{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:46.807077Z",
  "location": {
    "city_id": "zilina",
    "city": "Žilina",
    "country_code": "SK",
    "country": "Slovakia",
    "latitude": 49.2231,
    "longitude": 18.7394,
    "timezone": "Europe/Bratislava"
  },
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "tomorrow_forecast": {
    "cityId": "zilina",
    "name": "Žilina",
    "lat": 49.2231,
    "lon": 18.7394,
    "timezone": "Europe/Bratislava",
    "featured": true,
    "targetDate": "2026-08-05",
    "expectedKwh": 54.5,
    "lowKwh": 48,
    "highKwh": 55.7,
    "bestWindowStart": "2026-08-05T11:00:00+02:00",
    "bestWindowEnd": "2026-08-05T15:00:00+02:00",
    "confidence": "high",
    "fetchedAt": "2026-08-04T18:53:46.807077Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 49.2231,
    "lon": 18.7394,
    "annualKwh": 10836.23,
    "averageDailyKwh": 29.69,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 14.26,
        "monthlyKwh": 441.91,
        "variabilityKwh": 154.14
      },
      {
        "month": 2,
        "averageDailyKwh": 21.31,
        "monthlyKwh": 596.71,
        "variabilityKwh": 139.04
      },
      {
        "month": 3,
        "averageDailyKwh": 31.23,
        "monthlyKwh": 968.21,
        "variabilityKwh": 187.1
      },
      {
        "month": 4,
        "averageDailyKwh": 38.77,
        "monthlyKwh": 1163.14,
        "variabilityKwh": 183.99
      },
      {
        "month": 5,
        "averageDailyKwh": 39.13,
        "monthlyKwh": 1212.95,
        "variabilityKwh": 208.83
      },
      {
        "month": 6,
        "averageDailyKwh": 42.86,
        "monthlyKwh": 1285.78,
        "variabilityKwh": 161.82
      },
      {
        "month": 7,
        "averageDailyKwh": 42.37,
        "monthlyKwh": 1313.6,
        "variabilityKwh": 125.48
      },
      {
        "month": 8,
        "averageDailyKwh": 39.98,
        "monthlyKwh": 1239.35,
        "variabilityKwh": 132.83
      },
      {
        "month": 9,
        "averageDailyKwh": 34.13,
        "monthlyKwh": 1024.01,
        "variabilityKwh": 159.17
      },
      {
        "month": 10,
        "averageDailyKwh": 25.81,
        "monthlyKwh": 800.11,
        "variabilityKwh": 164.2
      },
      {
        "month": 11,
        "averageDailyKwh": 14.81,
        "monthlyKwh": 444.43,
        "variabilityKwh": 103.46
      },
      {
        "month": 12,
        "averageDailyKwh": 11.16,
        "monthlyKwh": 346.04,
        "variabilityKwh": 66.59
      }
    ]
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 5,
    "country_city_count": 5,
    "annual_yield_kwh_per_kwp": 1083.623
  },
  "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/"
}