The UK passed 2 million solar installations by March 2026, with total installed capacity reaching 22.1GW – a genuinely dramatic rise from just 28,131 solar households back in 2010. Growth has accelerated notably over the past year, with March 2026 alone recording the highest number of monthly installations since 2012, when the original Feed-in Tariff scheme was still driving a very different kind of boom.
Headline UK Solar Statistics
| Metric | Figure |
|---|---|
| Total UK solar installations (March 2026) | 2 million+ |
| Total installed capacity | 22.1 GW |
| Capacity added in the 12 months to March 2026 | 2.3 GW |
| Annual growth rate (12 months to March 2026) | 11.7% |
| Installations in March 2026 alone | 27,607 (highest single month since 2012) |
| Share of installations under 50kW (mostly domestic) | 99% of installations, 37% of total capacity |
How UK Solar Adoption Has Grown Since 2010
UK household solar adoption climbed from around 28,131 households in 2010, to 500,000 by 2013, passing 1 million by 2021, and now over 2 million by early 2026 – a trajectory that shows genuine acceleration recently rather than steady linear growth. Much of the recent uptick has been credited to renewed government support, including a £15 billion home energy efficiency investment programme offering grants and loans for rooftop solar expected to run through 2030.
Why Most Installed Capacity Sits Outside Small Domestic Systems
Despite domestic-scale installations (under 50kW) making up 99% of the total number of installations, they only account for around 37% of total deployed capacity – meaning the remaining 63% of UK solar capacity comes from the much smaller number of larger commercial and utility-scale solar farms. This is a useful reminder that “most installations are small” and “most capacity is small-scale” are two genuinely different statistics, easily conflated.
Where Solar Adoption Is Strongest Across the UK
South East England leads in absolute installation numbers, while South West England has the highest household penetration rate at around 8.5% – ahead of Wales (roughly 7.2%) and East of England (roughly 6.7%). This pattern broadly tracks a mix of solar irradiance, property type, and regional take-up of past incentive schemes, rather than any single factor alone.
Solar\u2019s Share of Overall UK Electricity Generation
Solar contributes a meaningful, growing slice of UK electricity generation, though it remains behind wind as the UK’s dominant renewable source. As capacity has continued expanding through 2025 and into 2026, solar’s contribution has kept rising, particularly during the longer daylight hours of spring and summer, when UK-wide solar generation can briefly cover a substantial share of national demand on a bright day.
What These Numbers Suggest for the Rest of the Decade
With 11.7% annual growth and government-backed funding programmes running through 2030, UK solar capacity looks set to continue expanding at a meaningfully faster pace than the relatively quiet years following the 2019 Feed-in Tariff closure. For anyone still weighing up whether to install, this broader momentum reflects genuinely improving underlying economics (falling equipment costs, rising grid electricity prices) rather than a temporary policy-driven spike.
Frequently Asked Questions About UK Solar Power Statistics
How many UK homes have solar panels?
Over 2 million UK properties had solar installations as of March 2026, out of a total UK housing stock of around 30 million homes – meaning roughly 1 in 15 UK properties currently has solar, with that ratio climbing steadily.
What is the UK\u2019s total installed solar capacity?
22.1 gigawatts (GW) as of March 2026, up from roughly 2.3GW added in just the preceding 12 months – reflecting the accelerated growth the sector has seen recently compared with the years immediately following the Feed-in Tariff scheme’s closure.
Is UK solar adoption speeding up or slowing down?
Speeding up – March 2026 recorded the highest number of monthly installations since 2012, and annual growth reached 11.7% in the year to March 2026, a notably stronger pace than the relatively subdued years following the 2019 closure of the original Feed-in Tariff scheme.
