Britain's electricity and gas grid operators expect supplies to meet demand in winter 2026-27, according to reports by The Independent and Sky News. The forecasts come with qualifications: some days could be tight for electricity, and Britain's gas outlook depends increasingly on imports.
The National Energy System Operator (NESO) expects Britain's electricity network to remain stable through the winter. Its modelling suggests "tight days" could occur, most likely in December or January, when cold, still and overcast weather raises heating demand while wind and solar generation fall. NESO may issue system notices asking the energy market to bring in additional generation. Sky News reports that NESO expects the buffer between projected electricity supply and demand to be similar to recent years, though tighter periods remain possible.
More LNG in the gas forecast
National Gas expects enough supply capability to meet winter demand, The Independent reports, even under the operator's worst-case scenarios. It forecasts gas production from the UK continental shelf falling around 5% and imports of liquefied natural gas, or LNG, rising around 6%. Sky News reports that National Gas expects overall gas demand to fall even as peak demand for gas-fired electricity generation rises.
Greater reliance on imported LNG leaves Britain exposed to international market conditions. National Gas warned that "international disruptions, including geopolitical events, may affect market conditions," Sky News reports. Its analysis identified a "rare and very unlikely" combination, such as extreme weather alongside a major supply disruption, that could challenge security of supply.
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