Fill out the right part of Form 5695
What type of system did you install? If it’s one of the following, complete Part 1 for Nonbusiness Energy Tax Credits.
Max credit: 30% of the cost of the improvement, up to $1,500.
If you installed one of these souped-up systems, complete Part 2 for Residential Energy Efficient Property Credit.
Max credit: 30% of the cost, with no limit except for a kilowatt limit on fuel cells.