Meross EM16
#1 in Circuit-levelFull review
A Refoss-class local monitor under the Meross name, a little cheaper.
Amazon $189.99$189.99
16Local + Home Assistant±1%
A home energy monitor clamps split-core current sensors (CTs) around the wires in your electrical panel and reports how much power the house, and sometimes each circuit, is using. These rankings cover panel-mounted CT monitors from Emporia, Refoss, Meross, Shelly, Eyedro, Siemens and others. Plug-in smart plugs and single-appliance meters are left out.
Circuit-level or whole-home is the first choice. A circuit-level kit comes with eight or more branch sensors, so you can see the air conditioner, dryer and EV charger separately. A whole-home monitor reads the service mains, or a few channels, and tells you the total and your solar production, but not which appliance caused it.
Local control or cloud is the second. Some monitors keep data on your network through an open API, MQTT or a Z-Wave hub, and work with Home Assistant. Others need the maker’s cloud and app.
Your electrical service matters before any of it. Most US homes have 120/240 V split-phase service, which nearly every model here supports. Three-phase and commercial services need a model that lists them.
Accuracy figures are the maker’s claims. We have not found independent bench tests of these models, so the accuracy score reflects a claim, not a measurement.
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Top Picks
Shelly EM Gen3
#5 in Whole-homeFull review
An inexpensive meter for a single circuit you care about, such as a sub-panel or heat pump.
Amazon $69.99$69.99
None in box (up to 2)
Shop by Type
Circuit-level
8 rankedKits with 8 or more branch-circuit sensors in the box, for seeing which appliance uses what.
Top rated: Meross EM16 $189.99
Whole-home
18 rankedMains-level and few-channel meters: total home or solar use, a feeder, or a handful of big loads.
Top rated: Aeotec Home Energy Meter 8 $95.99
Narrow It Down
By budget
Deals
Best Circuit-Level Home Energy Monitors
- Meross EM16#1 of 8Full review
A Refoss-class local monitor under the Meross name, a little cheaper.
Amazon $189.99$189.9916Local + Home Assistant±1% - Refoss EM16P#2 of 8Full review
The pick for Home Assistant users who want circuit data without a cloud account.
Amazon $199.99$199.9916Local + Home Assistant±1% - Fusion Energy SEM-Meter (16 sensors)#3 of 8Full review
The lowest price for 16 circuits and local MQTT, if you accept a lesser-known maker.
Amazon $139.99$139.9916Local + Home Assistant±1% - Fusion Energy SEM-Meter (8 sensors)#4 of 8Full review
Choose the 16-sensor kit instead unless it is out of stock; the saving here is small.
Amazon $129.99$129.998 (expands to 16)Local + Home Assistant±1% - Emporia Vue 3 Commercial 3-Phase#5 of 8Full review
For a small shop or workshop on 3-phase power; a homeowner on split-phase should buy the standard Vue 3.
Amazon $209.99$209.9916--
Best Whole-Home Energy Monitors
- Aeotec Home Energy Meter 8#1 of 18Full review
The Z-Wave choice for a whole-home meter that feeds your existing hub.
Amazon $95.99$95.99None in boxLocal + Home Assistant±1% - Aeotec Home Energy Meter Gen5#2 of 18Full review
The older Aeotec Z-Wave mains meter, for hubs without Z-Wave Long Range; most buyers should take the cheaper Home Energy Meter 8.
Amazon $115.99$115.99None in boxLocal + Home Assistant±1% - Shelly Pro 3EM 120A#3 of 18Full review
The first-generation Pro 3EM with a longer warranty; buy the v2 if you want Matter.
Amazon $153.33$153.33None in box (up to 3)-±1% - Shelly Pro 3EM 120A v2#4 of 18Full review
A DIN-rail meter for installers and tinkerers who want local control and solar metering.
Amazon $154.99$154.99None in box (up to 3)Local±1% - Shelly EM Gen3#5 of 18Full review
An inexpensive meter for a single circuit you care about, such as a sub-panel or heat pump.
Amazon $69.99$69.99None in box (up to 2)--
How We Rank
Each monitor is ranked against others of its type and scored on price, circuits, local control, accuracy claim, subscription cost and warranty.
| Factor | Measures | Weight |
|---|---|---|
| Value | purchase price | 25% |
| Circuits | branch circuits in the box, plus half of any that can be added | 20% |
| Local control | local API, MQTT or hub, Home Assistant, and working without the cloud | 20% |
| Accuracy | maker's claimed accuracy, not independently measured | 15% |
| Subscription | whether the maker says the service is free | 10% |
| Warranty | warranty length | 10% |
How we rank explains each factor in full.