how much was it to instal? does it provide for all your power needs? do the solar panels wear out and need to be replaced?

Best answer:

Answer by rhsaunders
I have a friend who installed a photovoltaic solar system. It does not run the entire house all the time, but reduces the net power usage considerably. Solar cells don’t have a particular failure mechanism, so should last a long time. The primary problem with them is economic: a solar system costs about $ 10 a watt to install, and can deliver at most 2 kWh of power per year per watt of installed capacity — which, at present power prices, is worth about 25 cents. Which means that you would be better off leaving your money in a savings account. But subsidies for solar power facilities are available in many areas, and these may reduce the net cost to something reasonable.

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