{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:47.701829Z",
  "location": {
    "city_id": "reykjavik",
    "city": "Reykjavík",
    "country_code": "IS",
    "country": "Iceland",
    "latitude": 64.1355,
    "longitude": -21.8954,
    "timezone": "Atlantic/Reykjavik"
  },
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "tomorrow_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_year": {
    "lat": 64.1355,
    "lon": -21.8954,
    "annualKwh": 7095.55,
    "averageDailyKwh": 19.44,
    "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
      }
    ]
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 4,
    "country_city_count": 4,
    "annual_yield_kwh_per_kwp": 709.5550000000001
  },
  "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/"
}