One can look at the example of Germany, which has the most expensive electricity in the EU, and California as well. While building a solar farm is cheap, the cost of the electricity produced.... When you flick the switch, you're not just getting solar energy. When the sun goes down you're usually getting natural gas-fired energy. Those plants are not being run as efficiently because it's like stop-and-go traffic instead of highway driving for the power plants backing things up.
