Open-Meteo

← Tariffs & forecasts

Free Weather API open-meteo.com Open-Meteo is an open-source weather API and offers free access for non-commercial use. No API key required.

Global

Parameters

Name	Description	Level
`lat`	Latitude Example: `55.7351`	optional
`lon`	Longitude Example: `9.1275`	optional
`az`	Azimuth Orientation of PV modules in degree. -180 = north, -90 = east, 0 = south, 90 = west, 180 = north Example: `0`	optional
`dec`	Decline 0 = horizontal, 90 = vertical Example: `25`	optional
`kwp` [kWp]	Maximum generator power Example: `9.8`	optional
`ac`	AC Power [kW] Default: `1000`	advanced
`dm`	Damping morning [%] Default: `0`	advanced
`de`	Damping evening [%] Default: `0`	advanced
`efficiency`	Efficiency [%] Default: `100`	advanced
`alphatemp`	Temperature coefficient Default: `-0.004`	advanced
`rossmodel`	Cooling type [Ross Model] Well Cooled (0.0200), Free Standing (0.0208), Flat on Roof (0.0260), Not So Well Cooled (0.0342), Transparent PV (0.0455), Facade Integrated (0.0538), On Sloped Roof (0.0563) sciencedirect.com Default: `0.0342`	advanced
`interval`	Interval Default: `1h`	advanced

Configuration example for evcc.yaml

If you don't want to configure via the UI, you can alternatively use this YAML block.

tariffs:
    solar:
      - type: template
        template: open-meteo
        lat: 55.7351 # Latitude
        lon: 9.1275 # Longitude
        az: 0 # Azimuth, Orientation of PV modules in degree. -180 = north, -90 = east, 0 = south, 90 = west, 180 = north
        dec: 25 # Decline, 0 = horizontal, 90 = vertical
        kwp: 9.8 # Maximum generator power (kWp)
        ac: 1000 # AC Power [kW], optional
        dm: 0 # Damping morning [%], optional
        de: 0 # Damping evening [%], optional
        efficiency: 100 # Efficiency [%], optional
        alphatemp: -0.004 # Temperature coefficient, optional
        rossmodel: 0.0342 # Cooling type [Ross Model], Well Cooled (0.0200), Free Standing (0.0208), Flat on Roof (0.0260), Not So Well Cooled (0.0342), Transparent PV (0.0455), Facade Integrated (0.0538), On Sloped Roof (0.0563) [sciencedirect.com](https://www.sciencedirect.com/science/article/pii/S2352484722024805) (optional)
        interval: 1h # Interval, optional