i.e. make sure you've entered every scrap of your income first.
If your Std or Itemized deductions reduced your taxable income to a zero, without the solar credit, then you aren't suing it.
Also, there are some credits that are used before the solar one...because the solar can carry-over, certain "refundable" or a few "non-refundable" ones that don't allow a carryover, those are applied first.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
