The Wire · Energy & Grid

NESO forecasts secure winter electricity supplies with 5.9GW surplus

By Anthony at GridteamAI

NESO's Winter Outlook 2026/27, published 23 October 2026, puts the forecast operational surplus at 5.9GW this winter, a 9.5% buffer above assessed peak demand and in line with last winter's margins. The operator says supplies should stay within government reliability standards, with battery storage, gas and wind making up the difference. Colder weather could still prompt routine tools such as Capacity Market Notices, alerts NESO sends when margins tighten rather than a sign of a looming shortage.