The UK has achieved another major clean-energy milestone, adding an impressive 1.9 GW of new solar capacity between October 2024 and October 2025. This 10.4% annual increase pushes the nation’s total installed solar capacity to 20.7 GW, reinforcing Britain’s position as one of Europe’s fastest-growing solar markets.
A significant part of this momentum comes from the rapid expansion of large-scale, utility-level solar farms. July 2025 saw the landmark launch of the 373 MW Cleve Hill Solar Farm, now the largest in the UK, symbolising Britain’s growing confidence in home-grown renewable energy. While around 70% of installations across the country remain small-scale domestic systems, it is these major ground-mounted solar projects – supported by schemes such as Contracts for Difference and the Renewables Obligation – that now deliver a substantial share of the nation’s clean electricity.
To give readers a sense of scale, the 1.9 GW added in the past year could produce roughly 1.8 terawatt-hours of electricity annually. That’s enough to power around 520,000 homes – more than half a million British households running entirely on solar energy. It’s a powerful reminder of how quickly the UK’s energy landscape is shifting.
Consumers are also set to benefit from recent government reforms. By shifting the historical costs of legacy renewable-support schemes from electricity bills to general taxation, typical households could save around £100 per year. This makes Britain’s clean-energy transition not just environmentally responsible, but economically positive for families too.
With a strong pipeline of approved solar farms – many in the hundreds of megawatts to multi-gigawatt range – the UK is now firmly on track for sustained solar growth. The combination of technological progress, supportive policy, and increasing investment paints a bright picture: Britain is steadily becoming cleaner, greener and more energy-secure, powered by its own sunlight.
