According to new research for solar energy experts at Uswitch, the run of record-breaking sunshine in 2025 translated into real money for solar households, with the average home solar system generating 5,226kWh of electricity.
That energy was worth almost £758 in combined bill savings and export income[2], £170 from power used directly in the home, and £588 earned by selling surplus electricity back to the grid. Collectively, that puts almost £1.21 billion into the pockets of the UK’s 1.6 million solar homes[2][3]. Households who are out all day mid-week currently self-consume just one in eight units (12.5%) of what their panels generate, with the remainder exported[2].
The picture looks noticeably better for households who are home during the day. Uswitch’s modelling shows a home-all-day household self-consuming closer to a quarter (24.7%) of what the same system generates, worth an estimated £842 in combined savings and export income over the year, £336 from self-use and £506 from export[2]. The gap between the two profiles underlines how much of solar’s value depends on when power is used, not just how much of it is generated.
Generation swung sharply with the seasons, peaking at 744kWh in May, during what the Met Office confirmed was the sunniest spring on record, before falling to just 126kWh in December, a six-fold difference between the brightest and dullest months of the year[1][2]. The exceptional conditions coincided with continued growth in UK solar adoption, with almost 182,000 new home systems installed in 2025 alone, adding 881 megawatts of capacity and pushing the number of solar-powered homes in the UK past 1.6 million[3].
Across the UK, solar households exported 443.1 gigawatt hours of electricity in 2024-25, earning £56.97 million in export payments[4], indicating how much value still sits untapped on British rooftops. With sunshine records being broken and panel costs continuing to fall, Uswitch is encouraging homeowners considering the switch to compare solar panel prices.
Ben Gallizzi, Uswitch solar energy expert said: “2025 has shown just how much value a genuinely sunny year can unlock for solar households, with the average system paying back close to £758 in savings and export income in a single year, and with 2026 picking up where it left off, that trend looks set to continue.
“And so far this year our customers have seen average savings of £964 off their annual bill when comparing solar panel installers at Uswitch.
“If sunny conditions like this become the norm rather than the exception, that value only stands to grow, and cheaper panels, bigger systems and rising battery adoption all point the same way.
“Batteries are worth a particularly close look if you’re out at work most of the day. They store what your panels generate while you’re away, so instead of selling that power back to the grid for a fraction of its value, you get to use it yourself once you’re home in the evening. For anyone who feels their solar isn’t quite paying off the way they hoped, that’s often the easiest fix.”
Uswitch’s solar battery guide has more on how they work and whether they’re worth it.
Learn more Uswitch.com
