Here's an item I think is timely and topical
Some years ago, California adopted mandatory power sourcing requirements increasing in stair steps the percentage of utility supplied electricity that must come from so-called renewable or aka non-combustion sources. Touted as being part of that (whether it is or not), effective January 1, 2020, the building code requires that new residential construction include installed solar cells producing an adequate output for the size of the home.
It's more symbolic than anything because for decades to come or more, newly built housing will represent a very small percentage of the housing supply. Also, the scramble to meet the large utility-wide targets has resulted in an overbuilding of system-size solar plants. Such that for much of the year, a significant percentage of daytime system-sized solar produced power goes unused.
I don't doubt that it will take a while to sort things out. And hopefully better means of storage will come along to reduce the need for combustion produced electricity during hours of darkness and inclement weather.
It's a start.