{
  "schema_version": "1.1",
  "generated_at": "2026-10-04T22:01:13.271570Z",
  "evaluated_at": "2026-10-04T22:43:30.331Z",
  "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": "karlsruhe",
    "city": "Karlsruhe",
    "country_code": "DE",
    "country": "Germany",
    "latitude": 49.0094,
    "longitude": 8.4044,
    "timezone": "Europe/Berlin"
  },
  "forecast_status": "current",
  "tomorrow_forecast": {
    "cityId": "karlsruhe",
    "name": "Karlsruhe",
    "lat": 49.0094,
    "lon": 8.4044,
    "timezone": "Europe/Berlin",
    "featured": false,
    "targetDate": "2026-10-06",
    "expectedKwh": 43.1,
    "lowKwh": 38,
    "highKwh": 44.6,
    "bestWindowStart": "2026-10-06T12:00:00+02:00",
    "bestWindowEnd": "2026-10-06T16:00:00+02:00",
    "confidence": "high",
    "fetchedAt": "2026-10-04T22:01:13.271570Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 49.0094,
    "lon": 8.4044,
    "annualKwh": 11361.71,
    "averageDailyKwh": 31.13,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 13.51,
        "monthlyKwh": 418.92,
        "variabilityKwh": 75.74
      },
      {
        "month": 2,
        "averageDailyKwh": 22.15,
        "monthlyKwh": 620.16,
        "variabilityKwh": 146.37
      },
      {
        "month": 3,
        "averageDailyKwh": 32.4,
        "monthlyKwh": 1004.45,
        "variabilityKwh": 185.98
      },
      {
        "month": 4,
        "averageDailyKwh": 41.94,
        "monthlyKwh": 1258.26,
        "variabilityKwh": 207.72
      },
      {
        "month": 5,
        "averageDailyKwh": 42.33,
        "monthlyKwh": 1312.21,
        "variabilityKwh": 180.74
      },
      {
        "month": 6,
        "averageDailyKwh": 44.87,
        "monthlyKwh": 1346.25,
        "variabilityKwh": 132.62
      },
      {
        "month": 7,
        "averageDailyKwh": 44.04,
        "monthlyKwh": 1365.3,
        "variabilityKwh": 144.39
      },
      {
        "month": 8,
        "averageDailyKwh": 41.35,
        "monthlyKwh": 1281.81,
        "variabilityKwh": 107.92
      },
      {
        "month": 9,
        "averageDailyKwh": 37.15,
        "monthlyKwh": 1114.36,
        "variabilityKwh": 112.81
      },
      {
        "month": 10,
        "averageDailyKwh": 25.84,
        "monthlyKwh": 801.13,
        "variabilityKwh": 114.85
      },
      {
        "month": 11,
        "averageDailyKwh": 15.93,
        "monthlyKwh": 477.86,
        "variabilityKwh": 90.97
      },
      {
        "month": 12,
        "averageDailyKwh": 11.65,
        "monthlyKwh": 361.01,
        "variabilityKwh": 102.61
      }
    ],
    "fetchedAt": "2026-10-04T18:06:20.328Z",
    "sourceUrl": "https://re.jrc.ec.europa.eu/api/v5_3/PVcalc?lat=49.0094&lon=8.4044&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": 2,
    "country_city_count": 42,
    "annual_yield_kwh_per_kwp": 1136.1709999999998
  }
}