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 usagesensor.ac_power— HVAC power drawsensor.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_todayas the grid consumption source.
Last Updated
2026-06-24