{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:42.768365Z",
  "location": {
    "city_id": "zagreb",
    "city": "Zagreb",
    "country_code": "HR",
    "country": "Croatia",
    "latitude": 45.815,
    "longitude": 15.9819,
    "timezone": "Europe/Zagreb"
  },
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "tomorrow_forecast": {
    "cityId": "zagreb",
    "name": "Zagreb",
    "lat": 45.815,
    "lon": 15.9819,
    "timezone": "Europe/Zagreb",
    "featured": true,
    "targetDate": "2026-08-05",
    "expectedKwh": 55.2,
    "lowKwh": 48.6,
    "highKwh": 56.7,
    "bestWindowStart": "2026-08-05T12:00:00+02:00",
    "bestWindowEnd": "2026-08-05T16:00:00+02:00",
    "confidence": "high",
    "fetchedAt": "2026-08-04T18:53:42.768365Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 45.815,
    "lon": 15.9819,
    "annualKwh": 12344.18,
    "averageDailyKwh": 33.82,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 18.98,
        "monthlyKwh": 588.46,
        "variabilityKwh": 164.48
      },
      {
        "month": 2,
        "averageDailyKwh": 25.8,
        "monthlyKwh": 722.52,
        "variabilityKwh": 182.85
      },
      {
        "month": 3,
        "averageDailyKwh": 35.72,
        "monthlyKwh": 1107.38,
        "variabilityKwh": 194.12
      },
      {
        "month": 4,
        "averageDailyKwh": 42.12,
        "monthlyKwh": 1263.59,
        "variabilityKwh": 158
      },
      {
        "month": 5,
        "averageDailyKwh": 42.84,
        "monthlyKwh": 1328.12,
        "variabilityKwh": 154.6
      },
      {
        "month": 6,
        "averageDailyKwh": 47.04,
        "monthlyKwh": 1411.31,
        "variabilityKwh": 101.21
      },
      {
        "month": 7,
        "averageDailyKwh": 47.24,
        "monthlyKwh": 1464.45,
        "variabilityKwh": 89.35
      },
      {
        "month": 8,
        "averageDailyKwh": 45.14,
        "monthlyKwh": 1399.46,
        "variabilityKwh": 152.27
      },
      {
        "month": 9,
        "averageDailyKwh": 38.01,
        "monthlyKwh": 1140.22,
        "variabilityKwh": 179.8
      },
      {
        "month": 10,
        "averageDailyKwh": 29.92,
        "monthlyKwh": 927.45,
        "variabilityKwh": 139.09
      },
      {
        "month": 11,
        "averageDailyKwh": 17.83,
        "monthlyKwh": 534.9,
        "variabilityKwh": 113.93
      },
      {
        "month": 12,
        "averageDailyKwh": 14.72,
        "monthlyKwh": 456.3,
        "variabilityKwh": 117.37
      }
    ]
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 5,
    "country_city_count": 5,
    "annual_yield_kwh_per_kwp": 1234.4180000000001
  },
  "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/"
}