As somebody who has installed rooftop solar in California in two houses I owned, I think this is a bad idea. Mandating solar solution means the one you get with

As somebody who has installed rooftop solar in California in two houses I owned, I think this is a bad idea. Mandating solar solution means the one you get with the new house would be the cheapest (and therefore crappiest) money could buy and an inspection could pass. Most consumers have no idea how to evaluate solar panels, and most would not walk out of a good deal because of solar panels. Which means huge incentive for homebuilders to cut costs. And once you've got it, you are stuck with it - replacing is would have huge costs. And, of course, I have pre-pay it with my mortgage. Instead, I'd very much like to choose a provider by myself, with a good reputation, and choose what kind of deal I can get on it, what are payment options, etc. There are a lot of options on the market. Pre-packaging the deal cuts off these options and takes the decision from me - unless I build the house by myself, I will no longer have an option of negotiating and choosing these things independently from the house itself.