Britain’s electricity grid operator, Neso, cancels a previously issued power alert during the ongoing heatwave. Neso had published an “electricity margin notice” for Wednesday evening, covering the 7pm to 10pm window. The notice is designed to inform stakeholders when electricity supply margins are tighter than normal, typically indicating greater risk of reduced reserve levels during peak demand periods. According to the reports, the warning is withdrawn for that evening timeframe, meaning the operator no longer expects the same level of pressure on the grid during the specified hours. The cancellation reflects an updated assessment of system conditions closer to the period in question, including factors such as electricity demand, available generation, and network performance. The reports do not provide further operational details about what changes led to the decision, but they agree on the core point: the heatwave-era notice for 7pm to 10pm on Wednesday is cancelled.