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Consumer Tax Info:

HOME ENERGY EFFICIENCY IMPROVEMENT TAX CREDITS:
Consumers who purchase and install specific products, such as energy-efficient windows, insulation, doors, roofs, and heating and cooling equipment in existing homes can receive a tax credit for 30% of the cost, up to $1,500, for improvements "placed in service" starting January 1, 2009, through December 31, 2010. See www.EnergyStar.gov for a complete summary of energy efficiency tax credits available to consumers.

RESIDENTIAL RENEWABLE ENERGY TAX CREDITS:
Consumers who install solar energy systems (including solar water heating and solar electric systems), small wind systems, geothermal heat pumps, and residential fuel cell and microturbine systems can receive a 30% tax credit for systems placed in service before December 31, 2016; the previous tax credit cap no longer applies.

U.S. Department of Energy efficiency advice to home owners:
http://www.energy.gov/yourhome.htm

EPA an DOE Energy Star program information: http://www.energystar.gov/

Tax credits for consumers:
http://www.energystar.gov/index.cfm?c=products.pr_tax_credits#s1

IRS form 5695 needed for consumer tax credits:
http://www.irs.gov/pub/irs-pdf/f5695.pdf