Price drops in Germany for electricity as a long term trend. The blue line is price and the columns are solar electricity capacity. This is matches up with increased use of solar power. 80% of the installed panels are on rooftops. Houses in California have higher resale when they solar panels installed. Perhaps because of fear of rolling blackouts. Germany has complicated of incentives designed to trail off as the technology becomes more widely implemented, kind of like a dutch auction. Germany is an good case study for the US. It has basically no oil fields, so it must make something out of nothing energy wise. Still this only about 3.2% of Germany’s electrical use.