{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:39.930765Z",
  "location": {
    "city_id": "st-gallen",
    "city": "St. Gallen",
    "country_code": "CH",
    "country": "Switzerland",
    "latitude": 47.4239,
    "longitude": 9.3748,
    "timezone": "Europe/Zurich"
  },
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "tomorrow_forecast": {
    "cityId": "st-gallen",
    "name": "St. Gallen",
    "lat": 47.4239,
    "lon": 9.3748,
    "timezone": "Europe/Zurich",
    "featured": false,
    "targetDate": "2026-08-05",
    "expectedKwh": 47.8,
    "lowKwh": 35.1,
    "highKwh": 54.8,
    "bestWindowStart": "2026-08-05T11:00:00+02:00",
    "bestWindowEnd": "2026-08-05T15:00:00+02:00",
    "confidence": "medium",
    "fetchedAt": "2026-08-04T18:53:39.930765Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 47.4239,
    "lon": 9.3748,
    "annualKwh": 11341.52,
    "averageDailyKwh": 31.07,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 18.29,
        "monthlyKwh": 567.14,
        "variabilityKwh": 139.05
      },
      {
        "month": 2,
        "averageDailyKwh": 27.62,
        "monthlyKwh": 773.44,
        "variabilityKwh": 137.03
      },
      {
        "month": 3,
        "averageDailyKwh": 33.83,
        "monthlyKwh": 1048.7,
        "variabilityKwh": 196.47
      },
      {
        "month": 4,
        "averageDailyKwh": 39.44,
        "monthlyKwh": 1183.2,
        "variabilityKwh": 205.94
      },
      {
        "month": 5,
        "averageDailyKwh": 37.5,
        "monthlyKwh": 1162.41,
        "variabilityKwh": 167.43
      },
      {
        "month": 6,
        "averageDailyKwh": 40.98,
        "monthlyKwh": 1229.26,
        "variabilityKwh": 184.4
      },
      {
        "month": 7,
        "averageDailyKwh": 41.06,
        "monthlyKwh": 1272.83,
        "variabilityKwh": 155.85
      },
      {
        "month": 8,
        "averageDailyKwh": 38.43,
        "monthlyKwh": 1191.33,
        "variabilityKwh": 154.62
      },
      {
        "month": 9,
        "averageDailyKwh": 35.05,
        "monthlyKwh": 1051.52,
        "variabilityKwh": 132.84
      },
      {
        "month": 10,
        "averageDailyKwh": 27.44,
        "monthlyKwh": 850.52,
        "variabilityKwh": 117.05
      },
      {
        "month": 11,
        "averageDailyKwh": 17.94,
        "monthlyKwh": 538.2,
        "variabilityKwh": 150.21
      },
      {
        "month": 12,
        "averageDailyKwh": 15.26,
        "monthlyKwh": 472.97,
        "variabilityKwh": 168.78
      }
    ]
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 8,
    "country_city_count": 8,
    "annual_yield_kwh_per_kwp": 1134.152
  },
  "sources": {
    "tomorrow": {
      "weather": {
        "source_id": "OPEN_METEO",
        "name": "Open-Meteo weather forecast",
        "public_display_allowed": true,
        "requires_commercial_license": true,
        "terms_url": "https://open-meteo.com/en/terms",
        "pricing_url": "https://open-meteo.com/en/pricing"
      },
      "model": {
        "source_id": "GRIDPASSPORT_PV_PUBLIC_V1",
        "name": "GridPassport public PV forecast model",
        "description": "Weather-based physical PV estimate with public-safe inputs."
      },
      "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."
      }
    },
    "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."
    }
  },
  "methodology_url": "https://gridpassport.com/solar-forecast/methodology/"
}