⚡ Turn any device into an energy monitor, no smart plug required

PowerCalc brings energy monitoring to devices that normally don’t support it.

• Lights, fans, media devices, and more
• No extra hardware needed
• Works seamlessly inside Home Assistant

Instead of measuring power directly, PowerCalc accurately estimates consumption using smart models based on real measurements.

See it in action

Why use PowerCalc?

• 💰 Save money - no need to buy smart plugs for every device
• 🔍 Full visibility - track energy usage across your entire home
• ⚡ Accurate estimates - based on real device measurements
• 🔌 Works out of the box - huge built-in profile library
• 🧠 Advanced modeling - brightness, color, fan speed, and more

How it works

PowerCalc creates virtual power sensors in Home Assistant.

For example:

• 💡 Lights → power based on brightness, color, temperature
• 🌀 Fans → power based on speed
• 📺 Other devices → configurable strategies or measured profiles

You get realistic energy data — without physically measuring every device.

Get started

• 👉 Quick Start Guide
• 📚 Full Documentation
• 🔎 Device Profile Library

🌍 Community & contributions

PowerCalc is powered by a growing community:

• Contribute new device profiles
• Share measurements
• Improve accuracy for everyone

⭐ Support the project

If PowerCalc helped you:

• ⭐ Star this repository
• ☕ Buy me a coffee

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