Energy Incoming from Grid how to measure, Circuit Breaker?

Hello I was wondering of how to measure the income of energy into my house!
I have actually a very basic Energy meter from my energy company which i can not automatize.

I was wondering if I buy a Circuit breaker which measures Power and send the info Wifi or Zigbee to HAS… would work?
Installing it directly after the incoming circuit breaker which comes from the Energy company,
and capture this as over all consumption of energy.
Could I use this as overall energy consumption from the grid?

Than later see the overall energy consumption and see with the other sensors my consumption on each appliance from this overall grid?

example :
over all income from grid 300 KWH /Month
fridge - 90 KWH/moth
TV Home system -30 KWH/month

Open consumption : 180 KWH/Month not assigned

any help and suggestion is welcome

Have you read this Energy Management in Home Assistant - Home Assistant

You could also look at using a device with a CT clamp, eg https://www.amazon.co.uk/Aeotec-Energy-Electricity-Monitor-Consumption/dp/B017DV3URS

Hello thanks for the quick replay
Yes I had read the Home assistant topic, but it does not show me a solution I could use here in \brazil that’s why i was thinking of a WIFI circuit braker with energy measurement, if i would connect this directly after the incoming energy it should show me my total energy consumption correct?

Could i add the circuit breaker to the Energy Grid tab?

As long as you find something that is supported by an integration, eg Tuya, then in theory you should be able to add it quite easily.

I would be very wary of replacing the main circuit breaker myself and would rather go the non-invasive route like using a CT clamp.

I’m not sure if i understand how CT clamps work never heard of this before…
will try to google a bit on this

ESPHome Smart Laundry Notifications on an Electric Dryer - YouTube
Same concept, but on the main breaker, or you can you Emporia
Smart Home Energy Monitor with 16 50A Circuit Level Sensors | Vue - Real Time Electricity Monitor/Meter | Solar/Net Metering: Amazon.com: Tools & Home Improvement

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Hello thaks for the infos] so my question is I cant get the emporia ,
But I liked the idea, so I was looking at the Shelly EM , but was wondering if i need for each energy I wnat to monitor i need and new Shelly EM or can i add different CT clamps and i can see different energy consumtions, explaining myself better…

Want to monitor:
the incoming energy Directly from the grid
the consumption of the kids air conditioning
consumption of main room air condition
bed room air conditioning

So if i could install one equipment like shelly and have different cT clamps in my main energy board this could help…

Emporia have 2 main CT and up to 16 secondary CT’s. and it’s easy to integrate to HA. I have both, Emporia in my Electrical Panel and ESP32 CT combination for some of my devices for Automation. You can use Emporia for Automation also, but in my case some of the devices have a share breaker (not dedicated).
CT stands for Current Transformer.

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I went with 2 of these:

https://a.co/d/83rkAgI

They hit the sweet spot of relatively cheap and pretty accurate and easily integrate into ESPHome. Obviously you need to be comfortable handling mains power.

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I have ZMAI-90’s

Hello looking into these I like the idea , how easy is it to integrate into home assistant ,are they recognized automatically or do I have to do something ?

Emporia VUE is part of HACS. No problem to integrate this app to HA.

Well, they are good but, in my opinion, expensive. Whole set of Emporia is around $100 with 2 main and 16 secondary CT’s.

Where’d you find them for that cheap? That’s a pretty good deal!

Well, I am wrong, it’s $124, $164 but still for 16cT’s I think it’s cheaper then $18 for one of the other CT’s