Quote:
Originally Posted by ConnClark
electric cars are about as efficient as gasoline cars, but coal is cheaper than gasoline.
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I'm having trouble following this... The charging efficiency of lithium is like 99%. Solar cost me around $3500 for 5.6kW. There were a few hundred extra dollars for the frame. The inverter can power about 16 houses (well, it's good to around 160kw) and is like 99% efficient at peak power. The MPPT charge controller will also do around 160kW. It's over 99% efficient at max power. Both of those cost less than $1500 to make each. That's like $100/house. The multicrystaline cells have gotten so much cheaper. You can regularly buy the panels for around $0.60/watt. Assuming a 3 phase motor, you can get over 90% efficiency. How do you get to the equal efficiencies?