Quote:
Originally Posted by accord1999
...solar typically doesn't produce electricity when you most need it.
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This is the biggest hurdle but a huge offset to this is charge an electric car during daylight.
Here's one study on solar payback I believe this is about 5 years old but good info.
Quote:
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Their energy payback times (EPBT)—the time it takes to produce all the energy used in their life cycles—currently are between six months to two years, depending on the location/solar irradiation and the technology. And with expected life times of 30 years, their ERRs are in the range of 60:1 to 15:1, depending on the location and the technology, thus returning 15 to 60 times more energy than the energy they use.
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