- On a bright sunny day, the sun shines approximately 1,000 watts of energy per square meter onto the Earth’s surface.
- PV cells produce no air pollution, hazardous waste, or noise, require almost no maintenance, and last for about 30 years.
- Solar hot water systems are less expensive and pay for themselves more quickly than solar systems for electricity – typically in 5-10 years.
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The facts listed above were found in various books, articles, and web sites that seemed credible and reliable, and also contributed by members of the network.