France exported 16.4 terawatt-hours of power in the first half of the year, almost half the 30.9 terawatt-hours it exported during the same period last year, according to EnAppSys data. France’s nuclear reactors were operating at 50% of capacity on Wednesday, same level as Tuesday, according to Bloomberg calculations using data from grid operator RTE.

Both Germany and the UK increased net exports of power during the same period, mostly responding to the demand from France. Power prices in Germany and France have surged to records in recent days. The UK has identified a reduction in exports from France as a key driver of security of supply this winter.