Emporia Vue Gen 2 energy monitor ships with 16 CT clamps, supports single and three-phase power

We’ve just written about the “Smart Powermeter” measuring the power consumption of AC appliances through six CT clamps and running either ESPHome or Arduino firmware on ESP32-S3 WiFi and Bluetooth microcontroller. Some people asked about tri-phase and having more CT clamps.

One of the commenters then recommended readers to look at the Emporia Vue energy monitor that ships with 16 CT clamps for individual devices/rooms, two 200A CT clamps for whole house monitoring, and supports single-phase up to 240VAC line-neutral, single, split-phase 120/240VAC, and three-phase up to 415Y/240VAC (no Delta). So let’s do that now.

Emporia Vue


Emporia Vue Gen 2 specifications:

  • Connectivity – 2.4 GHz WiFi 4
  • Probes
    • 2x 200A current sensors for service mains; 3.5mm plug; dimensions: 65 x 44 x 41mm
    • 16x 50A current sensors to individually monitor air conditioner, furnace, water heater, washer, dryer, range, etc; 2.5mm plug, dimensions: 41 x 23 x 26; accurate from ±2%
  • Compatibility – Circuit panels of most homes with clamp-on sensors
    • Single-phase up to 240VAC line-neutral
    • Single, split-phase 120/240VAC
    • Three-phase up to 415Y/240VAC (no Delta).
  • Power Supply – 15A or 20A breaker
  • Power Consumption – Around 3 Watts
  • Dimensions – 105 x 80 x 30mm
  • Certifications
    • EMCTV2 ( E506714) as per UL/IEC/EN 62368-1

Power Meter 16 CT Clamps Tri Phase

The kit also ships with a wire harness, extra wire & wire nuts, a WiFi antenna & cable, and the company recommends an installation by a professional. We don’t know which chip is used inside the device, so a downside compared to the “Smart Powermeter” is that it’s not running the open-source ESPHome firmware for Home Assistant integration [Update: ESPHome does support the Emporia Vue 2], and instead, you’d need to rely on the company’s mobile app available for Android or iOS, or the web app for computers, laptops, etc… I can see a third-party project for Home Assistant integration, but I’m not 100% sure this it works with the Vue Gen 2.

The apps from Emporia enable continuous, real-time (at one-minute intervals) monitoring of energy usage and actionable notifications to help users conserve energy, lower carbon emissions and electricity bills, and shift usage patterns from peak to off-peak which may help with increased grid reliability. Note that one-second data is retained for 3 hours, one-minute data for 7 days, and 1-hour data “indefinitely”, and you can export the data whenever needed.

Emporia Android app
Emporia Android app screenshots

The Emporia Vue Gen 2 energy monitor is sold on Amazon for $164.99 with sixteen probes, $124.99 with eight probes, or $84.99 for the monitor only (with the two 200A CT clamps that are included in all packages). You’ll also find it on Emporia’s online store.

Thanks to Ross for the tip.

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4 Replies to “Emporia Vue Gen 2 energy monitor ships with 16 CT clamps, supports single and three-phase power”

  1. This product needs to be online to AWS all of the time since it stores all of its data there. It does not have a local API. This is the AWS API https://github.com/magico13/PyEmVue/blob/master/api_docs.md

    This is a problem over the long term because how long is Emporia going to want to pay the AWS bills? If they turn it off you now have a small boat anchor. Much smarter to use a little bit bigger CPU and some MMC flash, but they didn’t do that.

    This is the same mistake Samsung Smart Things initially made — very tiny CPU which could not function without continuous Internet assistance. Then they saw the light and now use a much larger CPU.

  2. The bundle with the car charger was really interesting, until i see that it’s a SAE J1772 connector ( type 1) so no luck for us Europeans using Type 2.

  3. I have been using this exact model with my Home Assistant and it works perfectly once flashed. You also backup the original programming so you can go back if you want.

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