I have a similar question. I bought my solar panel system in 2019 and cannot take advantage of the full 30% tax credit for this tax year.
I am thinking of selling my home in 2020, which leads me to believe that I cannot take advantage of the remaining 30% tax credit carry-over for the full year in 2020 since the home and the panels would change ownership to a new homeowner. Would this be the case? Can I still use the credit if I don't own the home for the whole year in 2020?
