About 5 percent of U.S. households have rooftop solar, a share that may seem like a lot, but it looks low compared to places like Germany (about 20 percent) and Australia (about 30 percent).
About 5 percent of U.S. households have rooftop solar, a share that may seem like a lot, but it looks low compared to places like Germany (about 20 percent) and Australia (about 30 percent).