I am also interested in intelligent use of excess power. Currently I charge 2 EVs from my solar (it’s summer here…) but it’s manual, and I have to check every hour or so that the EVs are not sucking the residential system dry. Shelly, HomeAssistant and Victron are my solution components, but I have not got around to writing the automation.
Also nice for me: Shelly1 (and Shelly RGBW2) are approved in NZ so I can use them without fear of my insurer or a house buyer quibbling that I use them.
I guess you use the Shelly to interrupt the CP line of the EVSE for on-off control?
If you want to have the EV track the solar more precisely, there is a way with certain units such as Ohme: node-red-contrib-ocpp
I am not so advanced. Just a couple of 10a, 230v AC chargers. I would like to marry the potential solar supply to the EV batteries so we neither run down the house batteries nor waste solar power.
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