Originally Posted by
Bart
I wrote my own (system); I have solar panels and a small battery from Enphase, and developed an app on a wall mounted tablet that communicates via WiFi every 2 seconds with the inverter to get some of the information (how much comes in/goes out of the house, how much the panels produce), and also with a micro computer with clamp over the battery cable to see the flow to/from the battery. I also ask my retailer (Flick) every 5 minutes what the current variable power price is (changes every half an hour), and with that I can produce an up to date picture, something that should really be provided by each solar system. I can immediately see when a cloud blocks the sun, when my partner switches the airco on, etc, plus how much approx I have spent on the day so far. And the system also automatically decides when it is a good time to switch my spa on, avoiding the morning and evening peak hours. I also write every minute a record to a remote database for long term reporting. All in all a nice hobby project, but it did take me quite some time to develop.