New research shows how solar arrays can aid grasslands during drought

A new study from Colorado State University and Cornell University shows that solar photovoltaic (PV) arrays can do more than generate clean energy — they can help grasslands thrive during drought.

Over four years at Jack’s Solar Garden in Longmont, Colorado, researchers found that grass growing near the east side of solar panels was up to 90% more productive in dry years than grass in open areas. The panels provided shade that reduced evaporation and lowered soil temperatures, while also redirecting rainwater to plants beneath them.

“Those grasslands are even more water-limited than the ones we used in this study. Thus, we expect the capability of solar arrays to mitigate water stress may be even greater,” said Alan K. Knapp, University Distinguished Professor at CSU and co-author of the study.

For SCAPES, these findings are a powerful reminder that solar energy systems can be designed to support both energy and ecological goals — helping to boost forage, improve habitat, and build climate resilience.

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FULL ARTICLE HERE