Updated November 2026
Data from the official Emporia and Shelly sites.
2026 verdict
Per-breaker detail against a single DIN module, and the Shelly Pro 3EM v2 wins this comparison.
It is the cheaper of the pair, carries a three-year warranty, meters each phase with Class B accuracy down to plus or minus one per cent, reports power factor, and packs Wi-Fi, Ethernet, Bluetooth, Modbus and Matter into one DIN module with a documented local API. The Emporia Vue 3 is the panel-wide instrument, with mains clamps and sixteen branch clamps for per-circuit visibility across up to nineteen channels, and it is the better reviewed of the two. Choose the Shelly Pro 3EM v2 for accurate whole-supply or three-phase metering in a consumer unit, and the Emporia Vue 3 when you need a breaker-by-breaker breakdown.
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| Feature | Emporia Vue 3 | Shelly Pro 3EM v2 | Winner |
|---|---|---|---|
| Price | $199.99 | $154.99 | Shelly Pro 3EM v2 |
| Warranty | 1 year | 3 years | Shelly Pro 3EM v2 |
| Metering | Split-Phase Support, Three-Phase Support, Solar Net Metering | Three-Phase Support, Solar Net Metering, Power Factor Readings | Shelly Pro 3EM v2 |
| Connectivity | 2.4 GHz WiFi, Ethernet | 2.4 GHz WiFi, Ethernet, Bluetooth, Other | Shelly Pro 3EM v2 |
| Integrations | Google Home, Alexa, Home Assistant | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Shelly Pro 3EM v2 |
| Local Control | None | Local API, MQTT, Local Web Interface | Shelly Pro 3EM v2 |
| Local Control | NO | YES | Shelly Pro 3EM v2 |
| Rating | 4.6 | 4.6 | Tie |
| Breaker Panel Install | YES | YES | Tie |
| Smart Meter Port | NO | NO | Tie |
| Data & Monitoring | Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts | Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts | Tie |
| Relay Output | NO | NO | Tie |
What the differences mean
How many channels
The Emporia Vue 3 covers up to nineteen channels, the mains plus sixteen branch sensors, for a breaker-by-breaker breakdown. The Shelly Pro 3EM v2 has three channels only, used for three phases or three single-phase circuits, so it measures the supply, not each breaker.
Accuracy
The Shelly Pro 3EM v2 is Class B for active energy at plus or minus one per cent and reports power factor. The Emporia Vue 3 is rated within about two per cent and does not report power factor.
Mounting
The Shelly Pro 3EM v2 clips onto a DIN rail in one module, suiting a European consumer unit or a commercial panel. The Emporia Vue 3 sits inside a North American breaker panel, with clamps closed around live conductors.
Connectivity
The Shelly Pro 3EM v2 offers Wi-Fi, Ethernet, Bluetooth and Modbus, where the Emporia Vue 3 has Wi-Fi and Ethernet only. Both can be read locally, but only the Shelly has Modbus.
Smart home reach
The Shelly Pro 3EM v2 works with Matter, Apple Home through Matter, SmartThings, Alexa, Google Home and Home Assistant. The Emporia Vue 3 stops at Alexa, Google Home and a community Home Assistant integration, with no HomeKit, SmartThings or Matter.
History and warranty
The Emporia Vue 3 keeps unlimited hourly history with the finest views at three hours, seven days and forever. The Shelly Pro 3EM v2 holds at least 45 days of one-minute data on the device, and it carries a three-year warranty against one year on the Emporia Vue 3.
Which one to buy if
- you want to see every circuit in the panel
The Emporia Vue 3 monitors up to nineteen channels with its mains and sixteen branch clamps; the Shelly Pro 3EM v2 has three.
- your supply is three-phase and you want accurate whole-supply metering
The Shelly Pro 3EM v2 measures three phases with Class B accuracy and four quadrant import and export per phase.
- your consumer unit takes DIN modules
The Shelly Pro 3EM v2 fits one DIN module, while the Emporia Vue 3 is built for a North American breaker panel with clamps.
- you want Matter or Apple Home
The Shelly Pro 3EM v2 is Matter-ready and reaches Apple Home through Matter; the Emporia Vue 3 has neither.
- you want a consumer app with Alexa and Google
The Emporia Vue 3 pairs with Alexa and Google Home and a polished app; the Shelly Pro 3EM v2 targets automation platforms and Matter.
$199.99
- - Price: $199.99 vs $154.99
- - Warranty: 1 year vs 3 years
Winner
$154.99
- + Price: $154.99
- + Warranty: 3 years
- + Metering: Three-Phase Support, Solar Net Metering, Power Factor Readings
What owners say
These two are bought for different views of the same bill. Emporia Vue 3 owners want the whole panel broken down, praising the app that names each circuit and shows an appliance switching on second by second, plus solar net metering and export with no subscription; their complaints are the cloud-only platform, bulky clamps in a crowded panel and Wi-Fi that struggles inside a steel enclosure. Shelly Pro 3EM v2 owners fit one DIN module and call the setup simple, often to pull PV production back into Home Assistant when their inverter stopped reporting it, and they value the software and the local API; their caveats are that it has no relay of its own, that it costs more than the v1, and that older third-party systems may not recognise the v2 yet.
Frequently Asked Questions
Which is better overall: Emporia Vue 3 or Shelly Pro 3EM v2?
They answer different questions. The Emporia Vue 3 is the pick for a breaker-by-breaker view, with up to nineteen channels and a polished cloud app. The Shelly Pro 3EM v2 is the pick for accurate whole-supply or three-phase metering in a DIN consumer unit, with Class B accuracy, Matter and a three-year warranty.
What is the biggest difference between the Emporia Vue 3 and the Shelly Pro 3EM v2?
Scale. The Emporia Vue 3 monitors the mains plus sixteen branch circuits for per-breaker detail, while the Shelly Pro 3EM v2 has three channels for three phases or three single-phase circuits and is far more accurate at plus or minus one per cent.
Does the Shelly Pro 3EM v2 work with HomeKit or Matter?
It supports Matter, which brings it into Apple Home, and it also works with SmartThings, Alexa, Google Home and Home Assistant. The Emporia Vue 3 supports Alexa, Google Home and a community Home Assistant integration, but not HomeKit, SmartThings or Matter.
Can either of these switch a load on or off?
Not on their own. Both have no built-in relay: the Shelly Pro 3EM v2 needs the Shelly 3EM Switch Add-on for contactor control, and the Emporia Vue 3 only measures, using scripts or other devices for control.
Do the Emporia Vue 3 and Shelly Pro 3EM v2 need the cloud?
No for either. The Emporia Vue 3 does require an internet connection to work, since it has no local storage, while the Shelly Pro 3EM v2 runs locally over its embedded web interface, RPC, MQTT and Modbus and keeps at least 45 days of minute data on the device.
Who should buy the Emporia Vue 3?
Homeowners who want to find the biggest loads breaker by breaker, with a polished app, second-by-second data, solar net metering, time-of-use rates and long exportable history, and who accept a cloud platform.
Who should buy the Shelly Pro 3EM v2?
Homes with a three-phase supply or a DIN consumer unit that want accurate, documented power metering with local control, Matter support and a three-year warranty, in Home Assistant or a similar platform.
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