{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:47.813764Z",
  "country_code": "IS",
  "country": "Iceland",
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "city_count": 4,
  "summary": {
    "tomorrow_average_kwh": 22.575,
    "tomorrow_min_kwh": 9.5,
    "tomorrow_max_kwh": 58.5,
    "typical_annual_average_kwh": 7642.1849999999995,
    "typical_annual_min_kwh": 7095.55,
    "typical_annual_max_kwh": 8188.82
  },
  "cities": [
    {
      "city_id": "akureyri",
      "city": "Akureyri",
      "latitude": 65.6835,
      "longitude": -18.0878,
      "forecast": {
        "cityId": "akureyri",
        "name": "Akureyri",
        "lat": 65.6835,
        "lon": -18.0878,
        "timezone": "Atlantic/Reykjavik",
        "featured": true,
        "targetDate": "2026-08-05",
        "expectedKwh": 58.5,
        "lowKwh": 48.8,
        "highKwh": 66.1,
        "bestWindowStart": "2026-08-05T13:00:00+00:00",
        "bestWindowEnd": "2026-08-05T17:00:00+00:00",
        "confidence": "high",
        "fetchedAt": "2026-08-04T18:53:43.287367Z",
        "freshness": "fresh",
        "stale": false
      },
      "typical_annual_kwh": 8188.82,
      "typical_monthly": [
        {
          "month": 1,
          "averageDailyKwh": 1.58,
          "monthlyKwh": 49.11,
          "variabilityKwh": 14.71
        },
        {
          "month": 2,
          "averageDailyKwh": 10.78,
          "monthlyKwh": 301.94,
          "variabilityKwh": 59.39
        },
        {
          "month": 3,
          "averageDailyKwh": 26.46,
          "monthlyKwh": 820.21,
          "variabilityKwh": 64.57
        },
        {
          "month": 4,
          "averageDailyKwh": 43.4,
          "monthlyKwh": 1302.06,
          "variabilityKwh": 132.07
        },
        {
          "month": 5,
          "averageDailyKwh": 47.05,
          "monthlyKwh": 1458.5,
          "variabilityKwh": 153.54
        },
        {
          "month": 6,
          "averageDailyKwh": 40.2,
          "monthlyKwh": 1205.87,
          "variabilityKwh": 156.02
        },
        {
          "month": 7,
          "averageDailyKwh": 33.84,
          "monthlyKwh": 1049.04,
          "variabilityKwh": 162
        },
        {
          "month": 8,
          "averageDailyKwh": 28.42,
          "monthlyKwh": 881.17,
          "variabilityKwh": 117.67
        },
        {
          "month": 9,
          "averageDailyKwh": 22.36,
          "monthlyKwh": 670.7,
          "variabilityKwh": 63.63
        },
        {
          "month": 10,
          "averageDailyKwh": 11.81,
          "monthlyKwh": 365.98,
          "variabilityKwh": 42.58
        },
        {
          "month": 11,
          "averageDailyKwh": 2.78,
          "monthlyKwh": 83.37,
          "variabilityKwh": 17.59
        },
        {
          "month": 12,
          "averageDailyKwh": 0.03,
          "monthlyKwh": 0.87,
          "variabilityKwh": 0.49
        }
      ]
    },
    {
      "city_id": "keflavik",
      "city": "Keflavík",
      "latitude": 64.0049,
      "longitude": -22.5624,
      "forecast": {
        "cityId": "keflavik",
        "name": "Keflavík",
        "lat": 64.0049,
        "lon": -22.5624,
        "timezone": "Atlantic/Reykjavik",
        "featured": true,
        "targetDate": "2026-08-05",
        "expectedKwh": 9.5,
        "lowKwh": 6,
        "highKwh": 12.9,
        "bestWindowStart": "2026-08-05T15:00:00+00:00",
        "bestWindowEnd": "2026-08-05T19:00:00+00:00",
        "confidence": "medium",
        "fetchedAt": "2026-08-04T18:53:43.473316Z",
        "freshness": "fresh",
        "stale": false
      },
      "typical_annual_kwh": 7213.78,
      "typical_monthly": [
        {
          "month": 1,
          "averageDailyKwh": 1.35,
          "monthlyKwh": 42,
          "variabilityKwh": 17.1
        },
        {
          "month": 2,
          "averageDailyKwh": 6.69,
          "monthlyKwh": 187.4,
          "variabilityKwh": 58.37
        },
        {
          "month": 3,
          "averageDailyKwh": 17.46,
          "monthlyKwh": 541.32,
          "variabilityKwh": 142.71
        },
        {
          "month": 4,
          "averageDailyKwh": 28.71,
          "monthlyKwh": 861.43,
          "variabilityKwh": 141.25
        },
        {
          "month": 5,
          "averageDailyKwh": 40.09,
          "monthlyKwh": 1242.91,
          "variabilityKwh": 198.84
        },
        {
          "month": 6,
          "averageDailyKwh": 37.91,
          "monthlyKwh": 1137.38,
          "variabilityKwh": 228.41
        },
        {
          "month": 7,
          "averageDailyKwh": 37.51,
          "monthlyKwh": 1162.91,
          "variabilityKwh": 159.17
        },
        {
          "month": 8,
          "averageDailyKwh": 31.43,
          "monthlyKwh": 974.38,
          "variabilityKwh": 135.53
        },
        {
          "month": 9,
          "averageDailyKwh": 20.58,
          "monthlyKwh": 617.32,
          "variabilityKwh": 86.16
        },
        {
          "month": 10,
          "averageDailyKwh": 11.37,
          "monthlyKwh": 352.36,
          "variabilityKwh": 58.06
        },
        {
          "month": 11,
          "averageDailyKwh": 2.85,
          "monthlyKwh": 85.45,
