Green Roofs Improve Solar Panel Efficiency
Studies vary in the efficiency boosts reported, from 3% to 16%. This is in addition to green roofs’ known effect of cooling indoor air, which reduces annual energy use by 6%, according to a recent French study.
New designs for solar arrays allow water to drain evenly across the roof, and research suggests that the biodiversity created by including shade-tolerant plants below the panels can improve a green roof’s overall performance. A recent British study in Building and Environment found that broad-leafed plants such as lamb’s ear, which can thrive in partial shade, outperformed the traditional sedum in cooling the substrate and surrounding air.
Weaver, E. (2012, November 29). Green Roofs Improve Solar Panel Efficiency. Retrieved from https://www.buildinggreen.com/newsbrief/green-roofs-improve-solar-panel-efficiency