Energy Monitoring

Overview
Energy monitoring is multi-layered: Emporia Vue provides granular circuit-level monitoring across 12 household circuits, CO2 Signal (Electricity Maps) provides real-time grid carbon intensity for Ontario, and the Ontario Energy Board integration provides local energy tariff data.
Emporia Vue
Integration: 
emporia_vue (HACS) | Account: Customer 233316 | Device: VUE003 (Vue3-812 firmware)
The Emporia Vue whole-home energy monitor is installed on the main panel. The system uses a single VUE003 unit with multiple CT clamp circuits.
Monitored Circuits
Circuit
Device Name
Area
Main Panel (whole home)
Cornell Vue
(unassigned)
Main Floor Plugs
Main Floor Plugs
Living Room
Hot Water Heater / HRV
Hot water Heater/HRV
Basement
Furnace
Furnace
Basement
AC
AC
Basement
2nd Floor Plugs
2nd Floor Plugs
Media Room
Washer
Washer
Laundry Room
Kitchen Appliances
Kitchen Appliances
Kitchen
Microwave
Microwave
Kitchen
Stove
Stove
Kitchen
Fridge
Fridge
Kitchen
Kitchen Plugs
Kitchen Plugs
Kitchen
Kitchen Plug
Kitchen Plug
Kitchen
Dishwasher
Dishwasher
Kitchen
Dryer
Dryer
Laundry Room
Balance (remaining)
Balance
(unassigned)
Third Floor Plugs
Third Floor Plugs
Office
Main Floor Lights
Main Floor Lights
Living Room
The Kitchen has the most granular monitoring: 7 individual circuits (appliances + plugs).
Key Entities
Each Emporia circuit exposes power (
sensor.*.power) and energy (
sensor.*.energy_today) sensors.
Notable:
sensor.cornell_vue_energy_today — daily whole-home energy usage
sensor.ac_power — HVAC power draw
sensor.furnace_power — heating power
CO2 Signal (Electricity Maps)
Integration: 
co2signal | Device: Electricity Maps
Provides real-time electricity grid carbon intensity data for the Ontario grid region.
Entity
Notes
sensor.electricity_maps_*
Grid carbon intensity (gCO2eq/kWh)
Useful for automations that shift non-essential loads to low-carbon grid hours.
Ontario Energy Board
Integration: 
ontario_energy_board (HACS) | Authors: jrfernandes, n3rdp1um23
Provides Ontario Time-of-Use (TOU) electricity pricing data:
On-peak, mid-peak, off-peak rate selectors
Schedule-aware — useful for automations that avoid running high-draw appliances during on-peak hours
Notes / Gotchas
The Emporia Vue uses a cloud API — if Emporia cloud is down, data will be unavailable. Historical data is stored in HA's recorder database.
For long-term storage and visualization, Emporia data flows into InfluxDB (add-on) and is visualized in Grafana (add-on).
The HA Energy dashboard can be configured to use 
sensor.cornell_vue_energy_today as the grid consumption source.
Last Updated
2026-06-24