An interconnection document is paperwork from your utility about connecting your solar system to the electric grid. The version that grants final approval confirms your system is allowed to operate, and lists details like your name, a few system specifics, your utility's signature, and the date approval was granted.

Depending on your utility, you may know this paperwork by several names — COC, Certificate of Completion, PTO letter, IACOC, or interconnection agreement. These are related documents in the same family, but they are not interchangeable: some grant final approval, while others (such as an interconnection application) are an earlier step. Which ones you receive depends on your utility.

Some states require a completed interconnection document before we can register your system for SRECs. It lets us confirm your system details, verify the date your system was approved to operate, and submit an accurate registration on your behalf.

ℹ️ An interconnection document is not the same as a net metering agreement. Net metering governs how your bill is calculated; interconnection authorizes your system to operate on the grid. If you send us a net metering agreement, we'll let you know if anything else is needed.

Our team reviews the document against your registration details. If anything is missing or unclear, we'll reach out — otherwise you don't need to take any further action. If you get a notice directly from the Maryland PSC, you can disregard it. We receive the same notice and follow up only if action is needed.