Powercalc for Home Assistant (Marketplace integration)

Installs: 14.6k sharing analytics
GitHub stars: 1.6k
Connection: Works locally
Upkeep: Updated in the last 6 months
Version: v1.26.1, October 27, 2026
Category: Energy, Meters and monitoring
Kind: Marketplace integration
Needs: Needs the Marketplace (HACS on 2026.10 and older)
Domain: powercalc
Source: github.com/bramstroker/homeassistant-powercalc
Issues: Report an issue

Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation.

About

Powercalc is a custom integration that estimates power consumption for lights and other appliances without a smart plug. It creates virtual power sensors, with lights estimated from brightness, color and temperature, and fans from speed. Other devices can use a fixed power value, a daily energy value or measured profiles from a built-in library. It also adds energy, standby energy and cost sensors, utility meters, and group sensors that combine devices or rooms into one total. Cost can be based on a fixed price or a price sensor, with an optional surcharge and multiplier. Actions cover calibrating and resetting energy and cost sensors, running playbooks, and switching a profile's sub profile. It runs locally and is set up in the UI.

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Supports

Works locally Talks to your devices on your own network. No vendor cloud in between.
From the Marketplace Installed through the Marketplace, formerly HACS.
Actively maintained Its author released or pushed a change in the last six months.

Provides

Sensors

Setting it up

Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services.

Assign to group

Select group(s)
New groupFill in a custom group name to create a new group

Availability entity

Availability entityWhen this entity is unavailable, the powercalc sensor will be unavailable as well

Create a daily fixed sensor

Create utility meters
Daily energy value
Name
On timeWhen left empty defaults to 1 day. always on
Start time
Unit of measurement
Update frequencytime in seconds between state updates of the sensor
Value
Value template

Energy options

Integration method
Unit prefix
Filter outliersEnable filtering of outlier values in the energy sensor
Outlier filter max stepMaximum expected step in power values (in watts) for the outlier filter

Create a domain based group sensor

Name
Create energy sensor
Create cost sensor
Create utility meters
Entity domain
Exclude entities

Fixed config

Power valuePower value in Watts when the entity is ON

Global configuration

Power sensor name pattern
Power sensor friendly name pattern
Power sensor category
Power sensor precision
Follow device nameUse the assigned device name for generated entities of supported virtual power sensors configured in the UI. Entity IDs and custom entity names stay unchanged. Turning this off restores the configured names. Custom display-name patterns, including global patterns, take precedence: affected entries keep their configured names.
Create energy sensorsWhether powercalc needs to create kWh sensors
Create cost sensorsWhether powercalc needs to create cost sensors. Requires an energy price to be configured in the next steps
Create standby groupCreate group which sums all standby power consumption and self-usage of IOT devices
Create utility metersLet powercalc create utility meters, which cycle daily, hourly etc.
Enable anonymous analyticsAllow Powercalc to send anonymous, aggregated usage statistics to help improve the integration
Ignore unavailable stateKeep Powercalc sensors available, even when the source entity is unavailable
Include non powercalc sensorsControl whether you want to include non powercalc sensors in groups
Disable extended attributesDisable all extra attributes powercalc adds to the power, energy and group entity states. This will help keep the database size small
Disable remote library downloadDisable the Powercalc library download feature

Cost options

Fixed energy priceA fixed price per kWh in your local currency
Energy price multiplierMultiplier applied after the surcharge. Use this for percentage-based taxes or fees, for example 1.21 for 21%
Energy price sensorA sensor which provides the current energy price per kWh (e.g. from a dynamic tariff integration). Leave the fixed price empty to use this sensor
Energy price surchargeAdditional fixed amount per kWh added to the fixed price or price sensor value
Cost sensor friendly name patternPattern for the friendly name of the cost sensor. The source name is inserted at the placeholder position
Cost sensor name patternPattern used to build the cost sensor name and entity id. The source name is inserted at the placeholder position

