The IRS reminds taxpayers that certain energy credits are
still available. If you haven't already taken advantage of them, this may be
the year to make energy-efficient improvements to your home. You may be
entitled to a credit of 10% of the cost of certain energy-saving improvements
such as insulation, windows, doors, skylights, and roofs. The credit has a
maximum lifetime limit of $500; the credit for windows is limited to $200. Not
all energy improvements qualify, the IRS cautions taxpayers, so be sure you
have the manufacturer's credit certification statement (usually available with
the product's packaging or on the manufacturer's website).