You can offset the emissions caused by your energy use, no matter where you live...and in the USA it's even tax deductible!
Download a copy of the energy prices and emission factors used for this web calculator.
Note: If the calculator is not working properly, you may need to enable active scripts by clicking on the yellow bar at the top of the page and selecting "Allow Active Content." Do not use commas. Mercury factors are not available for DC, ID, RI, SD, VT.