I don't have a link at hand, but there is a company offering a metal-roof-based solar roof product at about half Tesla's price. My limited understanding is tha

I don't have a link at hand, but there is a company offering a metal-roof-based solar roof product at about half Tesla's price. My limited understanding is that it looks like a metal roof -- said roofs having been growing in popularity. I guess I should add that, as best I recall, they have not yet actually launched consumer sales, although I believe they did/do have a working product. (Good, and properly installed) Metal roofs (non-solar) are... I seem to recall from 5 or 6 years ago, about twice the price of an asphalt shingle roof. But, good quality and properly installed, they can last 50 years. If this Tesla substitute were to have a similar lifespan and electrical output comparable to Tesla's or at least enough for self-sufficiency, I could see paying for it. Perhaps a principal problem/consideration being how far technology will advance during that time and will it be desperately obsolete long before then. The other being, will the company be around to provide needed support for anything like that timeframe?