Home Assistant Energy Dashboard

Home Assistant’s Energy Dashboard brings consumption and production together over time. A polished dashboard is only useful when its sensors measure the right thing. Begin with one verified grid meter; add solar, battery, gas, water, appliances, EV charging and prices only after the baseline agrees.

Measure before automating

A wrong unit, sign or duplicate source can move flexible consumption to the wrong time. Always compare against a physical meter or provider settlement data.

Understand power, energy, price and cost

Quantity	Typical unit	Meaning
Power	W or kW	Rate of consumption or production right now
Energy	Wh or kWh	Accumulated quantity over time
Price	currency/kWh	Price per unit of energy
Cost	currency	Energy multiplied by the relevant price/tariff

A 2,000 W sensor is an instant reading. A 12,345 kWh sensor is normally a running total. Energy Dashboard expects energy sensors with correct units, device_class and state_class so Home Assistant can create long-term statistics.

Do not use a power sensor directly as energy. If a source provides compatible instantaneous power only, Home Assistant’s Integral/Riemann sum integration can derive energy over time. Validate method, time unit and sign against official documentation; integrating noisy or missing samples can create drift.

Prerequisites and entity quality

Before adding a sensor, inspect Developer tools → States and Settings → Devices & services → Statistics:

• W/kW is used for power and Wh/kWh for energy;
• device_class is power, energy, gas or water as appropriate;
• state_class matches a measurement or accumulating total;
• updates are stable without frequent unknown or unavailable states;
• totals increase as documented or handle legitimate resets;
• import, export, production, charge and discharge are distinct quantities.

Home Assistant can repair some statistics metadata, but understand the warning before changing units or sums.

Step 1: configure grid consumption

1. Find a cumulative import sensor

   Select the meter representing energy purchased from the grid. Do not use the sum of smart plugs as a substitute for the main meter.

2. Check units and statistics

   Compare its change over an hour or day with the physical meter. Confirm a restart does not reset it unexpectedly.

3. Add it to Energy configuration

   Open Settings → Dashboards → Energy and choose grid consumption.

4. Wait for statistics

   Energy data is not always immediate. Wait for the next statistics period and inspect the graph.

5. Validate for at least one day

   Compare dashboard daily consumption with an independent meter source.

If you have separate export, add it as grid return. A negative net sensor is not always a safe replacement for separate import and export totals; follow the integration’s documented semantics.

Step 2: add solar production

Add the inverter’s cumulative production energy. Determine whether it represents the whole array, one inverter, one phase or one string. Give multiple sources clear names such as East roof and West roof.

Avoid duplicate counting:

• do not add both a total and all of its components as full sources;
• grid export is not total solar production because self-consumption is absent;
• verify timezone and daily-reset behaviour of vendor sensors.

Step 3: add a home battery

A battery normally needs separate energy sensors for:

• energy into the battery (charge);
• energy out of the battery (discharge).

State of charge in percent is useful operationally but does not replace charge and discharge energy. Check sign and direction: some inverters report discharge as negative power while the dashboard expects separate positive totals.

Step 4: add gas and water

Gas and water are optional layers. Use cumulative volume in a supported unit and the correct device class. A pulse meter must retain its total through reboot and must not count one pulse twice.

Validate:

• each physical pulse matches the configured conversion;
• the total increases monotonically except documented replacement/reset events;
• the dashboard period matches the meter reading you compare.

Step 5: appliances and EV charging

Individual devices explain where energy went. Add an energy sensor from a smart plug or submeter, not only its current watt reading.

For an EV, use a dedicated charger or submeter energy total. Name it so it is not confused with vehicle battery percentage. When charging already passes through the main meter, it is a sub-consumer and must not be added to grid import.

Regional prices and tariffs are optional

Energy Dashboard can use a fixed price, price entity or cost data supplied by an integration. Regional price integrations are optional and vary with country, market, currency, network operator and contract.

Choose a local integration that documents:

• whether the value is spot price, all-in price or one component;
• currency and price per kWh;
• resolution and timezone;
• taxes, network charges, fees and export compensation;
• negative prices and changing tariff periods.

Do not label spot price as total cost when delivery and taxes are absent. The main workflow requires no national provider or tariff model.

Multiple sources and clear names

Home Assistant supports multiple grid, solar, battery, water and gas sources. Name them by function and location:

• Grid import – house
• Grid export – house
• Solar production – garage
• Water – garden
• EV charger – carport

Home Assistant 2026.6 improved naming for multi-source dashboards. Good names make cards, graphs and statistics warnings easier to understand.

Validate data before adding another layer

Use a repeatable control:

1. Read the physical meter and Home Assistant at the same time.
2. Wait a known period, preferably a day.
3. Compare the change, not only absolute totals.
4. Calculate percentage difference and explain expected loss or sampling gaps.
5. Inspect graphs around reboot, midnight and network outages.
6. Add another source only when the current one is trustworthy.

Small differences can come from rounding and update intervals. Large or growing differences point to units, sign, source choice or duplicate counting.

Automate only from trustworthy measurements

After validation, data can drive actions such as:

• charge an EV from surplus solar;
• heat water during cheap or sunny periods;
• warn about abnormal standby consumption;
• stop irrigation after unusual water use;
• limit total power below a grid threshold.

Use thresholds, minimum duration, hysteresis and an unavailable fallback. One bad price or sensor sample must not start expensive or harmful equipment.

Privacy and locality

Energy Dashboard runs in Home Assistant, but a source can be cloud-backed. A meter, inverter or vehicle integration may send consumption to its vendor. Review integration IoT class and privacy terms. Prefer stable supported local APIs where available, but never describe cloud data as local.

Troubleshooting

The sensor cannot be selected

Check unit, device class, state class and long-term statistics. Read the exact statistics issue rather than changing metadata randomly to make it appear.

The graph shows double consumption

Check whether the same energy appears as two grid sources or whether both a total and its components were added. Individual devices are breakdowns, not extra grid import.

Values become negative

Determine whether the sign means export/discharge or a sensor error. The Energy Dashboard is easiest to reason about with documented separate directions.

Gaps appear after unavailable states

Inspect integration, network and recorder/statistics health. Do not fill missing samples with zero automatically: zero means measured no use, not missing data.

The total resets

Use a sensor and state class that supports documented resets, or a Utility Meter that preserves the period total correctly. Check long-term statistics before editing historical data.

Price and cost disagree

Compare currency, unit, timezone, tax, delivery charges, fees and export price. Dashboard and bill may use different settlement periods.

Automations

Continue with your first automation.

Troubleshooting

Read Home Assistant troubleshooting.

Official sources

• Home energy management
• Energy integration
• Integral (Riemann sum)
• Utility Meter
• Home Assistant 2026.6 release notes