As of the end of June 2026, the UK’s solar power capacity has reached 22.8 gigawatts, reflecting continued growth in national deployment. The Department for Energy Security and Net Zero reported approximately 2.076 million installations nationwide. In June, households and businesses collectively added 27,391 systems, generating an additional 132 megawatts of capacity. These figures are provisional and may be revised as officials receive more project data. Britain adds thousands of solar systems before new plug-in standards take effect. June marked the second-highest monthly installation total in the UK data series, trailing only March 2026, which saw 28,782 systems installed. Over the year leading up to June, solar capacity expanded by 2.2 gigawatts, representing a 10.9% increase. The 2025 tally also includes roughly 269,000 new systems, the highest annual figure recorded so far. While rooftop installations contributed most to the overall number, larger projects provided a bigger share of the new generation capacity. Approaching a notable policy shift, the sector is preparing for upcoming rules governing small plug-in solar systems. Starting August 27, 2026, new regulations will permit approved microgenerators to connect via a standard UK plug and household socket. These eligible devices can supply up to 800 watts of alternating current, must comply with Interim Product Specification version 2, and operate safely with the local grid. New standards specify approved plug-in systems The
