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der-neue avatar image
der-neue asked

Simulate energy meters with NodeRed?

Does anyone know a way to simulate an energy meter with NodeRed (Large OS)?

That must be theoretically possible.


Via Tasmota I get my yield from the PV system sent via MQTT.

Node-RED
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Bump!


8 just spent some time with what I thought was a solution but I can't read the delta between the energy meter and the load on the inverter.

I can read my emonpi energy use through mqtt into node red on largeOS.

I can subtract a safe number or you 'grid setpoint' in normal ESS

And I can feed a number from nodered into the ESS grid setpoint.

This was the manual process I was doing untill I get my CT clamp wired in.

Its so close, but without another number like the load on the inverter I can't see how it will work as my current method will cancel it's self out and not work.

Would be a super cool feature!






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tompeel avatar image
tompeel answered ·

Ok, I have an answer, ill test it for a few days and assess the quality and ill post the flow here!


although reading your comment you want an energy meter for solar... Im using an external CT senor Via MQTT to act as a Grid meter to keep the import to a low number via setting the GridSetpoint via the ESS node.

May not help you but I'm sure it will help others!


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