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Originally Posted by oil pan 4
You could build a battery boost trailer and put say several 213 watt pannels on it.
Only problem is the battery boost trailer would very expensive and each 213w panel that only collects about 1kwh/day would add about $500 to the cost?
(I am not sure what they cost these days, not too long ago it was about 3 cents per watt)
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Boy, I wish it was 3 cents / watt!!
Currently it's about $0.90 to $0.70 per watt (see the trend at
Daily chart: Pricing sunshine | The Economist). It's projected to drop to $0.36 per watt by 2017 (see
Forecast: Cost Of PV Panels To Drop To $0.36 Per Watt By 2017 | ThinkProgress)
So ya, today a 250W panel would run about $240 in single quantities, and closer to $200 if bought in a pallet of 26. For (roughly) $500 worth of 250W panels in my area (~4 to 6 sun hours per day) with 80% efficiency, it'd be possible to generate 500 * 5 * .8 = 2kWH a day. Hmmm... not gonna help all that much for charging up that EV if these figures are true:
Quote:
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EVs typically can travel 3-4 miles (or more) per kWh of electricity.
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(from
Can I charge a plug-in car with solar or wind power? | Plug In America)
So using solar panels to recharge the EV using a trailer probably wouldn't make sense unless you could get A LOT of panels on the trailer... or you get some high capacity ones (I've seen 400W panels, though the price per watt is higher)