By the Numbers: Federal funding for weatherization eclipses cash for clunkers for appliances money

$4,728,750,000

Money allocated to the U.S. Department of Energy's Weatherization Assistance Program under the 2009 Recovery Act. To date, the program has doled out about half of its multibillion-dollar funding for a variety of weatherization projects, such as properly insulating an attic.

New York tops the WAP recipient list with $394,686,513, followed by Texas ($326,975,732), Pennsylvania ($252,793,062), Michigan (243,398,975), and Illinois ($242,526,619).

The nearly $5 billion is a boatload of money, but if spent wisely it could go a long way toward saving millions of Americans money and helping the environment. A recent report from Harvard University's Joint Center for Housing Studies estimates that residential energy use would decline by 22.5 percent if the roughly 120 million homes built before 2000 were made as efficient as those built since then.

Perhaps that potential significant impact explains why federal weatherization money so far exceeds that given to the $300 million State Energy Efficient Appliance Rebate Program, also known as cash for clunkers for appliances. Visit the Energy Star Web site for information on special offers and rebates for appliances, heating and cooling equipment, water heaters, and the like, and find out how much money your state has available for rebates, weatherization programs, and more.

You'll find more information on other federal and state energy-efficiency programs on the Database of State Incentives for Renewable Energy Web site.—Gian Trotta | e-mail | Twitter | Forums | Facebook

Essential information: Our Energy Saving & Green Living guide can help you cut your carbon footprint and save money. Follow our overall advice for using less energy at home, and remember that some projects might qualify for federal tax credits.