Britain generated more electricity from solar power than ever before in July, underlining how rapidly renewable energy is becoming a mainstream part of the UK’s electricity system while strengthening energy security and helping reduce dependence on fossil fuels.
A Record Month For Solar
Solar energy supplied a record 14.4 per cent of Great Britain’s electricity during July, comfortably surpassing the previous monthly record of 12.4 per cent, which had been set only two months earlier.
According to data from the National Energy System Operator (NESO), solar generation was also 50 per cent higher than in July last year, producing a total of 3.2 terawatt-hours of electricity during the month. The increase reflected a combination of unusually sunny weather and the continued rapid expansion of solar installations across the country.
Chris Hewett, Chief Executive of Solar Energy UK, said: “Fifteen years ago, solar energy was a footnote in the electricity mix. Now it is a major player, delivering home-grown, cheap, clean and reliable energy. It’s a success story that the whole nation should be proud of.”
More Panels, More Sun, And More Power
Whilst July was clearly extremely sunny and warm this year, Solar Energy UK is keen to highlight that the new record has not been driven by the favourable weather alone.
For example, official figures show that 142,536 new solar installations were completed during the first half of 2026, making it the busiest six-month period for new installations since the end of the Feed-in Tariff subsidy era. Most of these were domestic rooftop systems, reflecting growing consumer interest in generating electricity at home as energy prices remain a significant concern.
Commercial rooftop installations on warehouses, factories and supermarkets have also continued to expand, although many are not fully reflected in official installation statistics because they often fall outside the planning system. Together with larger solar farms, they have substantially increased Britain’s overall generating capacity.
The figures also seem to illustrate how the economics of solar have changed. For example, falling equipment costs, improved panel efficiency and stronger financial returns mean that many installations are now commercially attractive without relying on government subsidies.
Building A More Resilient Energy System
The record also highlights an important sustainability benefit beyond simply generating clean electricity.
Unlike fossil-fuel power stations, solar panels produce electricity without releasing carbon dioxide during operation while reducing the amount of imported gas needed to meet daytime electricity demand. Every additional unit of renewable electricity therefore helps improve both energy security and carbon reduction.
Julian Leslie, Strategic Energy Planning Director and Chief Engineer at the National Energy System Operator (NESO), which operates Great Britain’s electricity system, said: “These new records show the increasing power of solar. It’s hard to believe how far Britain has come over the past quarter of a century, with renewables now producing around 60% of our electricity – up from just 3% in the year 2000.”
He added: “Enabling low-carbon technologies like solar to play their part in our energy future is critical to helping us on our journey towards building a cleaner energy future.”
Growing investment in battery energy storage is also making solar more valuable by allowing excess electricity generated during sunny periods to be stored and used later, helping smooth fluctuations in renewable generation while reducing pressure on the electricity grid.
A New Chapter For Rooftop Solar
It’s worth noting here also that the growth of household solar looks set to receive another boost later this month.
From 27 August, new legislation will allow plug-in solar kits to be sold legally in the UK for the first time. Unlike conventional rooftop systems, these compact panels can simply be plugged into a standard household socket, allowing people living in rented accommodation or properties without suitable roofs to generate some of their own electricity without major installation work. The systems are expected to cost around £400 and could save households between £70 and £110 per year.
Although these systems did not contribute to July’s record, they represent another example of how solar generation is becoming accessible to a much wider range of households.
At the same time, larger utility-scale projects continue to expand. Britain’s largest operational solar farm, Cleve Hill in Kent, is already generating electricity, while even larger developments remain under construction, illustrating that growth is occurring across every scale of deployment.
What Does This Mean For Your Business?
For businesses, July’s record demonstrates that renewable electricity is becoming an increasingly important part of the UK’s energy infrastructure rather than an occasional supplement to conventional power generation. As solar capacity continues to expand, organisations are likely to benefit from greater energy security, lower long-term exposure to fossil-fuel price volatility and continued progress towards national carbon reduction targets.
The figures also reinforce the growing commercial case for on-site renewable generation. Falling installation costs, improving battery storage and rising electricity prices continue to strengthen the financial case for businesses to invest in rooftop solar, particularly for organisations with large warehouses, offices or manufacturing facilities that consume significant daytime electricity.
Britain’s latest solar milestone also illustrates how sustainability and economic resilience are becoming increasingly closely linked. Greater use of home-grown renewable energy not only reduces greenhouse gas emissions but also helps create a more diverse and resilient electricity system that is less exposed to global fuel markets, providing long-term environmental and economic benefits for businesses and consumers alike.