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1 Install a programmable thermostat to automatically adjust your home's temperature settings when you're away or sleeping.  When used properly, a programmable thermostat with its four temperature settings can save about $180 a year in energy costs.
A new twist on the home-improvement scam targets folks who want to cut their energy bills with rooftop solar panels or windmills. Solar energy, of course, can reduce your electric bill. But making the big up-front investment is the equivalent of paying for 30 to 40 years of electricity in advance.