Homey Energy now displays a solar forecast for today and tomorrow and calculates how much feeding power into the grid currently generates or costs. Athom, the company behind the Homey smart-home hub, introduced these two features on August 20, 2026, as an extension of Homey Energy, the platform’s energy module.
Key Points at a Glance
- The solar forecast shows the expected solar yield for today and tomorrow as a dashed line on the solar chart.
- Feed-in Price calculates the revenue or cost of feeding power into the grid, using either a fixed or dynamic rate.
- Both features can be integrated into automations via Flow cards, for example, to schedule devices to run during the sunniest hours.
- Available for Homey Pro (2023–2026), Homey Pro mini, and Homey Self-Hosted Server; on Homey Cloud only with Homey Premium.
- Requirements: Firmware v13.4.0 or later, Homey app v10.1.0 or later, and at least one solar panel device in Homey.
Solar Forecast: How much electricity will the roof generate today and tomorrow?
Until now, Homey Energy only showed what the solar system had already produced. The new solar forecast adds a preview: In the solar chart, the expected yield for today and tomorrow appears as a dashed line next to the actual production. According to Athom, the calculation is based on local weather data, the stored panel configuration, and past yield values. It’s expected to become more accurate over time as Homey collects more production data.
By default, Homey assumes a south-facing system with a standard tilt angle. If you want more precision, you can enter the orientation, tilt angle, and peak power yourself and create separate panel groups for roof areas with different orientations.
In practice, the forecast is most useful via flow charts: They provide values for today and tomorrow, including yield in kWh, peak power in watts, and the hours with the highest expected yield. This allows you to create automations that schedule the dishwasher, e-bike charger, or air conditioner specifically for the sunniest times of the day, so you can use more of the electricity you generate yourself, rather than just reacting to previously measured values.
Feed-in Tariff: What Feeding Electricity into the Grid Really Means
The second component is the feed-in tariff calculation. It shows what feeding excess solar power into the grid currently earns—or, in the case of negative prices, costs. You enter the rate once under Energy → Settings → Electricity → Feed-in Rate, after which it is automatically incorporated into Homey Energy’s energy balance.
There are two models to choose from:
- Fixed Price: The feed-in rate from your electricity contract is entered once. For contracts with peak and off-peak rates, using an average value yields more accurate results.
- Dynamic Price: The rate changes throughout the day. Homey automatically updates it based on current market prices, using the import price as a baseline and allowing for adjustments via a surcharge.
For users with a dynamic electricity rate, this is a useful addition: Homey has supported dynamic import prices since 2025, including through a partnership with the green electricity provider Ostrom. The feed-in price now also allows users to account for the other side of the equation, which is particularly useful for contracts with market-based feed-in tariffs.
“Solar systems are most useful when you know when the sun is at its strongest,” says Stefan Witkamp, CEO of Athom. “With a forecast and clear feed-in figures, users can plan their production instead of guessing.”
Requirements and Availability
Both features are now available for the following Homey systems, though with different requirements:
| Platform | Requirement |
|---|---|
| Homey Pro (2023–2026) | Firmware v13.4.0 or later |
| Homey Pro mini | Firmware version 13.4.0 or later |
| Homey Self-Hosted Server | Firmware version 13.4.0 or later |
| Homey Cloud | Homey Premium required |
| Homey Mobile App | Version 10.1.0 or later |
For the solar forecast, Homey also requires at least one configured solar panel device. Without it, the dotted line on the chart will remain blank.
Conclusion
The solar forecast and feed-in tariff transform Homey Energy from a simple consumption tracker into a planning tool. Anyone who owns a solar system and automates devices via Flows can now specifically schedule tasks for the sunniest hours, rather than reacting to electricity that’s already been generated. And for those feeding electricity into the grid, Homey now shows in real time exactly how much that’s worth. It’s a small but useful update that owners of Homey Pro (2023–2026), Homey Pro mini, and self-hosted server setups receive at no extra cost.
