The UK completed 269,000 solar installations in 2025 — the highest total ever recorded in a single calendar year, and 37% more than the year before.
Around 95% were rooftop systems fitted on homes, businesses, and other buildings, equivalent to a new rooftop installation every two minutes throughout the year.
Nine of the ten strongest months for solar deployment on record have all occurred within the past year.
UK sets solar installation record in 2025
The 269,000 figure marks a decisive break from previous trends. The UK has seen steady solar growth for years, but a 37% jump in a single year is something more than incremental progress. Around 255,000 of those installations were rooftop systems — approximately 95% of the total.
That rooftop dominance matters. The expansion is not being driven primarily by large utility-scale projects in fields or industrial zones — homes, businesses, and public buildings are becoming active participants in the energy system instead. One installation every two minutes, across an entire year.
War in Iran and fossil fuel volatility drive household uptake
The surge did not occur in isolation. The outbreak of the war in Iran sharpened public awareness of how exposed the UK remains to volatile fossil fuel markets, and that awareness appears to have translated directly into action.
April 2026 alone recorded nearly 23,000 new solar installations. More than half were on residential properties — a clear indication that households are increasingly choosing to generate their own power rather than remain dependent on imported energy. The UK also crossed a notable threshold in March 2026, surpassing 2 million total solar installations for the first time across homes, communities, and solar farms nationwide.
Read more: Energies Media
