Messuring of Solar Power with Shelly for Pool Heater

[DennisB84]

Hi guys,

I'm using all kind of Shelly devices for various use cases.

One of the best use cases "was" to use the Power Messurement of the Output of my Balcony Solar System to switch the Solar Pool Heater on and off. Based on a threshold the heater was switched on and off.

Unfortunately I'm having a Solar System with a Battery now, which is always providing a fixed output to the A/C system of my house so I can't use the messurement anymore.

Now I'm looking for a solution to somehow messure the "Solar Power" to use it for my pool. I tried to use a Shelly 1EM and installed the clamp to one of the wires of one Solar Panel. Unfortunately it doesn't work because the reference is the A/C power and not the D/C output of the Solar Panel.

Maybe someone knows if I can use a Shelly device to messure D/C power cable although the device is connected to the A/C system. E.g. Shelly Plus Uni with some kind of a probe. 

(Sorry for any errors, I'm not a native English speaker)

Thanks in advance and best regards

Dennis