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So yr saying the size of the roof/solar panel would not offer any significant battery charge. We need a smarter solar panel then. I think everyone said then same thing when those guys wanted to build an electric car…..nope can’t be done, yet 6 million teslas sold.I did the math a while back:
New owner questions
Hello everyone, I placed an order for a Model 3 about a month ago and I'm very excited for it to arrive soon. The estimated delivery window has changed many times but I did get my VIN today. I just read an article online today where a Model 3 owner made reference to having solar panels on his...teslamotorsclub.com
Sure, we need a more efficient solar panel. Currently they are around 24%, best case. A little search suggests the maximum theoretical photovoltaic cell efficiency is something like 60%( around 45% has already been demonstrated, which surprised me), but the cells apparently get quite heavy since they are layering different cells to get various wavelengths of light with each cell.So yr saying the size of the roof/solar panel would not offer any significant battery charge. We need a smarter solar panel then. I think everyone said then same thing when those guys wanted to build an electric car…..nope can’t be done, yet 6 million teslas sold.
And no way for Tesla to tap into this free solar power to recharge battery as of today. So they might be hope for the futureSure, we need a more efficient solar panel. Currently they are around 24%, best case. A little search suggests the maximum theoretical photovoltaic cell efficiency is something like 60%( around 45% has already been demonstrated, which surprised me), but the cells apparently get quite heavy since they are layering different cells to get various wavelengths of light with each cell.
The general rule of thumb is about 1KW per square meter (more or less depending upon latitude) so the solar power just isn't there. "Smarter" has nothing to do with it.So yr saying the size of the roof/solar panel would not offer any significant battery charge. We need a smarter solar panel then. I think everyone said then same thing when those guys wanted to build an electric car…..nope can’t be done, yet 6 million teslas sold.
In addition to the "constant" of 1kW of solar energy hitting 1 sq. meter (~10.8 ft²), the efficiency of photovoltaic solar panels today is about 20% so the effective power coming out is only ~200W.The general rule of thumb is about 1KW per square meter (more or less depending upon latitude) so the solar power just isn't there. "Smarter" has nothing to do with it.
I started a thread along these lines in 2011 and a bunch of folks chimed in like these:I did the math a while back:
New owner questions
Hello everyone, I placed an order for a Model 3 about a month ago and I'm very excited for it to arrive soon. The estimated delivery window has changed many times but I did get my VIN today. I just read an article online today where a Model 3 owner made reference to having solar panels on his...teslamotorsclub.com
Or a sun shade like many Tesla owners have.