Britain will seek almost 52 GW of back-up electricity for the winter of 2020/2021 in a capacity auction on December 6th, National Grid announced on Tuesday.

The UK began capacity auctions in 2014 looking to head off future winter power shortages as coal-fired power plants close and low power prices dissuade investors from building new ones. Selected power plant owners are paid to make available back-up electricity at short notice.
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Last December an auction for winter 2019/20 cleared at £18 per kilowatt per year.

Reuters reports that as wholesale electricity prices have fallen further since, operators are suffering more and will likely need bigger incentives in future auctions to keep capacity available.