Montgomery County Energy InfoWIRE posted this important reminder:

Time is running out to take advantage of federal tax credits for energy-efficiency improvements.  The American Recovery and Reinvestment Act provides a tax credit for 30% of the cost or up to $1,500 towards specific energy-efficiency improvements for residential properties in 2009 and 2010.  These credits are slated to expire at the end of this year.  So if you have been thinking about that insulation job, heating and cooling system replacement, or new windows now is the time to talk to your local service and product providers.

If you are considering a solar or geothermal system, no reason to panic. These credits are slated to be available until 2016.  As always, consider consulting an appropriate tax professional regarding the eligibility of improvements.

The DOE Energy Savers Program has published a helpful fact sheet on the federal tax credits