{
  "schema_version": "1.1",
  "generated_at": "2026-10-22T02:01:11.704529Z",
  "evaluated_at": "2026-10-22T04:06:18.638Z",
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "sources": {
    "tomorrow": {
      "attribution": {
        "text": "Weather forecast by Open-Meteo, PV estimate by GridPassport.",
        "transformation_notes": "GridPassport projects irradiance onto the configured PV array and applies public lead-magnet loss assumptions."
      },
      "model": {
        "description": "Weather-based physical PV estimate with public-safe inputs.",
        "name": "GridPassport public PV forecast model",
        "source_id": "GRIDPASSPORT_PV_PUBLIC_V1"
      },
      "weather": {
        "name": "Open-Meteo weather forecast",
        "pricing_url": "https://open-meteo.com/en/pricing",
        "public_display_allowed": true,
        "requires_commercial_license": true,
        "source_id": "OPEN_METEO",
        "terms_url": "https://open-meteo.com/en/terms"
      }
    },
    "typical_year": {
      "name": "European Commission Joint Research Centre PVGIS 5.3",
      "url": "https://joint-research-centre.ec.europa.eu/photovoltaic-geographical-information-system-pvgis_en",
      "api": "https://re.jrc.ec.europa.eu/api/v5_3/PVcalc",
      "method": "Monthly average fixed-system output calculated from a multi-year solar radiation and climate series."
    }
  },
  "license": {
    "identifier": "CC-BY-4.0",
    "name": "Creative Commons Attribution 4.0 International",
    "url": "https://creativecommons.org/licenses/by/4.0/",
    "attribution": "GridPassport Solar Dataset (CC BY 4.0), using Open-Meteo weather data (CC BY 4.0) transformed by GridPassport and typical PV profiles from European Commission JRC PVGIS.",
    "scope": "GridPassport published solar forecast CSV and JSON datasets."
  },
  "methodology_url": "https://gridpassport.com/solar-forecast/methodology/",
  "reuse_terms_url": "https://gridpassport.com/solar-forecast/methodology/#data-license",
  "location": {
    "city_id": "ludwigshafen-am-rhein",
    "city": "Ludwigshafen am Rhein",
    "country_code": "DE",
    "country": "Germany",
    "latitude": 49.4812,
    "longitude": 8.4464,
    "timezone": "Europe/Berlin"
  },
  "forecast_status": "current",
  "tomorrow_forecast": {
    "cityId": "ludwigshafen-am-rhein",
    "name": "Ludwigshafen am Rhein",
    "lat": 49.4812,
    "lon": 8.4464,
    "timezone": "Europe/Berlin",
    "featured": false,
    "targetDate": "2026-10-23",
    "expectedKwh": 11.3,
    "lowKwh": 7.4,
    "highKwh": 15.1,
    "bestWindowStart": "2026-10-23T13:00:00+02:00",
    "bestWindowEnd": "2026-10-23T17:00:00+02:00",
    "confidence": "medium",
    "fetchedAt": "2026-10-22T02:01:11.704529Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 49.4812,
    "lon": 8.4464,
    "annualKwh": 11055.95,
    "averageDailyKwh": 30.29,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 12.76,
        "monthlyKwh": 395.45,
        "variabilityKwh": 78.97
      },
      {
        "month": 2,
        "averageDailyKwh": 21.8,
        "monthlyKwh": 610.37,
        "variabilityKwh": 147.32
      },
      {
        "month": 3,
        "averageDailyKwh": 31.99,
        "monthlyKwh": 991.59,
        "variabilityKwh": 180.89
      },
      {
        "month": 4,
        "averageDailyKwh": 41.84,
        "monthlyKwh": 1255.3,
        "variabilityKwh": 189.48
      },
      {
        "month": 5,
        "averageDailyKwh": 41.88,
        "monthlyKwh": 1298.35,
        "variabilityKwh": 175.76
      },
      {
        "month": 6,
        "averageDailyKwh": 44.34,
        "monthlyKwh": 1330.14,
        "variabilityKwh": 138.75
      },
      {
        "month": 7,
        "averageDailyKwh": 43.1,
        "monthlyKwh": 1335.96,
        "variabilityKwh": 127.42
      },
      {
        "month": 8,
        "averageDailyKwh": 39.88,
        "monthlyKwh": 1236.16,
        "variabilityKwh": 111.73
      },
      {
        "month": 9,
        "averageDailyKwh": 36.23,
        "monthlyKwh": 1086.83,
        "variabilityKwh": 121.35
      },
      {
        "month": 10,
        "averageDailyKwh": 24.54,
        "monthlyKwh": 760.84,
        "variabilityKwh": 110.52
      },
      {
        "month": 11,
        "averageDailyKwh": 14.37,
        "monthlyKwh": 430.97,
        "variabilityKwh": 77.87
      },
      {
        "month": 12,
        "averageDailyKwh": 10.45,
        "monthlyKwh": 324,
        "variabilityKwh": 77.5
      }
    ],
    "fetchedAt": "2026-10-21T14:01:03.286Z",
    "sourceUrl": "https://re.jrc.ec.europa.eu/api/v5_3/PVcalc?lat=49.4812&lon=8.4464&peakpower=10&loss=14&angle=35&aspect=0&outputformat=json",
    "radiationDatabase": "PVGIS-SARAH3",
    "sourcePeriod": {
      "fromYear": 2005,
      "throughYear": 2023
    }
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 12,
    "country_city_count": 77,
    "annual_yield_kwh_per_kwp": 1105.595
  }
}