GB GRID38.7 GWdemand · 74% low-carbonCARBON96 gCO₂/kWhnational avg · day-ahead cleanWHOLESALE£73/MWhN2EX day-ahead, GBFLEX312 MWcleared in Octopus auctionSTORAGE4.8 GWutility-scale online · GBBALANCING£2.5 bnFY25 settled · ESOGB GRID38.7 GWdemand · 74% low-carbonCARBON96 gCO₂/kWhnational avg · day-ahead cleanWHOLESALE£73/MWhN2EX day-ahead, GBFLEX312 MWcleared in Octopus auctionSTORAGE4.8 GWutility-scale online · GBBALANCING£2.5 bnFY25 settled · ESO