# 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.

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## 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

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## 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.

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## 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

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## 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