Power Wheel Card
A custom Lovelace card for Home Assistant that visualizes home power and energy consumption/production in an intuitive wheel diagram.
What is Power Wheel Card?
Power Wheel Card is a custom Lovelace UI card for Home Assistant that visualizes home energy systems. It displays power and energy flows between solar panels, the grid, and home consumption in an intuitive wheel diagram with interactive views for power, energy, and cost data. The card solves the problem of understanding complex energy metrics by providing clear visual feedback on production, consumption, and grid interactions.
Home Assistant users with solar panels or energy monitoring systems who want a better visual representation of their energy data. It's particularly useful for homeowners tracking solar production, grid dependency, and energy costs.
Developers choose Power Wheel Card for its unique visual approach to energy data—transforming numbers into an intuitive wheel diagram with animated flows. Unlike basic sensor cards, it provides calculated insights, multiple view modes, and extensive customization while integrating seamlessly with Home Assistant's ecosystem.
Overview
An intuitive way to represent the power and energy that your home is consuming or producing. (A custom card for the Lovelace UI of Home Assistant.)
Use Cases
Best For
- Visualizing solar panel production and home energy consumption
- Monitoring grid import/export in real-time
- Tracking energy costs and savings from solar systems
- Creating informative dashboards for home energy management
- Integrating battery system data into energy flow visualizations
- Customizing Lovelace UI with advanced energy monitoring cards
Not Ideal For
- Home setups relying solely on a single net grid power sensor, as energy and money views lose detailed arrow calculations and visualizations.
- Users needing production-ready, stable battery system integration, since battery support is in BETA with known display issues and incomplete layout.
- Systems with complex time-of-day energy pricing models, as the card only supports average consumption and production rates without dynamic adjustments.
- Projects seeking a plug-and-play card with minimal configuration, due to the extensive sensor setup and parameter tuning required for advanced views.
Pros & Cons
Pros
The interactive wheel diagram with animated arrows clearly depicts energy direction between solar, grid, and home, transforming raw sensor data into an easily digestible format at a glance, as shown in the example GIFs.
Toggles between power, energy, and money views provide real-time values, accumulated data, and cost calculations based on configurable rates, allowing users to track different aspects of their energy system seamlessly.
Supports custom icons, colors via CSS variables, and integration with card-mod for advanced styling, enabling users to match the card with their Home Assistant themes and personal preferences without coding from scratch.
Computes net grid power, home consumption, and energy costs from sensor inputs, reducing manual effort—for instance, it automatically derives home power from solar and grid data when separate sensors are provided.
Cons
Battery support is experimental with known issues in arrow display and layout; the README explicitly warns that values don't show correctly all the time and future changes may break functionality.
Advanced energy and money views require separate consumption and production sensors; using net sensors limits features like arrow coloring and can complicate setup for users with basic monitoring infrastructure.
Setting up multiple views involves numerous parameters and precise sensor matching (e.g., consistent units and time frames), which can be error-prone and daunting for non-technical users without prior Home Assistant experience.
Frequently Asked Questions
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