Hi everyone,
The HomeyScript prototype from this forum has grown into a native Homey app. Energy Price Forecast 1.0 is now available in Homey’s Test channel. The normal setup no longer requires HomeyScript or Advanced Flow.
Install the Test app:
What the app does
The app adds a virtual forecast device with:
- the current electricity price and current grid CO₂ intensity;
- official day-ahead prices whenever available, with forecast values filling only the remaining horizon;
- the cheapest continuous price window and the greenest CO₂ window;
- the cheapest N individual hours inside each fixed X-hour block, intended for heat pumps, boilers and other loads that must run regularly;
- a weekend charging plan for EVs;
- visible data source, forecast horizon and freshness status;
- Flow triggers and conditions for starting and ending plans, price/CO₂ windows, data freshness and failures.
The fixed-block heat-pump logic is deliberate: it prevents the app from always choosing a cheaper hour on the following day and postponing heating indefinitely.
Free and Private Pro
- Free: no account or API key required, with a forecast horizon of up to 48 hours. Weekend charging plans Saturday 00:00 to Monday 00:00.
- Private Pro: optional API key, with a horizon of up to 120 hours and the ability to prepare the weekend plan from Friday.
Private Pro is optional. The app and its core planning features remain usable without it.
Supported Homey platforms
This first Test release supports:
- Homey Pro;
- Homey Pro mini;
- Homey Self-Hosted Server.
Homey Cloud is not supported in this first release because publishing a cloud-compatible app requires an additional verified-developer step.
The app is currently in the Test channel and is not yet Homey-certified. Homey will show the corresponding warning during installation.
Markets and pricing
The app currently covers Germany, the Netherlands, Belgium, France, Austria, Czechia, Poland, Finland, Sweden (SE1–SE4), Denmark (DK1–DK2) and Norway (NO1–NO5).
Base market prices are available across these markets. Retail estimates are available for selected markets and may require a postcode. Forecast and retail values are estimates and can differ from your supplier’s final bill.
Privacy
The app requests only the information needed for the forecast: selected market, currency, horizon, pricing mode and—when retail pricing requires it—the postcode. An optional API key is sent as an authorization header. The app does not send Homey device lists, Flow contents or household consumption data to Energy Price Forecast.
Feedback that would help most
If you test it, please mention:
- your Homey model and country/price area;
- whether pairing and the setup explanations were clear;
- whether the heat-pump or weekend plan changes at the expected times;
- whether the Flow cards start and end reliably;
- any status value or number that looks wrong.
Screenshots are welcome, but please hide your API key and any personal information.
More details and installation guidance:
Thanks again to everyone who helped test the earlier HomeyScript version.
