £135.
It said the main reason for the price cut is a significant decrease in wholesale gas costs and suggested the move could herald a wider cut in energy prices.
Michael Scott, Managing Director of Firmus Energy, said: “This saving follows on from a previous reduction of 8.77% in October last year and means that natural gas is now almost 30% cheaper than last summer.”
Challenger energy supplier Bulb has also recently announced it is cutting its gas rates whilst stepping up its power prices.