Just over 205,000 households across Northern Ireland will face a 19% increase in their gas bills this winter.
The utility operator stated the rise remains 4% below the recently announced price cap in Britain and significantly lower than rates in the Republic of Ireland at £2,726.
The adjustment affects 200,198 domestic customers on the Greater Belfast network alongside roughly 5,300 households connected to the western pipeline.
SSE Airtricity confirmed the price increase will come into effect on October 1, adding around £174 to the average annual bill.
This decision follows a period where wholesale natural gas prices reached their highest levels since the energy crisis triggered by US military action against Iran in late February.
Wholesale costs surpassed the £1.70 per therm threshold on Friday morning after previously trending between 70p and 85p per therm during the second half of last year.
Although prices dipped to above £1.50 per therm in mid-March following the conflict, they had eased by June before climbing again throughout the summer months.
As the regulated supplier for both Greater Belfast and West networks, SSE Airtricity is subject to periodic price reviews with the north's Utility Regulator before announcing changes.