Haven't looked for a few months at Solar but the big thing on the Tesla solution is it looks around 50% more than standard panel but blends nicely, I'd be up for that ...
Shingles, hail resistant run around $100 to $160 / square standard price.
I'd resume other items such as underlayments, nails, etc are minimal deltas as similar is needed for a solar install
my roof had around 34 square and priced installed at an avg bid of around $14K or under $3/foot.
So the real question is ROI, presuming as reported Tesla is running 98% efficiency compared to standard 235/W panels, those ~ for me around 6KW system is around 20 panels, this around 38 sq ft of solar. This would add $8K or so, add the Tesla battery at $5500 or around the cost of my roof in total, depending on install costs.
nice thing with battery is you may not need to buy power back from the utility.
One needn't do the whole roof and in some cases, such as mine, a utility will only credit you on power buy back at a reduced rate and reduced more if you exceed your yearly average. here, I hear the state utilities will only pay 20% the rate paid on the first 100% average usage ... so, I'l limit to what I actually use + some head room.
What one needs is to be in an area where a % min of renewable is required, then get the community (new development would work well) to solar up the homes for the utility or local company with payoff being your energy is free.
Don't see this happening ..