Best 3-Phase Energy Monitors Ranked

A Refoss-class local monitor under the Meross name, a little cheaper.

The pick for Home Assistant users who want circuit data without a cloud account.

The lowest price for 16 circuits and local MQTT, if you accept a lesser-known maker.

Choose the 16-sensor kit instead unless it is out of stock; the saving here is small.

For a small shop or workshop on 3-phase power; a homeowner on split-phase should buy the standard Vue 3.

The most common panel-wide monitor for a home with a typical 200A split-phase service. Pick it if you want per-circuit data and are fine with a cloud app.

A cheaper start for the same Vue 3 brain, if you only care about the big appliances.

The first-generation Pro 3EM with a longer warranty; buy the v2 if you want Matter.

A DIN-rail meter for installers and tinkerers who want local control and solar metering.

A tidy 63A three-phase meter for small sub-panels.

A budget three-phase meter for a small installation.

Only worth it if your service is above 120A and the 400A sensors are confirmed with the seller.

The cheapest way into Emporia: whole-home numbers now, circuit sensors as you need them.

For 3-phase and commercial service where a homeowner monitor does not fit.

For large commercial three-phase services where rigid clamps will not fit around the conductors.

For 400A three-phase services in shops and small commercial buildings that want totals and solar without a subscription.

For 600A three-phase services; most homes need a smaller option.