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        "lat": 51.5555,
        "lon": 5.0913,
        "timezone": "Europe/Amsterdam",
        "featured": false,
        "targetDate": "2026-08-05",
        "expectedKwh": 25,
        "lowKwh": 15.8,
        "highKwh": 33.6,
        "bestWindowStart": "2026-08-05T13:00:00+02:00",
        "bestWindowEnd": "2026-08-05T17:00:00+02:00",
        "confidence": "medium",
        "fetchedAt": "2026-08-04T18:53:44.970249Z",
        "freshness": "fresh",
        "stale": false
      },
      "typical_annual_kwh": 10276.45,
      "typical_monthly": [
        {
          "month": 1,
          "averageDailyKwh": 11.38,
          "monthlyKwh": 352.81,
          "variabilityKwh": 68.45
        },
        {
          "month": 2,
          "averageDailyKwh": 18.46,
          "monthlyKwh": 516.76,
          "variabilityKwh": 141.34
        },
        {
          "month": 3,
          "averageDailyKwh": 29.06,
          "monthlyKwh": 900.96,
          "variabilityKwh": 172.3
        },
        {
          "month": 4,
          "averageDailyKwh": 39.64,
          "monthlyKwh": 1189.18,
          "variabilityKwh": 177.12
        },
        {
          "month": 5,
          "averageDailyKwh": 40.88,
          "monthlyKwh": 1267.4,
          "variabilityKwh": 155.65
        },
        {
          "month": 6,
          "averageDailyKwh": 42.16,
          "monthlyKwh": 1264.77,
          "variabilityKwh": 142.65
        },
        {
          "month": 7,
          "averageDailyKwh": 39.81,
          "monthlyKwh": 1234.06,
          "variabilityKwh": 152.65
        },
        {
          "month": 8,
          "averageDailyKwh": 36.87,
          "monthlyKwh": 1143.12,
          "variabilityKwh": 118.33
        },
        {
          "month": 9,
          "averageDailyKwh": 32.98,
          "monthlyKwh": 989.53,
          "variabilityKwh": 88.73
        },
        {
          "month": 10,
          "averageDailyKwh": 22.52,
          "monthlyKwh": 698.15,
          "variabilityKwh": 98.26
        },
        {
          "month": 11,
          "averageDailyKwh": 14.24,
          "monthlyKwh": 427.29,
          "variabilityKwh": 74.53
        },
        {
          "month": 12,
          "averageDailyKwh": 9.43,
          "monthlyKwh": 292.43,
          "variabilityKwh": 75.39
        }
      ]
    },
    {
      "city_id": "utrecht",
      "city": "Utrecht",
      "latitude": 52.0908,
      "longitude": 5.1222,
      "forecast": {
        "cityId": "utrecht",
        "name": "Utrecht",
        "lat": 52.0908,
        "lon": 5.1222,
        "timezone": "Europe/Amsterdam",
        "featured": false,
        "targetDate": "2026-08-05",
        "expectedKwh": 28.4,
        "lowKwh": 18.3,
        "highKwh": 37.7,
        "bestWindowStart": "2026-08-05T12:00:00+02:00",
        "bestWindowEnd": "2026-08-05T16:00:00+02:00",
        "confidence": "medium",
        "fetchedAt": "2026-08-04T18:53:44.885377Z",
        "freshness": "fresh",
        "stale": false
      },
      "typical_annual_kwh": 10237.74,
      "typical_monthly": [
        {
          "month": 1,
          "averageDailyKwh": 11.18,
          "monthlyKwh": 346.71,
          "variabilityKwh": 52.94
        },
        {
          "month": 2,
          "averageDailyKwh": 18.19,
          "monthlyKwh": 509.21,
          "variabilityKwh": 130.57
        },
        {
          "month": 3,
          "averageDailyKwh": 29.26,
          "monthlyKwh": 907.12,
          "variabilityKwh": 173.66
        },
        {
          "month": 4,
          "averageDailyKwh": 40.29,
          "monthlyKwh": 1208.74,
          "variabilityKwh": 162.45
        },
        {
          "month": 5,
          "averageDailyKwh": 41.52,
          "monthlyKwh": 1287.09,
          "variabilityKwh": 147.42
        },
        {
          "month": 6,
          "averageDailyKwh": 42.32,
          "monthlyKwh": 1269.67,
          "variabilityKwh": 132.63
        },
        {
          "month": 7,
          "averageDailyKwh": 40.32,
          "monthlyKwh": 1249.78,
          "variabilityKwh": 151.91
        },
        {
          "month": 8,
          "averageDailyKwh": 36.94,
          "monthlyKwh": 1145.29,
          "variabilityKwh": 120.59
        },
        {
          "month": 9,
          "averageDailyKwh": 32,
          "monthlyKwh": 959.91,
          "variabilityKwh": 94.64
        },
        {
          "month": 10,
          "averageDailyKwh": 21.88,
          "monthlyKwh": 678.23,
          "variabilityKwh": 109.75
        },
        {
          "month": 11,
          "averageDailyKwh": 13.08,
          "monthlyKwh": 392.45,
          "variabilityKwh": 61.3
        },
        {
          "month": 12,
          "averageDailyKwh": 9.15,
          "monthlyKwh": 283.55,
          "variabilityKwh": 68.52
        }
      ]
    }
  ],
  "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/"
}