          "variabilityKwh": 26.82
        },
        {
          "month": 12,
          "averageDailyKwh": 0.29,
          "monthlyKwh": 8.94,
          "variabilityKwh": 4.64
        }
      ]
    },
    {
      "city_id": "reykjavik",
      "city": "Reykjavík",
      "latitude": 64.1355,
      "longitude": -21.8954,
      "forecast": {
        "cityId": "reykjavik",
        "name": "Reykjavík",
        "lat": 64.1355,
        "lon": -21.8954,
        "timezone": "Atlantic/Reykjavik",
        "featured": true,
        "targetDate": "2026-08-05",
        "expectedKwh": 11.7,
        "lowKwh": 7.4,
        "highKwh": 15.6,
        "bestWindowStart": "2026-08-05T17:00:00+00:00",
        "bestWindowEnd": "2026-08-05T21:00:00+00:00",
        "confidence": "medium",
        "fetchedAt": "2026-08-04T18:53:47.701829Z",
        "freshness": "fresh",
        "stale": false
      },
      "typical_annual_kwh": 7095.55,
      "typical_monthly": [
        {
          "month": 1,
          "averageDailyKwh": 1.05,
          "monthlyKwh": 32.47,
          "variabilityKwh": 14.56
        },
        {
          "month": 2,
          "averageDailyKwh": 6.2,
          "monthlyKwh": 173.63,
          "variabilityKwh": 52.19
        },
        {
          "month": 3,
          "averageDailyKwh": 19.42,
          "monthlyKwh": 602.14,
          "variabilityKwh": 164.11
        },
        {
          "month": 4,
          "averageDailyKwh": 29.63,
          "monthlyKwh": 889.02,
          "variabilityKwh": 155.48
        },
        {
          "month": 5,
          "averageDailyKwh": 38.38,
          "monthlyKwh": 1189.8,
          "variabilityKwh": 161.79
        },
        {
          "month": 6,
          "averageDailyKwh": 36.93,
          "monthlyKwh": 1107.81,
          "variabilityKwh": 175.35
        },
        {
          "month": 7,
          "averageDailyKwh": 36.06,
          "monthlyKwh": 1117.8,
          "variabilityKwh": 143.39
        },
        {
          "month": 8,
          "averageDailyKwh": 31.28,
          "monthlyKwh": 969.72,
          "variabilityKwh": 107.77
        },
        {
          "month": 9,
          "averageDailyKwh": 20.06,
          "monthlyKwh": 601.86,
          "variabilityKwh": 89.7
        },
        {
          "month": 10,
          "averageDailyKwh": 10.78,
          "monthlyKwh": 334.22,
          "variabilityKwh": 72.66
        },
        {
          "month": 11,
          "averageDailyKwh": 2.3,
          "monthlyKwh": 69.02,
          "variabilityKwh": 24.8
        },
        {
          "month": 12,
          "averageDailyKwh": 0.26,
          "monthlyKwh": 8.08,
          "variabilityKwh": 5.29
        }
      ]
    },
    {
      "city_id": "selfoss",
      "city": "Selfoss",
      "latitude": 63.9331,
      "longitude": -20.9971,
      "forecast": {
        "cityId": "selfoss",
        "name": "Selfoss",
        "lat": 63.9331,
        "lon": -20.9971,
        "timezone": "Atlantic/Reykjavik",
        "featured": false,
        "targetDate": "2026-08-05",
        "expectedKwh": 10.6,
        "lowKwh": 6.7,
        "highKwh": 14.3,
        "bestWindowStart": "2026-08-05T16:00:00+00:00",
        "bestWindowEnd": "2026-08-05T20:00:00+00:00",
        "confidence": "medium",
        "fetchedAt": "2026-08-04T18:53:43.380205Z",
        "freshness": "fresh",
        "stale": false
      },
      "typical_annual_kwh": 8070.59,
      "typical_monthly": [
        {
          "month": 1,
          "averageDailyKwh": 1.29,
          "monthlyKwh": 39.98,
          "variabilityKwh": 34.8
        },
        {
          "month": 2,
          "averageDailyKwh": 7.31,
          "monthlyKwh": 204.63,
          "variabilityKwh": 70.31
        },
        {
          "month": 3,
          "averageDailyKwh": 19.78,
          "monthlyKwh": 613.17,
          "variabilityKwh": 171.5
        },
        {
          "month": 4,
          "averageDailyKwh": 33.5,
          "monthlyKwh": 1004.92,
          "variabilityKwh": 146.99
        },
        {
          "month": 5,
          "averageDailyKwh": 43.96,
          "monthlyKwh": 1362.8,
          "variabilityKwh": 196.14
        },
        {
          "month": 6,
          "averageDailyKwh": 42.21,
          "monthlyKwh": 1266.18,
          "variabilityKwh": 175.71
        },
        {
          "month": 7,
          "averageDailyKwh": 41.35,
          "monthlyKwh": 1282,
          "variabilityKwh": 151.51
        },
        {
          "month": 8,
          "averageDailyKwh": 35.5,
          "monthlyKwh": 1100.57,
          "variabilityKwh": 100.03
        },
        {
          "month": 9,
          "averageDailyKwh": 23.35,
          "monthlyKwh": 700.38,
          "variabilityKwh": 110.78
        },
        {
          "month": 10,
          "averageDailyKwh": 12.47,
          "monthlyKwh": 386.64,
          "variabilityKwh": 71.84
        },
        {
          "month": 11,
          "averageDailyKwh": 3.2,
          "monthlyKwh": 96.09,
          "variabilityKwh": 31.44
        },
        {
          "month": 12,
          "averageDailyKwh": 0.43,
          "monthlyKwh": 13.22,
          "variabilityKwh": 7.96
        }
      ]
    }
  ],
  "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/"
}