@pnishinaga wrote:
I have 13 panels I had installed in 2018 which I received the tax credit on. If I add more panels now, can I claim the tax credit for the new panels as well?
The Federal Credit is per installation. If you install new panels, you will be eligible for a new 30% credit. It is unclear if "new" includes replacing damaged or worn out equipment, you should consult a professional if part of your job is repair or maintenance for the existing system.
For the New York State credit, there is a maximum of $5000 allowed per residence. If you claimed $4000 before, you maximum new NY credit would be $1000.
Because there are several add-on users to the original question, it is not clear which part of the question you are asking.
