Britain sought extra generation as low wind forecasts tightened electricity margins
Original report:
Britain’s electricity system operator sought additional generation for the morning of 9 November 2026 amid low European wind forecasts. A subsequent review reduced the reported supply-margin shortfall, while the operator stressed that customers faced no risk of power cuts.
The National Energy System Operator issued an overnight notice seeking more electricity generation in Britain for 9 November 2026. Its initial assessment identified a supply-margin shortfall of almost 1,400 megawatts between 6am and 11am. It sought about 800 megawatts of additional generation ahead of a 4am review, according to the Guardian.
After that review, Neso reported that the margin shortfall had narrowed to 500 megawatts and no further contingency power was needed. Plants could still be asked to increase output between 8am and 11am. Neso described the notice as precautionary and said electricity supplies to customers were secure, with no action required.
Such notices had typically been associated with cold winter evenings, when electricity demand peaks. The report described a recent increase in alerts, including summer notices as heatwaves raised demand and constrained generation. Low European wind output was suggested as a cause of this episode, rather than established conclusively.
Source
the Guardian — 9 November 2026
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