Minnesota Solar Sites Tripled Local Insect Population
Restoring native prairie vegetation at solar arrays boosted native bee counts twentyfold over four years.
Updated on Oct. 7, 2026 in Environmental
Live Poll
Should solar power companies be required to plant native vegetation around their solar arrays?
Researchers studying solar installations in Minnesota found that establishing native prairie vegetation led to a tripling of total insect abundance between 2018 and 2022. This retrospective analysis of the Atwater and Eastwood sites confirmed significant ecological recovery within the solar arrays.
Why it matters
The study demonstrates that solar infrastructure can function as a productive habitat for pollinators when managed with native flora. This approach offers a strategy to mitigate habitat loss while maintaining energy production on large industrial footprints.
Researchers logged 10,900 beneficial insects across 358 transect observations at the 77-acre total footprint. The sites, which include the 4-megawatt Atwater array and 5.5-megawatt Eastwood array, showed consistent ecological growth following 2018 seeding.
The players
Atwater solar site
A 4-megawatt solar installation in Minnesota that served as a primary research site.
Eastwood solar site
A 5.5-megawatt solar installation in Minnesota that served as a primary research site.
The details
Crews seeded ground between rows of solar panels with native prairie grasses and wildflowers to establish nesting areas and wind protection. Researchers used transect observations, or standardized paths through a site to count organisms, four times each summer to track population changes. These plantings replaced traditional ground cover, providing flowers and nesting ground that support native pollinators.
Timeline
2017: Construction was completed at the Atwater and Eastwood solar sites.
Early 2018: Native grasses and flowering plants were seeded at both locations.
August 2018 - August 2022: Researchers recorded 358 insect transect observations.
The Tech Race
This research positions solar energy developers as active participants in land-use conservation rather than just energy providers. By matching the biodiversity performance of the Conservation Reserve Program, these sites set a new benchmark for dual-use land management.
The findings suggest that state-wide solar projects in Minnesota could stabilize local pollinator populations near agricultural areas like soybean fields. Future utility projects may increasingly integrate native vegetation to meet land-use requirements and improve local biodiversity.
The takeaway
This study proves that industrial solar sites can significantly revitalize pollinator populations when seeded with native prairie plants. Readers should watch for future land-use policy requirements that incentivize or mandate native planting within renewable energy developments.
Further reading
For more on how infrastructure interacts with local ecosystems, visit the Environmental section.
Source note: This article includes information reported by Ecoportal.
Live Poll
Should solar power companies be required to plant native vegetation around their solar arrays?
