{
  "schema_version": "1.0",
  "generated_at": "2026-08-04T18:53:46.437092Z",
  "location": {
    "city_id": "vasteras",
    "city": "Västerås",
    "country_code": "SE",
    "country": "Sweden",
    "latitude": 59.6162,
    "longitude": 16.5528,
    "timezone": "Europe/Stockholm"
  },
  "reference_system": {
    "installedKwp": 10,
    "orientation": "S",
    "tiltDeg": 35,
    "systemLossPct": 14
  },
  "tomorrow_forecast": {
    "cityId": "vasteras",
    "name": "Västerås",
    "lat": 59.6162,
    "lon": 16.5528,
    "timezone": "Europe/Stockholm",
    "featured": false,
    "targetDate": "2026-08-05",
    "expectedKwh": 7.5,
    "lowKwh": 4.7,
    "highKwh": 10.2,
    "bestWindowStart": "2026-08-05T09:00:00+02:00",
    "bestWindowEnd": "2026-08-05T13:00:00+02:00",
    "confidence": "medium",
    "fetchedAt": "2026-08-04T18:53:46.437092Z",
    "freshness": "fresh",
    "stale": false
  },
  "typical_year": {
    "lat": 59.6162,
    "lon": 16.5528,
    "annualKwh": 9756.92,
    "averageDailyKwh": 26.73,
    "monthly": [
      {
        "month": 1,
        "averageDailyKwh": 4.85,
        "monthlyKwh": 150.49,
        "variabilityKwh": 39.69
      },
      {
        "month": 2,
        "averageDailyKwh": 13.36,
        "monthlyKwh": 374.1,
        "variabilityKwh": 101.14
      },
      {
        "month": 3,
        "averageDailyKwh": 29.13,
        "monthlyKwh": 903.17,
        "variabilityKwh": 196.91
      },
      {
        "month": 4,
        "averageDailyKwh": 41.02,
        "monthlyKwh": 1230.59,
        "variabilityKwh": 126.69
      },
      {
        "month": 5,
        "averageDailyKwh": 44.31,
        "monthlyKwh": 1373.63,
        "variabilityKwh": 172.51
      },
      {
        "month": 6,
        "averageDailyKwh": 47.46,
        "monthlyKwh": 1423.67,
        "variabilityKwh": 116.73
      },
      {
        "month": 7,
        "averageDailyKwh": 44.72,
        "monthlyKwh": 1386.24,
        "variabilityKwh": 119.19
      },
      {
        "month": 8,
        "averageDailyKwh": 38.08,
        "monthlyKwh": 1180.58,
        "variabilityKwh": 152.08
      },
      {
        "month": 9,
        "averageDailyKwh": 29.62,
        "monthlyKwh": 888.49,
        "variabilityKwh": 112.2
      },
      {
        "month": 10,
        "averageDailyKwh": 17.65,
        "monthlyKwh": 547.14,
        "variabilityKwh": 112.04
      },
      {
        "month": 11,
        "averageDailyKwh": 6.79,
        "monthlyKwh": 203.72,
        "variabilityKwh": 60.13
      },
      {
        "month": 12,
        "averageDailyKwh": 3.07,
        "monthlyKwh": 95.1,
        "variabilityKwh": 33.3
      }
    ]
  },
  "comparison": {
    "annual_output_rank_in_country_sample": 3,
    "country_city_count": 7,
    "annual_yield_kwh_per_kwp": 975.692
  },
  "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/"
}