Sources
Transparent source list. If a provider key is missing, the service uses documented fallbacks instead of inventing data.
| Name | Type | Used for | Freshness | Limitations |
|---|---|---|---|---|
| aWATTar EPEX DE/AT | live | spot prices, price forecast, optimization windows | Usually hourly/day-ahead; cached by endpoint | External API availability; Market data may lag provider updates |
| Fraunhofer ISE energy-charts | live/cached | renewable share, generation mix, CO2 fallback model | Cached by endpoint, usually minutes to hours | Provider schema changes possible; Some values are modelled from generation mix |
| SMARD Bundesnetzagentur | live/cached | grid load | Cached by endpoint | Quarter-hour data availability depends on SMARD publication |
| Corrently GrünstromIndex | forecast/cached | regional green power index, regional CO2 estimate | Forecast data, cached by endpoint | Regional approximation by ZIP |
| Open-Meteo | forecast/cached | solar forecast, wind forecast, weather-driven optimization | Forecast data, cached by endpoint | Weather forecast uncertainty |
| Electricity Maps | live | carbon intensity when API key is available | Provider latest value | Requires configured provider key; fallback uses internal CO2 model |
| ENTSO-E Transparency | live/forecast | day-ahead prices and selected premium research | Provider publication schedule | Requires configured ENTSO-E key |
| Internal model | model | energy decisions, battery arbitrage, trading signal scoring | Generated per request from cached/live inputs | Decision outputs are estimates, not guarantees |