[permaculture] Dept of Energy Discovers............the Sun

Lawrence F. London, Jr. lfl at intrex.net
Sun Feb 18 02:10:39 EST 2007

Toby Hemenway wrote:

> They're going to buy a 30 million dollar solar array for DOE? That buys a
> pretty dang big array. If there are 1000 people in that building, that's
> $30,000 for each person that they get off the grid. 

$30ooo is what it would cost to provide off grid power for a small family.

3 1000 watt Bergey windmills + towers
Photowatt Kyocera BP or other photovoltaic panels - maybe a 3000 watt array with mounting hardware
Bank of Rolls deep cycle 10 year guaranteed batteries (300 lbs each) + wiring
Trace 24 volt inverter, maybe a 48 volt system is available now
Service panel to connect house, well pump to power source at inverter
Underground drop from windmills and solar arrays (#2 copper)

For all this it could cost even more, maybe $35K-40K total cost for entire system less house wiring.
This is the top of the line pricey system but very durable and reliable with long service life;
no golf cart batteries.

And they want to spend $30000 per person, in a building-wide system, wen the government is getting
the equipment at wholesale cost?  What a ripoff for taxpayers.

Lawrence F. London, Jr.
Venaura Farm
lfl at intrex.net

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