A data point from another new state, Hawaii:
My sister visiting from the islands mentioned that a solar roof was being done in her neighborhood, only the 2nd on Oahu, according to the installing team. (credible, as I found recent articles from 2021 mentioning the first solar roofs on neighbor islands Kaua'i and BIg Island as well). Hawaii is a bit unique, as they're training their first installers on the job, since they can't bring in teams from other states, and these teams obviously will be dedicated to the state for the same reason. Prob also for that reason, the project also went fairly slowly, after old roof tear-off at least 5 days with a large team to install the solar roof. Generated a lot of curiousity from the neighbors seeing the Tesla logo on the building materials (I think on the underlayment?), as well as the shiny glass tiles.
Her neighborhood is typically about 2000 sq ft homes both single and two-story; total price according to the owner is about $100K for the solar roof. The tropical sun is pretty harsh on roofs, most in the neighborhood long ago already replaced their 1970's-era OG wood shake roofs with more durable cement or clay tile, so the longevity of the solar roof is a huge benefit. A new tile roof alone would've cost about $30-35K, so with the federal tax credit, about half of the price can be attributed to needing a new roof anyways - so say about $50K for the solar cost of the roof, as opposed to solar panels. Not sure how many active tiles or solar watts for that price - premium product for sure, but labor in Hawaii can be expensive as well. For comparison, my sister paid about $3.80/ DC watt for panels about three years ago, before Tesla did their big price drop on panels.
No sign of Powerwalls on this project, though my sister and other neighbors were not knowledgeable enough to ask. Most of her area is undergrounded utility lines, so less prone to outages, but I do remember the occasional outages during major storms/hurricanes and flash floods from my childhood. But another benefit to Powerwalls for Hawaii is load-shifting - there is so much solar that HECO (the local PoCo) in had not only reduced NEM but even blocked installs by disallowing sending excess energy to the grid. Claim was grid instability - that even passing clouds were causing neighborhood grids to suddenly jump up and down in instantaneous demand. You can get nearly 12 hours a day of sun all-year round in Hawaii, but if HECO only credits pennies for excess production, in one of the most expensive electricity regions in the country, the Powerwalls can pay back pretty quickly.
