I'm glad to hear this. My wife and I have been telling each other for years now that every house should have at least a handful of panels (preferably installed in the most efficient way).
While I expect that many installs will indeed tick the "mandated" box, I think most builders will see an up-sell opportunity, so you'll end up getting larger systems when buyers are either well educated or well persuaded.
Obviously, with the system we have, we're big proponents of PV - no electric bill for over 9 years now; no fuel bills with my car for 9 years and a very minimal fuel bill with her car for 5.5 years (around 6 gallons annually); plus we even get a small check from the utility for overproduction every year, and we don't skimp on what we use at all. What's not to like?
Yes, PV was a quite expensive proposition back in the day, but with the way we've used it a 100% ROI has come very quickly, and the system still produces very close to what it did when first installed. With the more affordable systems available today, along with rising utility rates, I can't imagine anyone NOT wanting to install PV.
PV and EV are probably two of the best decisions I ever made.