{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:45.879686Z",
  "location": {
    "city_id": "aveiro",
    "city": "Aveiro",
    "country_code": "PT",
    "country": "Portugal",
    "latitude": 40.6457,
    "longitude": -8.6464,
    "timezone": "Europe/Lisbon"
  },
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "tomorrow_forecast": {
    "cityId": "aveiro",
    "name": "Aveiro",
    "lat": 40.6457,
    "lon": -8.6464,
    "timezone": "Europe/Lisbon",
    "featured": false,
    "targetDate": "2026-08-05",
    "expectedKwh": 53.2,
    "lowKwh": 42.4,
    "highKwh": 59.8,
    "bestWindowStart": "2026-08-05T13:00:00+01:00",
    "bestWindowEnd": "2026-08-05T17:00:00+01:00",
    "confidence": "medium",
    "fetchedAt": "2026-08-04T18:53:45.879686Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 40.6457,
    "lon": -8.6464,
    "annualKwh": 15042.15,
    "averageDailyKwh": 41.21,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 30.26,
        "monthlyKwh": 938.18,
        "variabilityKwh": 191.65
      },
      {
        "month": 2,
        "averageDailyKwh": 37.68,
        "monthlyKwh": 1055.03,
        "variabilityKwh": 187.91
      },
      {
        "month": 3,
        "averageDailyKwh": 40.67,
        "monthlyKwh": 1260.67,
        "variabilityKwh": 170.58
      },
      {
        "month": 4,
        "averageDailyKwh": 45.24,
        "monthlyKwh": 1357.27,
        "variabilityKwh": 142.05
      },
      {
        "month": 5,
        "averageDailyKwh": 48.33,
        "monthlyKwh": 1498.21,
        "variabilityKwh": 139.94
      },
      {
        "month": 6,
        "averageDailyKwh": 48.21,
        "monthlyKwh": 1446.34,
        "variabilityKwh": 88.53
      },
      {
        "month": 7,
        "averageDailyKwh": 51.28,
        "monthlyKwh": 1589.78,
        "variabilityKwh": 92.79
      },
      {
        "month": 8,
        "averageDailyKwh": 50.79,
        "monthlyKwh": 1574.42,
        "variabilityKwh": 69.53
      },
      {
        "month": 9,
        "averageDailyKwh": 46.71,
        "monthlyKwh": 1401.36,
        "variabilityKwh": 104.15
      },
      {
        "month": 10,
        "averageDailyKwh": 36.69,
        "monthlyKwh": 1137.33,
        "variabilityKwh": 147.69
      },
      {
        "month": 11,
        "averageDailyKwh": 30,
        "monthlyKwh": 900.03,
        "variabilityKwh": 179.56
      },
      {
        "month": 12,
        "averageDailyKwh": 28.5,
        "monthlyKwh": 883.54,
        "variabilityKwh": 136.2
      }
    ]
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 4,
    "country_city_count": 6,
    "annual_yield_kwh_per_kwp": 1504.215
  },
  "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/"
}