California should make solar decisions with math, not a magic wand

Only 15 percent to 20 percent of new single-family homes built in California have solar panels, according to the California Building Industry Association, because 80 percent to 85 percent of homebuyers choose not to buy them.
So California regulators have decided it’s time to use force.
The California Energy Commission is set to vote Wednesday, May 9 to require solar panels on the roof of every new home constructed in the state beginning in 2020.
This takes a lot of pressure off the manufa