The number of hares seen on UK solar farms has jumped by 68% in five years, a creature that has all but vanished from neighbouring arable fields. Surveyors from the British Trust for Ornithology, working across 124 sites, counted the animals sprinting between panel rows, as reported by ecoportal.net. The finding is not an ecological curiosity, it is a direct lesson for the 1.2 million UK households now considering solar panels.
Why hares thrive where crops fail
Solar farms occupy about 0.1% of UK land, according to Solar Energy UK. Most are planted with grass and wildflowers between the rows, not sprayed with herbicides or ploughed twice a year. That creates what ecologists call ‘passive rewilding’, a habitat that brown hares, which need tall grass for cover and open ground to run, find ideal. The catch is that this only works if the land is managed for biodiversity from day one. A solar farm built on concrete hardstanding or covered in gravel will not attract a single hare.
What this means for your home solar system
For the average UK homeowner, the link is not about owning a solar farm. It is about design. A ground-mounted array in a garden, say a 4 kW system costing £6,000–£8,000, can be set in a wildflower meadow rather than mown turf. The Energy Saving Trust notes that such planting can reduce soil temperature around panels by up to 3°C in summer, improving efficiency by roughly 2%. More importantly, it qualifies the installation for some local authority biodiversity grants, councils in Oxfordshire and Devon now offer up to £500 for ‘solar-friendly’ planting schemes.
EPC impact and the bigger picture
Solar panels alone lift a typical 3-bed semi from EPC band D to C, adding about 5 points. But the government’s forthcoming Future Homes Standard, expected in 2025, will require new builds to include ‘biodiversity net gain’ of at least 10%. Homeowners who retrofit solar with wildlife-friendly landscaping may see their property’s desirability, and value, rise faster than those who install panels on bare gravel. Ofgem has not yet mandated biodiversity scoring for the Smart Export Guarantee, but industry sources say it is under discussion.
Yet the real lesson from those 124 farms is simpler: solar generation does not have to sterilise land. The hare is proof. Homeowners should treat their own installation not as a sterile energy machine, but as a habitat opportunity. The panels pay back in 15–20 years. The wildlife pays back immediately.
Frequently Asked Questions
Wildflowers can actually help. Research from the University of Reading found that a grass-and-flower sward keeps panels up to 3°C cooler in summer, boosting efficiency by around 2%. Just avoid tall species that cast shade, stick to low-growing mixes like bird's-foot trefoil and yarrow.
Some local authorities offer small grants, typically £200–£500, for planting wildflower margins or installing bee bricks alongside solar arrays. The Energy Saving Trust has a postcode search tool for local schemes. National grants like the Boiler Upgrade Scheme do not yet cover biodiversity, but the government's Environmental Land Management scheme may include solar-plus-habitat options from 2026.
