Gas output fell early on Saturday after a fire at the Kaarstoe gas plant on Norway's western coast and Statoil, a co-owner of the facility, has been working to resume normal operations.

Monday's outage equals around 5 percent of Norway's exports on a normal winter day.

Norway supplies about 20 percent of Europe's gas needs and state-controlled Statoil is the nation's biggest producer.

Gas production soared in 2012 as Norway managed to take market share away from Russia, and firms have been running their production at capacity.