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powercalc.nl

Virtual power sensors for Home Assistant that estimate energy and cost for devices without built-in meters

Netherlandspowercalc.nlWebsite technologies

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  • New on EvolcAdded 2026-10-28

About powercalc.nl

Powercalc is a Home Assistant add-on that estimates power, energy, cost and utility meter data for lights, fans, switches, media players and other devices that cannot measure their own consumption. It uses a shared library of device profiles, with options to fine-tune results using standby power and custom strategies.

The product is aimed at Home Assistant users who want energy insight without adding smart plugs to every device. It feeds Home Assistant's Energy dashboard with power, energy, utility meter, group and cost sensors. Users can also contribute measurements to improve the shared profile library. The project's code is published on GitHub.

Its documentation covers quick start, a device profile library, automatic profile discovery and contribution guidance.

Product: Powercalc, a Home Assistant integration that creates virtual power, energy, utility meter, group and cost sensors.

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