Just did my taxes for 2010, I took advantage of the 30% tax credits for both solar and biomass. The $1500 cap biomass credit, is DEDUCTED from your solar credit vice added to for a total. ARE YOU KIDDING ME? This was nowhere in the info i read ahead of time.
Wait a second, can you explain that a little more? I have helped people to get their full tax credits, and it sounds like you are over-calculating.
You should be able to deduct 30% of the system cost from your total tax liability. This is a straight forward deduction. I got my 30% for the efficiency upgrades I did – took it right off the bottom line.