https://www.ukenergydata.co.uk/ The monthly State of the grid report and weekly articles on Great Britain's electricity, written from public data. en-gb Thu, 08 Oct 2026 02:57:50 GMT https://www.ukenergydata.co.uk/icon-512.pnghttps://www.ukenergydata.co.uk/ https://www.ukenergydata.co.uk/state-of-the-grid/2026-09 https://www.ukenergydata.co.uk/state-of-the-grid/2026-09 Thu, 08 Oct 2026 02:57:50 GMT State of the grid Great Britain's electricity averaged 108 grams of CO₂ per kWh in September 2026, 4% lower than in September 2025 (112 g/kWh). Wind supplied 38% of electricity, ahead of gas at 21% and nuclear at 13%. Zero-carbon sources (wind, solar, nuclear and hydro) made up 60%, and wind's share peaked at 72.8% at 04:30 on Saturday 19 September. https://www.ukenergydata.co.uk/state-of-the-grid/2026-08 https://www.ukenergydata.co.uk/state-of-the-grid/2026-08 Thu, 08 Oct 2026 02:57:47 GMT State of the grid Great Britain's electricity averaged 125 grams of CO₂ per kWh in August 2026, about the same as in August 2025 (124 g/kWh). Wind and gas were almost level, at 23.7% and 23.6% of generation, with nuclear next at 15%. Zero-carbon sources (wind, solar, nuclear and hydro) made up 51%, and wind's share peaked at 61.8% at 04:00 on Thursday 6 August. https://www.ukenergydata.co.uk/insights/2026-10-06-midday-was-the-cleanest-time-to-use-power-in-gb-last-week https://www.ukenergydata.co.uk/insights/2026-10-06-midday-was-the-cleanest-time-to-use-power-in-gb-last-week Tue, 06 Oct 2026 12:00:00 GMT Insights The average carbon intensity for GB was 129 g/kWh last week. Wind provided the largest share of the generation mix at 33.7%. https://www.ukenergydata.co.uk/energy-saving/2026-10-06-midday-offered-the-cheapest-and-cleanest-power-in-london https://www.ukenergydata.co.uk/energy-saving/2026-10-06-midday-offered-the-cheapest-and-cleanest-power-in-london Tue, 06 Oct 2026 12:00:00 GMT Energy saving Agile prices in London reached a low of 5.94p/kWh during the day on Sunday 4 October. Carbon intensity was also lowest during the midday period.