U.S.A — Millions of U.S. homes may see a loss of power during the eclipse on Aug. 21. <br /> <br />The astronomical event may cause a loss in solar energy production enough to power some 7 million homes, reports Bloomberg. <br /> <br />According to U.S. government data, California provides 40% of the solar energy in the U.S. The state will see its solar power generation capacity reduced by 70% between 9:02 a.m. and 11:54 a.m. local time on the day of the eclipse. The loss will also vary across the rest of the U.S. <br /> <br />To fill the power gap during this time, solar reliant grids may turn to natural gas plants and hydro plants for energy, reports Vox.