{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:40.143504Z",
  "location": {
    "city_id": "prague",
    "city": "Prague",
    "country_code": "CZ",
    "country": "Czechia",
    "latitude": 50.0755,
    "longitude": 14.4378,
    "timezone": "Europe/Prague"
  },
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "tomorrow_forecast": {
    "cityId": "prague",
    "name": "Prague",
    "lat": 50.0755,
    "lon": 14.4378,
    "timezone": "Europe/Prague",
    "featured": true,
    "targetDate": "2026-08-05",
    "expectedKwh": 45.4,
    "lowKwh": 32.5,
    "highKwh": 52.4,
    "bestWindowStart": "2026-08-05T12:00:00+02:00",
    "bestWindowEnd": "2026-08-05T16:00:00+02:00",
    "confidence": "medium",
    "fetchedAt": "2026-08-04T18:53:40.143504Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 50.0755,
    "lon": 14.4378,
    "annualKwh": 10927.93,
    "averageDailyKwh": 29.94,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 12.98,
        "monthlyKwh": 402.36,
        "variabilityKwh": 75.66
      },
      {
        "month": 2,
        "averageDailyKwh": 21.74,
        "monthlyKwh": 608.7,
        "variabilityKwh": 126.03
      },
      {
        "month": 3,
        "averageDailyKwh": 30.89,
        "monthlyKwh": 957.7,
        "variabilityKwh": 171.32
      },
      {
        "month": 4,
        "averageDailyKwh": 40.64,
        "monthlyKwh": 1219.27,
        "variabilityKwh": 180.78
      },
      {
        "month": 5,
        "averageDailyKwh": 41.78,
        "monthlyKwh": 1295.04,
        "variabilityKwh": 180
      },
      {
        "month": 6,
        "averageDailyKwh": 43.66,
        "monthlyKwh": 1309.78,
        "variabilityKwh": 116.59
      },
      {
        "month": 7,
        "averageDailyKwh": 42.43,
        "monthlyKwh": 1315.26,
        "variabilityKwh": 115.34
      },
      {
        "month": 8,
        "averageDailyKwh": 39.61,
        "monthlyKwh": 1227.87,
        "variabilityKwh": 105.94
      },
      {
        "month": 9,
        "averageDailyKwh": 35.15,
        "monthlyKwh": 1054.38,
        "variabilityKwh": 131.29
      },
      {
        "month": 10,
        "averageDailyKwh": 24.6,
        "monthlyKwh": 762.66,
        "variabilityKwh": 153.14
      },
      {
        "month": 11,
        "averageDailyKwh": 13.84,
        "monthlyKwh": 415.28,
        "variabilityKwh": 76.82
      },
      {
        "month": 12,
        "averageDailyKwh": 11.6,
        "monthlyKwh": 359.63,
        "variabilityKwh": 60.32
      }
    ]
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 3,
    "country_city_count": 6,
    "annual_yield_kwh_per_kwp": 1092.7930000000001
  },
  "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/"
}