Thanks Earle for the reply. I ended up using MMM-json-feed and changing the source to match my feed. Works perfectly.
SolarEdge has a very nice API for their PV system. Would it not be nice to use it and add some relevant Solar Panel info (e.g. day, week, month, all time energy production) on the MagicMirror? I’m surprised there are no Solar monitoring modules in the list yet. Has anyone already built a module for SolarEdge? Can anybody help?