Home energy savings
Nicor rebates - For making your home more energy efficient
U.S. Department of Energy's Compliance Certification Database - Mass list of rebates for heat pumps, furnaces, washer and dryer and so much more. Click on the All product groups drop down menu to search a category
Comed - smart energy rebates - even more energy efficiency rebates
Electric Vehicles
EPA - CEJA rebates
US Department of Energy
See Kane's website for more
Solar Panels
Homeowner’s Guide to the Federal Tax Credit
Energysage has a great breakdown of the rebates and Solar Renewable Energy Credits