New research from Colorado State University and Cornell University shows that solar arrays can actively reduce drought stress in Colorado’s grasslands. By casting partial shade, the panels boost moisture levels and drive plant growth, especially in dry years. The study strengthens the case for using solar arrays to stabilize ecosystems while producing renewable energy.
Over four years at an agrivoltaics site in Longmont, Colorado, researchers tracked how solar panels affected nearby vegetation. They found that east-facing areas beside the panels produced up to 90% more plant growth than open fields during a dry year. In wetter years the impact was reduced, but grass production on the east side of panels still improved. The team concluded that solar arrays create microclimates that help grasses survive Colorado’s hot, dry summers.
This study builds on a growing body of agrivoltaics research, which combines solar energy production with land conservation. While panels limit direct sunlight, they also protect vegetation from extreme heat and can support plant diversity. With careful design, solar arrays can become tools for both energy resilience and environmental recovery.
