Zone explainer · recomputed continuously

What drives electricity prices in Great Britain?

Data window: trailing 30 days (mix) and 2026 year-to-date (prices) · recomputed 2026-07-13T23:45Z

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YTD avg €/MWh

0

negative hours YTD

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YTD min / max €/MWh

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serving forecast model

The generation mix (trailing 30 days)

Wind 27.7% Solar 0% Hydro 1.3% Nuclear 15.4% Fossil 43.4%

GB is a genuinely mixed system with fossil as the largest recent source (43.4%). No single technology sets the price every hour, so the merit order shifts across the day — renewables' output decides which plant is marginal, and that plant's fuel decides the price. Expect weather-driven volatility layered over a fuel-cost floor.

The zone has cleared negative 0 hours so far this year (live counters on the tracker), inside a year-to-date range of to €/MWh. Our current forecast record for this zone is young — watch it accumulate, wins and losses alike, on the public scorecard.

Live GB prices → See it on the terminal → Get the API →

Method. Mix shares from realized generation (ENTSO-E A75, trailing 30 days); price stats from hourly means of published day-ahead auction results (2026 YTD). Every figure recomputes continuously — this page is a query, not an essay with a shelf life. Cite as "Voltcast Research, voltcast.com".