Commercial

Someday solar roofs may become as ubiquitous as the conventional asphalt roof. In the last decade, solar has enjoyed an average annual growth rate of 42%. Fueled by federal policies like the Solar Investment Tax Credit, steadily declining costs of solar roofing products, and burgeoning demand for clean energy, growth has reached approximately 100 gigawatts of solar capacity installed nationwide, enough to power almost 20 million homes. Solar roofing is eco-friendly. Achieving a "critical mass" in the popular use of photovoltaic roofing alternatives can lead to a major reduction in hydroelectric or fossil fuel consumption. Solar has ranked near the top in new electric sources for several years running. In 2020, 43% of all new electric capacity came from solar, the largest such share in the history and the second year in a row that solar added the most generating capacity to the grid. Solar's share of total U.S. electrical generation reached 4% and continues to rise.