Some Residential Energy Tax Credits:

Find out how you can save money through Federal tax incentives on your
purchase of a new hybrid, plug-in hybrid, lean-burn, alternative fuel,
or electric vehicle! https://www.fueleconomy.gov/feg/taxcenter.shtml

Biomass stoves qualify for the Residential Credit. A biomass stove
burns any plant-derived renewable fuel—usually wood, or pellets made
from agricultural crops or wood waste and other byproducts. If the
stove is efficient enough (the retailer should be able to show you
whether a particular stove qualifies), you get a tax credit for 30% of
the cost up to $1,500. Figure at least $2,000 for a stove that can
heat your house, but you can go as high as $4,000 or more. Through
2010

Geothermal heat pumps are similar to ordinary heat pumps, which use
outside air to help with heating and cooling. But geothermal heat
pumps have coils sunk into the ground to tap the heat just below the
earth’s surface. The feds will pay 30% of the cost of a system, which
runs $7,000 or more for an average home (file IRS Form 5695; the
credit is good through 2016).

You can get money back from the government if you add an
energy-efficient roof, windows, doors, insulation, or heating and
cooling equipment to your home. The tax credit is good for 30% of the
cost up to a cap of $1,500. The credit covers only the purchase cost
of the product, except for labor costs associated with upgrading your
heating or cooling equipment. The credit is good for improvements made
in 2009 and 2010.