After setup

Calculation enabled conditionThe configured power calculation strategy will only be executed when this template evaluates to true or 1, otherwise the power sensor will display 0
Energy integration method
Ignore unavailable stateToggle this setting when you want the power sensor to stay available even if the source entity is unavailable
Multiply factorMultiplies the calculated power by this ratio. Can be useful for light groups
Multiply factor standbyWhether to also apply multiplication factor to standby power
Unavailable powerPower in W to record when the source entity has an unavailable state
Create energy sensorWhether powercalc needs to create a kWh sensor
Create standby energy sensorWhether Powercalc should create a kWh sensor that tracks only standby consumption
Create cost sensor
Create utility metersLet powercalc create utility meters, which cycle daily, hourly etc.
Source entityEntity the virtual power is based on, the power sensor will listen to state changes of this entity to be updated
NameLeaving blank will take the name from the source entity
Standby powerDefine the amount of power the device is consuming when in an OFF state
Daily energy value
Name
On timeWhen left empty defaults to 1 day. always on
Start time
Unit of measurement
Update frequencytime in seconds between state updates of the sensor
Value
Value template
Integration method
Unit prefix
Filter outliersEnable filtering of outlier values in the energy sensor
Outlier filter max stepMaximum expected step in power values (in watts) for the outlier filter
Fixed value
Self usage includedWhether the power value includes the power consumed by the smart switch itself.
Power sensor name pattern
Power sensor friendly name pattern
Power sensor category
Power sensor precision
Follow device nameUse the assigned device name for generated entities of supported virtual power sensors configured in the UI. Entity IDs and custom entity names stay unchanged. Turning this off restores the configured names. Custom display-name patterns, including global patterns, take precedence: affected entries keep their configured names.
Create energy sensorsWhether powercalc needs to create kWh sensors
Create cost sensorsWhether powercalc needs to create cost sensors. Requires an energy price to be configured in the next steps
Create standby groupCreate group which sums all standby power consumption and self-usage of IOT devices
Create utility metersLet powercalc create utility meters, which cycle daily, hourly etc.
Enable anonymous analyticsAllow Powercalc to send anonymous, aggregated usage statistics to help improve the integration
Ignore unavailable stateKeep Powercalc sensors available, even when the source entity is unavailable
Include non powercalc sensorsControl whether you want to include non powercalc sensors in groups
Disable extended attributesDisable all extra attributes powercalc adds to the power, energy and group entity states. This will help keep the database size small
Disable remote library downloadDisable the Powercalc library download feature
Fixed energy priceA fixed price per kWh in your local currency
Energy price multiplierMultiplier applied after the surcharge. Use this for percentage-based taxes or fees, for example 1.21 for 21%
Energy price sensorA sensor which provides the current energy price per kWh (e.g. from a dynamic tariff integration). Leave the fixed price empty to use this sensor
Energy price surchargeAdditional fixed amount per kWh added to the fixed price or price sensor value
Cost sensor friendly name patternPattern for the friendly name of the cost sensor. The source name is inserted at the placeholder position
Cost sensor name patternPattern used to build the cost sensor name and entity id. The source name is inserted at the placeholder position
Apply to existing sensorsUpdate every existing GUI powercalc sensor to match the new cost sensors setting

Texts from the code of bramstroker/homeassistant-powercalc.

Entities

SensorsMeasure session status, Power, Energy, Standby energy, Cost

Actions

Activate playbookStart execution of a playbook.Fields: Playbook
Calibrate energy sensorSets the energy sensor to a given kWh value.Fields: Value
Calibrate cost sensorSets the cost sensor to a given monetary value.Fields: Value
Calibrate utility meterCalibrates a utility meter sensor.Fields: Value
Change GUI configBatch change configuration of all Powercalc config entriesFields: Value, Value
Debug groupGet a debug overview of a group power or energy sensor including current member values.
Get active playbookGet current running playbook
Get group entitiesRetrieve all entity id's of a group energy or power sensor
Increase daily energy sensorIncreases the sensor with a given amount.Fields: Value
ReloadReload Powercalc configuration and entities
Reset energy sensorReset an energy sensor to zero kWh.
Reset cost sensorReset a cost sensor to zero.
Stop playbookStop currently active playbook.
Switch to another sub profileSome profiles in the library has different sub profiles. This service allows you to switch to another one.Fields: Sub profile

Troubleshooting

DiagnosticsDownloads a diagnostics file to attach to a bug report.
Repair noticesNotices it can show in Settings, Repairs:Powercalc YAML configuration has moved, YAML configuration changed