Good analysis, so far. I'm considering re-roofing our house with Tesla Energy (TE) tiles so, here are my thoughts currently.
Does supporting documentation exist that ranks the cost of materials (composite shingles + underlayment + fasteners + solar panels + mounting hardware) vs the cost of solar roof (tiles + cabling + inverter hardware + grid interconnect hardware)? All this is moot if the supporting building structure can't carry the additional weight at the roof (older 2x4 vs newer 2x10 rafters).
As I see it, the labor costs between the two choices are likely radically different. A good old-school roofing crew can install traditional roofing in a day (two, if re-roofing), while the solar roof option installation takes considerably longer, due to interconnecting tile cables, collector-cable routing and fastening, electrical hardware installation, testing, etc. Both options require County building inspections, but I suspect the traditional roof inspection fees would be much lower due to inexperience with new technology vs proven repetative methodologies.
Then consider that TE must first acquire Underwriters Laboratory (UL) certification ($$$$ + time).
I'd love to hear this discussion, but maybe it should be on a different thread (TSLA market direction WILL be impacted so...).
As others have said - open fire!
[oops, I think our moderator has *spoken* while I was composing this. Sorry
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