I wasnt have any problems with the conversion. Just wondering if the quoted measure was GW or GWh, I mean the batteries are always quoted as GWh.
I dont know where you come from, but high-end roofs do not cost $5-$10k. 3 tab shingles on a small roof might be 5k. That same roof with tiles would be $10-$15k depending on the tiles. The market for these solar roofs is not those houses. It is the house with a 20-30k roof with Spanish tile or slate or wood shingles today, that needs a new roof and wants solar. Again, if you are selling a billion dollars in solar, it becomes 2 billion dollars in solar roofs for the same solar capacity, by selling the exact same number of jobs and solar cells. whether you are able to manufacture 1GW or 2 or 50. Its only limited by demand, which Elon has pegged at 5 million roofs a year for 100% market share. Obviously they wont get to 100%, but 10-20% might be something they can attain. 500,000 - 1,000,000 roofs a year at $30k average if you assume some smaller roofs and some much larger roofs. That's $15B-30B a year. Now granted that will require 2.5-5x the production capacity that they have today. How could they possibly achieve that kind of growth in production. Remember, glass is very easy to work with. Could see a process that is automated from end to end. I still think the average will be higher as I just got a quote for $36k for solar alone and I would assume at least $72k if I did the roof in tile at the same time. I wish I needed a new roof, as I would be 100% in on having the Fed pay 30% for my new tile solar roof.