Hello bllewis90,
Thank you for your question.
Looks like your question is related to getting a rebate from your utility company, not a tax credit from IRS. If this is so, the best person to answer this would be the utility company rebate customer service. The licensed contractors could be a good source of information but they are not the official source. Since it is you who is getting the rebate, it is reasonable to assume that you are responsible to provide all the needed documentation to the utility company and keep copies, should there be any questions in future.
Should your question be related to claiming Tax Credit on your taxes -
Hope this answers your question, if not, please do let me know.
Thanks again,
Yes, I was relating my question to the federal tax credit rebate only. It's just that somewhere, while browsing this forum, that I found a document outline that appeared to require confirmation from the utility company that the connection to the grid was approved. Then I lost track of it and could not find it again.