There are several other Solar PV Modules, including one that uses the official Enphase API to download data.
However, I couldn’t get the Enphase API to work because for some reason I’m not considered the owner of the system to enable it.
So I decided to write a module that takes data directly from the Envoy-C gateway module on your network - so there is no cloud required here for this.
There is no official API for the old firmware running on my older Envoy-C gateway, so I parse the HTML to provide basic details
[card:emlowe/MMM-EnphaseEnvoy]