quote:
Electricity from small or medium-scale solar installations, such as those on homes or businesses, costs around 12 to 30 cents per kilowatt-hour, but these prices should continue to drop thanks to falling installation costs, accessible, low-cost, long-term financing, and a healthy number of incentives and tax packages offered by nearly every state government.In order to have a system that actually accomplishes something, an electric car would have to employ a battery at home that collects the electricity during the day, and then downloads it to the car once you get home at night. The cost per kilowatt hour would have to be on the 12 cent range for this to have any economic advantage.
If you sell directly to the grid, this just causes others to have to subsidize it because the sun is not always shining.
As a consequence, having to download from one battery to the other will cause a loss of efficiency---maybe about 25%.
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