Rocky Mountain Power is offering a rebate of 50 cents per square foot & Questar is offering a rebate of 95 cents per square foot for qualifying purchases. There is also a Federal Tax Credit available of up to $200 (10% of the purchase amount of up to $2000) as a residential energy credit for qualifying windows for the 2011 tax year. Check the IRS website www.irs.gov for a 2011 form 5695 to file with your 2011 1040 tax return. Or, just provide a copy or your work order to your tax preparer at year end.