The gas is coming from the Shearwater platform
A new pipeline to help take gas from Shell’s Shearwater platform to the St Fergus plant in Aberdeenshire has been announced.
The 23-mile (37km) link will join Shearwater, 140 miles (225km) east of Aberdeen, with the Fulmar Gas Line.
Shell said the move – part of the creation of a gas infrastructure hub in the central North Sea – would reduce costs.
The hub is expected to produce as much as 400 million cubic feet of gas a day.
Analysis by BBC Scotland business and economy editor Douglas Fraser