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3h ago

Britain’s Winter Blackout Risk Falls to Lowest Level in Six Years

NESO credits battery growth, record renewables, a new Ireland interconnector for the wider cushion.

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Higher battery storage levels, more gas-fired power and a new interconnector to Ireland, which can import energy, should ensure a larger buffer against potential shortages
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Overview

  • NESO projects an electricity supply margin of around 10% — about 6.1 GW at peak — up from 8.8% last winter.
  • Expanded battery storage, record renewable generation, and an April‑commissioned subsea interconnector to Ireland underpin the improved outlook.
  • Officials still flag a small number of potential “tight days” in early December or mid‑January when system notices could be used to call up more supply.
  • National Gas reports capability to meet peak gas demand, with overall winter gas use forecast to be roughly 3% lower than last year.
  • With the Rough storage site no longer being filled, reduced domestic gas storage heightens reliance on imports and LNG, though NESO’s downside case still retains a positive 3.4 GW buffer.