Log into MyEnlighten.
Access the Overview tab.
Your system Site ID is the number in the URL in the address bar of your browser.
In this example, the Site ID is 1321409.
(If you are a system owner using the Contact Us form, it is helpful to include your Site ID in your submission so we can access your system quickly, but your User ID is not required.)
If you have purchased a home with an existing Enphase system, you can assume ownership of the system by completing the Change of Ownership form here.
If your installer has just completed installation of your Enphase system, you can find out what to expect next on our Homeowner Welcome site here.