AC Router / How to listen power consumption through mqtt

Hi,

Interested in AC router board with dedicated firmware, but when reading docs, it seems we can’t listen to external value. Here’s my use case :

PV with battery and inverter, 30m away from my house

Heating boiler will be in the house

I would like to publish through mqtt PV power, monitor house consumption with ac router and get boiler control inside the house.

Is that a known limitation ?

Thanks !