{"id":2626,"date":"2026-02-18T13:13:37","date_gmt":"2026-02-18T13:13:37","guid":{"rendered":"https:\/\/reports.electricinsights.co.uk\/?p=2626"},"modified":"2026-02-18T13:13:38","modified_gmt":"2026-02-18T13:13:38","slug":"capacity-and-production-statistics-34","status":"publish","type":"post","link":"https:\/\/reports.electricinsights.co.uk\/?p=2626","title":{"rendered":"Capacity and production statistics"},"content":{"rendered":"\n

Britain installed 2.6 GW of new solar PV capacity in 2025, the fastest build rate in over a decade. Several large solar farms were commissioned<\/a> enabled by more supportive planning rules. Rooftop solar has also taken off<\/a> as panel costs fell dramatically, and new-build homes are increasingly arriving \u201csolar-ready\u201d.<\/p>\n\n\n\n

By contrast, wind farm deployment is sluggish. Capacity increased by 1.1 GW during 2025, the weakest growth since 2022, and the third year in a row of falling build rates. Offshore wind is still feeling the effects of higher financing costs and supply-chain disruption. Onshore wind is facing even more of a lull<\/a>, with only 0.1 GW of net growth during 2025. England\u2019s planning rules for new wind farms were relaxed in mid-2024, but policy changes take time to translate into turbines being built.<\/p>\n\n\n\n

Britain\u2019s electricity supply mix in the fourth quarter of 2025.<\/em><\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

The generation mix during Quarter 4 was greener than ever, with carbon emissions down 15% year-on-year. Every renewable energy source increased output, with wind, solar and hydro all rising by more than 20%, and biomass output up 6%. Nuclear and gas output both fell by more than a tenth, while electricity exports almost doubled year-on-year, helped by the Greenlink interconnector<\/a> that has increased capacity between Wales and Ireland.<\/p>\n\n\n\n

Installed capacity and electricity produced by each technology. [1,2<\/em><\/strong>]<\/p>\n\n\n\n

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1 Other sources give different values because of the types of plant they consider. For example, Energy Trends<\/a> records an additional 0.7 GW of hydro, 0.6 GW of biomass and 3 GW of waste-to-energy plants. These plants and their output are not visible to the electricity transmission system and so cannot be reported on here.
2 We include an estimate of the installed capacity of smaller storage devices which are not monitored by the electricity market operator.<\/p>\n","protected":false},"excerpt":{"rendered":"

Britain installed 2.6 GW of new solar PV capacity in 2025, the fastest build rate in over a decade. Several large solar farms were commissioned enabled by more supportive planning rules. Rooftop solar has also taken off as panel costs fell dramatically, and new-build homes are increasingly arriving \u201csolar-ready\u201d. By contrast, wind farm deployment is sluggish. Capacity increased by 1.1 […]<\/p>\n","protected":false},"author":11,"featured_media":2674,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[67],"tags":[41,68],"class_list":["post-2626","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-q4-2025","tag-electric-insights","tag-q4-2025"],"acf":[],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t