If you are an Enphase Installer looking to access Enphase systems' data, the Partner plan is the right one for you. Sign up to the developer portal, add a credit card to your account, and create a partner application by providing your Enphase cloud credentials.
Partner plan provides you access to all the endpoints available on the portal for your installed and maintained systems. Generate access and refresh tokens using the application and Enphase cloud credentials. Refer to the quick start guide for more details.
For any queries, please reach out to api@enphaseenergy.com