“Adding solar panels and a battery to a new home can raise its cost by $20,000 or more. While that might not matter to somebody buying a million-dollar property, it could be a burden a family borrowing a few hundred thousand dollars to buy a home.

‘You’re going to see the impact in office rents. You’re going to see it in the cost of the milk in your grocery store,’ said Donald J. Ruthroff, a principal at Dahlin Group Architecture Planning in Pleasanton, Calif. ‘There’s no question this is going to impact prices across the board.'”