{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:42.671480Z",
  "location": {
    "city_id": "patras",
    "city": "Patras",
    "country_code": "GR",
    "country": "Greece",
    "latitude": 38.2466,
    "longitude": 21.7346,
    "timezone": "Europe/Athens"
  },
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "tomorrow_forecast": {
    "cityId": "patras",
    "name": "Patras",
    "lat": 38.2466,
    "lon": 21.7346,
    "timezone": "Europe/Athens",
    "featured": true,
    "targetDate": "2026-08-05",
    "expectedKwh": 45.9,
    "lowKwh": 37.3,
    "highKwh": 50.9,
    "bestWindowStart": "2026-08-05T11:00:00+03:00",
    "bestWindowEnd": "2026-08-05T15:00:00+03:00",
    "confidence": "medium",
    "fetchedAt": "2026-08-04T18:53:42.671480Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 38.2466,
    "lon": 21.7346,
    "annualKwh": 15623.4,
    "averageDailyKwh": 42.8,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 30.45,
        "monthlyKwh": 943.98,
        "variabilityKwh": 145.61
      },
      {
        "month": 2,
        "averageDailyKwh": 34.44,
        "monthlyKwh": 964.31,
        "variabilityKwh": 160.2
      },
      {
        "month": 3,
        "averageDailyKwh": 42.12,
        "monthlyKwh": 1305.63,
        "variabilityKwh": 156.39
      },
      {
        "month": 4,
        "averageDailyKwh": 46.84,
        "monthlyKwh": 1405.07,
        "variabilityKwh": 121.81
      },
      {
        "month": 5,
        "averageDailyKwh": 48.26,
        "monthlyKwh": 1496.07,
        "variabilityKwh": 126.72
      },
      {
        "month": 6,
        "averageDailyKwh": 51.69,
        "monthlyKwh": 1550.84,
        "variabilityKwh": 60.48
      },
      {
        "month": 7,
        "averageDailyKwh": 53.84,
        "monthlyKwh": 1669.02,
        "variabilityKwh": 30.83
      },
      {
        "month": 8,
        "averageDailyKwh": 53.6,
        "monthlyKwh": 1661.58,
        "variabilityKwh": 48.09
      },
      {
        "month": 9,
        "averageDailyKwh": 48.21,
        "monthlyKwh": 1446.42,
        "variabilityKwh": 85.94
      },
      {
        "month": 10,
        "averageDailyKwh": 40.85,
        "monthlyKwh": 1266.26,
        "variabilityKwh": 135.89
      },
      {
        "month": 11,
        "averageDailyKwh": 33.9,
        "monthlyKwh": 1017.06,
        "variabilityKwh": 140.53
      },
      {
        "month": 12,
        "averageDailyKwh": 28.94,
        "monthlyKwh": 897.17,
        "variabilityKwh": 141.64
      }
    ]
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 3,
    "country_city_count": 6,
    "annual_yield_kwh_per_kwp": 1562.34
  },
  "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/"
}