Solar Farms and Wildlife: UK Species and Habitat Guide (2026)

Solar farms across the UK are home to a remarkable variety of wildlife. National surveys coordinated by Solar Energy UK have recorded 94 bird species, 29 butterfly and bumblebee species, and 8 mammal species across 124 solar sites. Over 50% of surveyed solar farms host red-listed birds including skylark, yellowhammer, linnet, corn bunting, and nightingale. Brown hares, a species of conservation concern, are found on around 40% of sites, while the small heath butterfly and cinnabar moth have been recorded at multiple locations.

Research from the RSPB and University of Cambridge confirms that well-managed solar farms support up to three times more birds than intensive arable farmland. Lancaster University studies show bumblebee populations up to four times higher on sites managed as wildflower meadows. These findings reflect the fundamental change that occurs when land shifts from intensive agriculture to the low-disturbance environment of a solar farm, free from pesticides, fertilisers, and regular ploughing for 25-30 years.

This guide catalogues the wildlife found on UK solar farms, explains why these sites support diverse species, identifies which animals benefit most, and addresses concerns about potential negative impacts on certain wildlife like bats. Whether you are a conservation professional, a landowner considering solar development, or simply curious about what lives among the panels, this guide provides the complete picture.

Quick Overview

Birds on Solar Farms

Survey Findings

Conservation Status of Birds Found

Red-Listed Birds on Solar Farms

Amber-Listed Birds

Why Solar Farms Support Birds

Bird Abundance by Habitat Type

Mammals on Solar Farms

Species Recorded

Brown Hares

Small Mammals

Why Small Mammals May Be Under-recorded

Invertebrates on Solar Farms

Survey Findings

For a deep dive on the pollinator side of solar farm biodiversity, see our guide to pollinator-friendly solar farms – which covers bumblebee and butterfly management in more detail.

Butterflies

Bumblebees

Moths

Dragonflies and Damselflies

Why Solar Farms Support Invertebrates

Reptiles and Amphibians

Reptiles

Amphibians

Great Crested Newts on Solar Sites

Why Solar Farms Suit Reptiles and Amphibians

Bats: A Mixed Picture

Research Findings

Why Bats May Avoid Solar Farms

Mitigation for Bats

Automated Monitoring

Case Studies

Sawmills Solar Farm, Devon: Cirl Buntings

South Devon Solar Farm: Butterflies

East Anglian Fens Study

Wildlife Monitoring

Standardised Approach

Survey Methods

Future Monitoring Developments

Management for Wildlife

High-Value Practices

If you’re a farmer or landowner considering whether to host a solar farm, see our guide to solar panels for farms – it covers lease terms and the wider agricultural context alongside biodiversity management.

Management Categories and Wildlife

Seasonal Considerations

Concerns and Considerations

Potential Negative Impacts

Sites to Avoid

Pre-Construction Surveys Required

Water-based solar projects face a different set of ecological questions from the ground-mount sites covered here. Our guide to floating solar farms covers the wildlife and habitat implications for reservoirs and other water bodies.

Frequently Asked Questions

Basic Questions

Management Questions

Summary

Solar farms across the UK are proving to be important refuges for wildlife, particularly in landscapes dominated by intensive agriculture. The Solar Habitat 2025 report documented 94 bird species, including red-listed skylark, yellowhammer, linnet, and even the rare cirl bunting and nightingale. Brown hares, a species of conservation concern that has declined by over 75% since the 1960s, are found on 40% of surveyed solar farms. Nearly 3,000 butterflies and bumblebees representing 29 species were recorded, with bumblebee densities up to four times higher on well-managed sites.

The key to wildlife success on solar farms is management rather than the panels themselves. Sites managed as wildflower meadows with hedgerows and conservation grazing support far more species than those maintained as simple turf grass. The RSPB/Cambridge study found that mixed-habitat solar farms supported nearly three times as many birds as nearby arable farmland. This reflects the fundamental shift from intensive agriculture to a low-disturbance environment free from pesticides, fertilisers, and annual ploughing.

Not all wildlife responds equally to solar farms. While most groups benefit, research from the University of Bristol suggests bat activity may be lower at solar farm sites, possibly due to panel reflections confusing echolocation. This highlights the importance of mitigation measures including dark corridors, hedgerow connectivity, and maintaining links to known roosts. Ongoing automated monitoring trials at sites like Westmill Solar Park will help build understanding of these effects.

With over 50% of surveyed solar farms now hosting red-listed birds and clear evidence linking biodiversity-focused management to wildlife abundance, solar farms are emerging as accidental nature reserves. As the Biodiversity Net Gain requirement embeds long-term monitoring and habitat management into planning conditions, this wildlife potential is increasingly being realised by design rather than by accident.