Vue-Energy Monitor for Whole Home (Gen 3), 3 Phase

Emporia Vue 3 – Whole-Home Energy Monitor

Gen 3 | 3-Phase 120/208V or 277/480V | Commercial & Large Residential

The same obsessive accuracy and expandability of the residential Vue 3 – now built for 3-phase power. Perfect for small commercial buildings, workshops, multi-family units, farms, large homes with 400A 3-phase service, or anywhere you have three hot legs.

Track every watt in real time, identify wasteful loads, verify tenant sub-metering, optimize solar/battery sizing, and catch equipment issues before they become expensive failures.

Key Features

• True 3-Phase Monitoring – Supports 120/208Y, 277/480Y, and Delta configurations (with proper CT placement)
• Real-Time 1-Second Resolution – See changes the moment they happen
• 3 × 200A Main CTs Included – Covers up to 600A total 3-phase service (larger CTs available)
• Expandable to 16 Individual Circuit Sensors – Monitor major loads or sub-panels (50A, 100A, 200A CTs sold separately)
• ±2% Revenue-Grade Accuracy – Meets utility and billing-grade standards
• Automatic Solar & Net Metering Detection – Works with 3-phase inverters out of the box
• Free Emporia App – Live dashboard, per-phase breakdowns, cost allocation, alerts, CSV export
• No Subscription Ever – Local processing + optional cloud over 2.4 GHz Wi-Fi
• Native Integrations – Home Assistant, HomeKit (via Homebridge), Alexa, Google Home, SmartThings
• Over-the-Air Updates – Continuously improved firmware (Gen 3 adds faster sampling, better 3-phase balancing detection, and Matter readiness)

What’s in the box

• Vue 3 Gen 3 3-Phase monitor with built-in Wi-Fi
• 3 × 200A main CT sensors (50 in leads)
• Antenna extension cable & mounting hardware
• Quick-start guide (additional circuit sensors sold separately)

No monthly fees. No lock-in. Just total visibility into your 3-phase power usage. Emporia Vue 3 – 3-Phase Edition. Because big power deserves big insights.