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Step by step guides and video. Cut energy costs to bill http://gogonai.com/home-solar-generation enri patuly Marketing http://tinyurl.com/7hou5t
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But so many unanswered questions!!!!!!
1) Living where there is sufficient sun? How many days per year? 2) Cost of batteries to store power during day for use at night etc.? 3) First cost of solar cells? Even if at one dollar per watt probably a first cost of $3000 or so? If solar cells cost five dollars per watt then $15,000? 4) If self installing; cost of inverter to turn battery electrcity into usable AC 'mains type' electrcity? 5) other costs, wiring etc. 6) If planning to sell surplus power, produced by solar, back into local electricity grid; what rate will power utility pay. 7) One estimate; to produce any appreciable amount of power in a suitable climate ranged upward from $10,000?
A local ad. here showed an 180 watt solar panel selling for $800, on sale. Since it s frequently cloudy here that might produce, say 90 watts-per hour, during the day, some days. That's not enough to warrant large expenditures. For each $1000 of outlay, one can buy a third or more of a year's electricity and that includes heating of this all-electric four bedroom home in a cool climate with a long winter.
Contrary opinions welcomed.
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A 6KW system for a home costs about $48K. This means that it is totally unviable compared to other electricity generation options. The only way it becomes viable is for the govt to hand out more money to get you to install one. After the gov pays for around half of the cost, then it can make economic sense for the homeowner. For the taxpayers, it's a loser.
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A 6KW system for a home costs about $48K. This means that it is totally unviable compared to other electricity generation options. The only way it becomes viable is for the govt to hand out more money to get you to install one. After the gov pays for around half of the cost, then it can make economic sense for the homeowner. For the taxpayers, it's a loser.
In general, people aren't stupid. If solar energy was cost effective, we'd all be tripping over each other to get it.
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It's very cost effective on my boat!
I'll bet there are lots of other places where it is cost effective.
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My point exactly, in the scheme of electrical usage, your boat isn't even on the meter

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There are many places where power lines don't reach.
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And for those that need real electricity in those locations, God created diesel generators

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RBM wrote:

It's not just "cost effective," it's generally impossible.
The amount of radiant energy falling on the earth is 120 watts/sq meter. At the equator. At noon. With no clouds. Adjusting for latitude, 12 hours of darkness, clouds, and time of day, one would average about 1/3 the maximum, or 40 watts/sq meter. An 1800 sq ft house would capture, then, (assuming 70% efficiency of the solar collector) 560 watts, or about 1/2 kw.
That's enough for one light bulb (non-CFL), and one TV or one computer. Forget about the fridge.
You can nibble at the margins, but you can't run this country - or an average house - off of sunbeams, irrespective of the cost.
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wrote:

Yet, people somehow are able to do it, even though you say it can't be done.
Also take into account that people who do this, are likely very interested in the subject of alternative energy, and may have taken other measures to both conserve and produce power. Solar works quite well for heating water in many places. Another really impressive technology that DOES have a reasonably good ROI despite high initial cost, is geo-thermal.
Photo-voltaic's don't have to be a complete solution in order to be a worthwhile proposition. What's the ROI on your car? Is it at least the most cost efficient car you could possibly own? Is it as cheap as taking mass transit? If not, then I guess using a car for transportation isn't economically feasible.
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On Apr 7, 10:33am, snipped-for-privacy@dog.com wrote:

1000W/sq meter

You'd do good at 20% conversion efficiency and 1/3 is optimistic.

Some have no choice (built off grid) and fools live everywhere.

The ROI on my car is quite good, actually (something like 2,500%). It allows me to go to work every day.
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wrote:

You just failed basic economics - Very badly.
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On Apr 7, 12:30pm, snipped-for-privacy@dog.com wrote:

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Wonder if solar is too expensive for the W.Va. coal miners ?
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Or the 115 Chinese coal miners rescued recently after 8 DAYS in a flooding mine? And the 33, or more, being sought! And with their control of their media one knows that such 'bad' news is not propaganda!
But while 25 the miners in W.Va. has been mentioned every hour on every North American network not a word about the Chinese one!
And then later on there'll be a few comments about the 'Poor safety record' of Chinese mines and few 'tut-tuts' about cheap labour industry.
While the W.Va mine had ................ what was it, yes probably higher standards, ............ but 120 safety violations?
Where IS government when really needed? Possibly being lobbied in Washington or the state capital?
Just a minute let me check on international news on the internet for the latest on the Chines incident. And I'll post here.
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Roundup: Foreign press lauds China's rescue efforts in coal mine accident Wednesday, April 07, 2010 3:26 AM
BEIJING, Apr. 7, 2010 (Xinhua News Agency) -- After more than 190 hours of continuous hard work and scientific rescue operation, 115 of the 153 miners trapped in a flooded mine in northern China have been pulled out alive. The rescue operation not only represented a miracle of life, but also marked an unbelievable achievement in China's history of disaster relief.
In recent days, the story of the Chinese government's all-out efforts to save those trapped miners received extensive and positive coverage in a number of major media organizations in Russia, the United States, Germany, France and other countries.
Other sources, AP and MSNBC, AL Jazeera (English), France TV etc.
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terry wrote:

MSNBC covered it.
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On Apr 7, 12:30pm, snipped-for-privacy@dog.com wrote:

Photovoltaics suck for the average home. On the other hand solar powered water heater and direct heating of your home with solar energy can be very efficient. One study on using photo cells to power a home failed miserably. Trees had to be cut away so light could get to the solar panels. This increased HVAC usage by more than the solar panels could provide. Im not sure which university performed this test but it was in Fl. Shouldn't be hard to find if you want to look it up.
Jimmie
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On Wed, 7 Apr 2010 09:49:45 -0700 (PDT), JIMMIE

I think you just made that up.
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Why, because YOU didn't think of it? You are SUCH an asshole! Even at 70 psi, you *should* be able to power that bicycle air horn with yer ass....
"TRUE" or not, jimmie's post raises a very inneresting point about trees/shade, etc.
Did you google thoroughly to assure yourself that jimmie's assertions were NOT true? Or is jerking yourself off *and* typing with the other hand too slow?
PV's *can* be used to effectively power a home, but it's not trivial, and it's big total $$, not just for the PV's, but for the surrounding infrastructure -- batteries, inverters, grid tie-ins, wiring, roof installation, you name it. Ditto windmills.
Also, ito the green factor, altho PV's would appear to be idyllic, it's not well known that the manufacture of virtually all solid state stuff is one of the most chemically insidious processes in manufacturing, definitely non-green.
Which is why all this stuff is made overseas, where the rivers literally bubble from pollutants.
--
EA




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