| site_id | `Optional[str]` | `rw` | `None` | pvnode.com site id of the saved plant ('Anlagen-ID'). When set, the saved (possibly calibrated) site is used. Leave empty to send the configured pvforecast.planes inline instead. |
| albedo | `Optional[float]` | `rw` | `0.2` | Proportion of the light hitting the ground that it reflects back. |
| inverter_model | `Optional[str]` | `rw` | `None` | Model of the inverter of this plane. |
| inverter_paco | `Optional[int]` | `rw` | `None` | AC power rating of the inverter [W]. |
| loss | `Optional[float]` | `rw` | `14.0` | Sum of PV system losses in percent |
| module_model | `Optional[str]` | `rw` | `None` | Model of the PV modules of this plane. |
| modules_per_string | `Optional[int]` | `rw` | `None` | Number of the PV modules of the strings of this plane. |
| mountingplace | `Optional[str]` | `rw` | `building` | Type of mounting for PV system. Options are 'free' for free-standing and 'building' for building-integrated. |
| optimal_surface_tilt | `Optional[bool]` | `rw` | `False` | Calculate the optimum tilt angle. Ignored for two-axis tracking. |
| optimalangles | `Optional[bool]` | `rw` | `False` | Calculate the optimum tilt and azimuth angles. Ignored for two-axis tracking. |
| peakpower | `Optional[float]` | `rw` | `None` | Nominal power of PV system in kW. |
| pvtechchoice | `Optional[str]` | `rw` | `crystSi` | PV technology. One of 'crystSi', 'CIS', 'CdTe', 'Unknown'. |
| strings_per_inverter | `Optional[int]` | `rw` | `None` | Number of the strings of the inverter of this plane. |
| surface_azimuth | `Optional[float]` | `rw` | `180.0` | Orientation (azimuth angle) of the (fixed) plane. Clockwise from north (north=0, east=90, south=180, west=270). |
| surface_tilt | `Optional[float]` | `rw` | `30.0` | Tilt angle from horizontal plane. Ignored for two-axis tracking. |
| base_url | `Optional[str]` | `rw` | `None` | Base URL of the Home Assistant instance. Only required when EOS is not running as a Home Assistant add-on (no SUPERVISOR_TOKEN available). |
| datetime_key | `str` | `rw` | `datetime` | Key for the timestamp in each forecast entry. |
| entity_id | `str` | `rw` | `sensor.pv_forecast` | Home Assistant entity providing the PV forecast. |
| token | `Optional[str]` | `rw` | `None` | Long-lived access token for the Home Assistant instance. Only required when EOS is not running as a Home Assistant add-on. |
| value_key | `str` | `rw` | `watts` | Key for the AC power value in each forecast entry. |
| value_unit | `Literal['W', 'kW']` | `rw` | `W` | Unit of the forecast value. Converted to W internally. |
| albedo | `float` | `rw` | `0.25` | Ground albedo used for planes that do not set their own. |
| apply_iam | `bool` | `rw` | `True` | Apply the ASHRAE incidence-angle modifier to the beam component. |
| backend | `Literal['remote', 'local']` | `rw` | `remote` | Akkudoktor forecast backend: remote API or local Open-Meteo/pvlib model. |
| calibration_azimuth_bin_degrees | `int` | `rw` | `45` | Width of the solar-azimuth bins for the correction. 0 fits a single global factor only. |
| calibration_days | `int` | `rw` | `30` | Length of the measurement window used to fit the correction. |
| calibration_enabled | `bool` | `rw` | `False` | Correct systematic model error against measured PV production. Requires `measurement.pv_production_emr_keys` to be configured and fed. Fits a global scale factor plus per-solar-azimuth factors, which is what catches near-field shading the horizon profile misses. |
| calibration_max_factor | `float` | `rw` | `1.5` | Upper clamp on any fitted correction factor. |
| calibration_min_factor | `float` | `rw` | `0.5` | Lower clamp on any fitted correction factor. |
| calibration_min_healthy_days | `int` | `rw` | `3` | Minimum number of healthy days used for a fit. Older healthy days from the reference window are added when the recent window contains fewer. |
| calibration_outage_filter_enabled | `bool` | `rw` | `True` | Exclude days whose measured production is far below the recent healthy plant level. This prevents inverter, battery and curtailment events from being learned as permanent PV model losses. |
| calibration_outage_threshold | `float` | `rw` | `0.55` | A day is treated as unavailable when its measured/modelled energy ratio is below this fraction of the robust healthy reference ratio. |
| calibration_prior_kwh | `float` | `rw` | `5.0` | Shrinkage strength: a bin needs this much modelled energy before its own factor outweighs the global one. Higher is more conservative. |
| calibration_reference_days | `int` | `rw` | `30` | Lookback used to distinguish healthy production from outages or curtailment. If the calibration window contains too few healthy days, the most recent healthy days from this reference window are used. |
| forecast_days | `Optional[int]` | `rw` | `None` | Forecast horizon in days (1-16). Leave empty to derive it from `prediction.hours`, which is what keeps the optimizer's tail horizon fed. |
| past_days | `Optional[int]` | `rw` | `None` | Days of past data to request (0-92). Leave empty to derive it from `prediction.historic_hours`. |
| resolution_minutes | `int` | `rw` | `15` | Forecast resolution in minutes. 15 requests Open-Meteo's `minutely_15` block (natively resolved over Central Europe and North America, interpolated from hourly elsewhere); 60 requests the `hourly` block. |
| shift_to_interval_start | `bool` | `rw` | `True` | Open-Meteo stamps an interval mean with the interval END. EOS labels an interval by its START, so records are shifted back by one interval. Disable only to compare like-for-like against a provider that does not. |
| temperature_coefficient | `float` | `rw` | `-0.36` | Module power temperature coefficient in %/degC (negative). Matches the `cellCoEff` the akkudoktor.net forecast uses. |
| weather_models | `list[str]` | `rw` | `['best_match']` | Open-Meteo weather models to request. Listing more than one turns the input into a poor-man's ensemble: the members are averaged per variable, which is the cheapest reliable way to cut irradiance forecast error. Costs no extra API calls. |
