Solar power: Installing a solar power system at home can be a good investment - chicagotribune.com: "His gas use has dropped more than 50 percent, and his electricity use has dropped about 70 percent. He sells extra power back to the electricity grid and sells renewable energy credits, which investors buy and trade to support renewable energy projects.
His return on his investment is about 3 or 4 percent a year.
'Some people say that's a slow return,' he said. 'But I'm willing to bet utility costs are not going down in the next 10 or 15 years. There's very little risk. I'm glad I made the investment.'"
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