The new tariff will be binding from the end of April until the end of 2021, unless Poland's state gas company PGNiG submits another request for a price change.
The British system was slightly oversupplied with demand at 268.4 million cubic metres (mcm) per day and supply at 274.6 mcm/day, according to National Grid data.
Capacity at the Troll gas field was reduced by 27 mcm/day until Wednesday morning due to compressor failure, Norway's Gassco said.
last week's decrease would cut stockpiles to 3.202 trillion cubic feet (tcf), which would still be about 7.5% above the five-year average of around 2.978 tcf for this time of year.
Front-month gas futures rose 1.5 cents, or 0.6%, to $2.742 per million British thermal units.
The day-ahead contract was down 0.15 pence at 45.35 p/therm by 0940 GMT, and further off its highest point since Feb. 2019 of 47.50 p/therm hit on Tuesday.