Great Britain has experienced a significant rise in new solar power installations in the first half of 2026, reaching levels unseen since 2011. Official government data shows that 142,536 solar installations were added between January and June, positioning the country to surpass last year’s record for new solar capacity.
The surge primarily reflects increased adoption of rooftop solar panels by households, although larger ground-mounted solar farms are also included in the tally. While rooftop systems constitute less than one-third of the country’s total solar capacity, they represent the majority of new installations during this period. The trend has been driven largely by households seeking to reduce energy costs amid volatile fossil fuel prices, according to energy providers.
Energy suppliers point to the rising demand for solar panels as a response to spiraling energy bills. Octopus Energy, the nation’s largest energy supplier, reported a 54% jump in solar panel sales in March, closely following a surge in oil and gas prices due to the conflict in the Middle East. Similarly, E.ON Next, a major household energy supplier, noted a 151% increase in homes installing solar panels in the first half of the year compared with the same period in 2025.
In addition to solar growth, the government’s data revealed a considerable rise in applications for grants to replace gas boilers with low-carbon heating alternatives. The boiler upgrade scheme received 4,512 applications in July, a 21% increase over June of the previous year. Government support for heat pump installations has recently intensified, with grant funding raised by 20% to £9,000 to help offset the costs of switching from fossil fuel heating systems. From October, VAT on electricity bills will be reduced, further making heat pump operation more affordable under policies introduced by Prime Minister Andy Burnham.
The nation’s solar capacity has expanded rapidly since the first large-scale solar farm was commissioned in June 2011 near Truro, Cornwall. The 1.4 MW Wheal Jane solar farm, constructed on a former tin mine site, has since been eclipsed by projects like the 373 MW Cleve Hill solar development in Kent, which became Britain’s largest operational solar farm last summer, and the planned 800 MW Springwell solar farm in Lincolnshire, anticipated to begin operation in 2029.
Legislative changes also aim to broaden solar access: from the end of August, residents of flats and rented properties across the UK will be able to install balcony solar panels, aligning with similar arrangements already in place across Europe. This measure is expected to further increase household-level solar generation.
Industry experts note that greater consumer engagement with energy generation and storage is a growing trend. Phil Gilbert, director at E.ON Next, highlighted that many customers can save up to £600 annually by using solar panels combined with battery storage, demonstrating the financial benefits driving the continued expansion of domestic solar energy in Great Britain.