Britain’s electricity supplies expected to remain secure this winter

Britain’s electricity supplies expected to remain secure this winter Ryan.Barnwell@… Fri, 23 Oct 2026 - 08:07 Britain is expected to have sufficient electricity supplies this winter, with new analysis from Winter Outlook 2026/27 forecasting adequate electricity margins throughout the colder months. Published today, our Winter Outlook 2026/27 forecasts an operational surplus of 5.9GW, equivalent to a 9.5% buffer above our assessment of peak demand. The assessment concludes that electricity supplies are expected to remain secure throughout the winter period and within the Government’s reliabilit