Record Spring Sunshine Drives 42% Boost in UK Solar Generation:
Spring 2025 was the UK’s sunniest on record, driving a 42% surge in solar energy generation, with average temperatures surpassing the previous high set in 2024. This marks the hottest spring since records began in 1884.
Between 1 March and 31 May 2025, the UK recorded 653 hours of sunshine—the highest for any spring since records began in 1910, according to the Met Office. UK sunshine hours have been on an increasing trend, particularly since the 1980s:
New data shows that solar generation rose by 42% in the first five months of the year compared to the same period in 2024 —one of the largest year-on-year jumps in the past decade.
This increase meant solar met more than 10% of the UK’s electricity demand during April and May, reducing the need for imported gas and cutting an estimated 6 million tonnes of carbon emissions. The UK’s total installed solar capacity has now passed 20GW, with further growth underway.
Source: https://www.carbonbrief.org/analysis-uks-solar-power-surges-42-after-sunniest-spring-on-record/
For commercial energy users, these figures highlight the increasing value of solar as a reliable, low-carbon power source.
We work with businesses across sectors to deliver tailored commercial solar solutions. If you’re looking to cut energy costs and improve sustainability, now is a smart time to explore what solar can do for your operations.
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