{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:40.511484Z",
  "location": {
    "city_id": "leipzig",
    "city": "Leipzig",
    "country_code": "DE",
    "country": "Germany",
    "latitude": 51.3396,
    "longitude": 12.3713,
    "timezone": "Europe/Berlin"
  },
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "tomorrow_forecast": {
    "cityId": "leipzig",
    "name": "Leipzig",
    "lat": 51.3396,
    "lon": 12.3713,
    "timezone": "Europe/Berlin",
    "featured": false,
    "targetDate": "2026-08-05",
    "expectedKwh": 37.2,
    "lowKwh": 26.5,
    "highKwh": 44.7,
    "bestWindowStart": "2026-08-05T13:00:00+02:00",
    "bestWindowEnd": "2026-08-05T17:00:00+02:00",
    "confidence": "medium",
    "fetchedAt": "2026-08-04T18:53:40.511484Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 51.3396,
    "lon": 12.3713,
    "annualKwh": 10775.19,
    "averageDailyKwh": 29.52,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 11.25,
        "monthlyKwh": 348.67,
        "variabilityKwh": 93.02
      },
      {
        "month": 2,
        "averageDailyKwh": 19.64,
        "monthlyKwh": 549.82,
        "variabilityKwh": 140.98
      },
      {
        "month": 3,
        "averageDailyKwh": 29.31,
        "monthlyKwh": 908.74,
        "variabilityKwh": 177.42
      },
      {
        "month": 4,
        "averageDailyKwh": 40.55,
        "monthlyKwh": 1216.5,
        "variabilityKwh": 183.65
      },
      {
        "month": 5,
        "averageDailyKwh": 43.22,
        "monthlyKwh": 1339.87,
        "variabilityKwh": 177.44
      },
      {
        "month": 6,
        "averageDailyKwh": 44.02,
        "monthlyKwh": 1320.66,
        "variabilityKwh": 126.32
      },
      {
        "month": 7,
        "averageDailyKwh": 42.33,
        "monthlyKwh": 1312.31,
        "variabilityKwh": 146.03
      },
      {
        "month": 8,
        "averageDailyKwh": 38.97,
        "monthlyKwh": 1208.15,
        "variabilityKwh": 118.46
      },
      {
        "month": 9,
        "averageDailyKwh": 34.26,
        "monthlyKwh": 1027.94,
        "variabilityKwh": 146
      },
      {
        "month": 10,
        "averageDailyKwh": 24.17,
        "monthlyKwh": 749.12,
        "variabilityKwh": 135.85
      },
      {
        "month": 11,
        "averageDailyKwh": 15,
        "monthlyKwh": 450.05,
        "variabilityKwh": 112.61
      },
      {
        "month": 12,
        "averageDailyKwh": 11.08,
        "monthlyKwh": 343.37,
        "variabilityKwh": 79.62
      }
    ]
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 3,
    "country_city_count": 12,
    "annual_yield_kwh_per_kwp": 1077.519
  },
  "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/"
}