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]

I wrote a new module MMM-AutelisPentair to display information about the status of my pool system, pulled from my Autelis Pool Control box.

I really don’t like parsing XML, so I convert the XML to js using xml2js, which you need to install (npm install xml2js)

In theory you can also control the pool using this interface, but I haven’t done that - this is display only

Not everything is presented, since I don’t have some of the equipment (like IntelliChlor)

[card:emlowe/MMM-AutelisPentair]

-Earle

That is an early look at @Sean 's upcoming module MMM-calendarExtDays.

He is about to release an updated version under a new name - look on the forum here for MMM-calendarExtDays

-Earle