The UK solar industry achieved a significant milestone in the first half of 2025, with solar power generation increasing by an impressive 32%. This surge, driven by a combination of new capacity and favorable weather conditions, resulted in a total generation of 13.4 TWh, a substantial increase from 10.1 TWh during the same period last year. This performance aligns with broader European trends, as highlighted by a report on PV Knowhow showcasing a similar surge in solar electricity generation across the continent. 1
Solar Energy UK, the trade association for the solar industry, reported that solar power accounted for 6% of the UK’s total electricity generation during this period. They attribute this growth to the combination of increased solar capacity and favorable weather conditions. This growth builds upon the momentum from 2023, where solar energy played an increasingly vital role in meeting UK electricity demand. 2 Furthermore, as reported by PV Knowhow, the UK’s solar deployment reached 18 GW in early 2025, demonstrating the continued expansion of solar infrastructure. 3
The Future of UK Solar Power Growth
The latest National Grid ESO Future Energy Scenarios report underscores the vital role solar energy is expected to play in the UK’s ongoing energy transition. This transition is further supported by government initiatives and investments aimed at bolstering the renewable energy sector. While challenges remain, such as the recent cuts to certain community solar programs highlighted by PV Knowhow 4, the industry continues to demonstrate resilience and growth. The recent announcement of SolarBank’s 2.9 MW community solar project in Gainesville, New York, utilizing American-made solar panels, exemplifies this ongoing commitment to expanding solar energy access and supporting domestic manufacturing. 4 This project, providing clean energy to approximately 340 homes, showcases the potential of community solar models to broaden access to affordable renewable energy. The UK’s progress in solar energy generation signifies a positive step towards a more sustainable energy future.