(Amazon)

This is the Refoss EM16 Pro/EM16P I’m using to see real-time electricity usage by breaker, and it’s one of the few options that fits nicely into a Home Assistant-focused smart home. The app is fast, and it makes it easy to correct things like a negative CT reading by adjusting the circuit factor.

Pros

+Fast, near-instant live power updates
+Breaker-level monitoring with multiple CT clamps
+Works over Wi-Fi with no hub required
+Can monitor energy both ways (usage and solar production)

Cons

-CT clamp orientation can cause negative readings (requires app adjustment)
-Labeling and organizing channels takes some setup time

Featured in 2 videos

Refoss App and Highlights of the Refoss EM16P Energy Monitor #Refoss #SmartHome #HomeAutomation

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I Looked Inside My Breaker Box and Found Where Our Electricity is Going (Refoss EM16P)

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(Amazon)

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Highlights

+Fast, near-instant live power updates
+Breaker-level monitoring with multiple CT clamps
+Works over Wi-Fi with no hub required

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Josh's Smart Home