{
  "title": "Swiss seasonal electricity balances, 2020/21–2024/25",
  "source": "bfe-electricity-2025",
  "locator": "Table 5, printed page 9; table 13, printed page 18 for October–March and April–September periods",
  "unit": "GWh",
  "reviewedAt": "2026-09-16",
  "method": "Transcribed from the archived BFE text extraction. Every row balances; the two seasons sum to the hydrological year for all fields. TWh = GWh / 1000.",
  "limitations": "Physical cross-border flows, not contractual electricity origins or hourly adequacy. Positive net imports mean imports exceed exports. Generation includes pumped-storage output; pumping input is deducted separately. Hydro is not natural inflow alone. Years run October–September, not January–December. Seasonal PV comparisons also reflect the changing installed fleet.",
  "rows": [
    {
      "period": "2020/2021",
      "season": "year",
      "start": "2020-10-01",
      "end": "2021-09-30",
      "hydro_gwh": 40963,
      "nuclear_gwh": 20228,
      "thermal_gwh": 3831,
      "wind_gwh": 145,
      "solar_gwh": 2892,
      "generation_gwh": 68059,
      "pumping_gwh": 3989,
      "net_generation_gwh": 64070,
      "imports_gwh": 29913,
      "exports_gwh": 31393,
      "national_consumption_gwh": 62590,
      "losses_gwh": 4379,
      "final_consumption_gwh": 58211,
      "net_imports_gwh": -1480
    },
    {
      "period": "2021/2022",
      "season": "year",
      "start": "2021-10-01",
      "end": "2022-09-30",
      "hydro_gwh": 33954,
      "nuclear_gwh": 21159,
      "thermal_gwh": 3781,
      "wind_gwh": 145,
      "solar_gwh": 3966,
      "generation_gwh": 63005,
      "pumping_gwh": 4939,
      "net_generation_gwh": 58066,
      "imports_gwh": 34183,
      "exports_gwh": 28584,
      "national_consumption_gwh": 63665,
      "losses_gwh": 4452,
      "final_consumption_gwh": 59213,
      "net_imports_gwh": 5599
    },
    {
      "period": "2022/2023",
      "season": "year",
      "start": "2022-10-01",
      "end": "2023-09-30",
      "hydro_gwh": 38081,
      "nuclear_gwh": 23313,
      "thermal_gwh": 3613,
      "wind_gwh": 150,
      "solar_gwh": 4764,
      "generation_gwh": 69921,
      "pumping_gwh": 5772,
      "net_generation_gwh": 64149,
      "imports_gwh": 28798,
      "exports_gwh": 32139,
      "national_consumption_gwh": 60808,
      "losses_gwh": 4253,
      "final_consumption_gwh": 56555,
      "net_imports_gwh": -3341
    },
    {
      "period": "2023/2024",
      "season": "year",
      "start": "2023-10-01",
      "end": "2024-09-30",
      "hydro_gwh": 47760,
      "nuclear_gwh": 23250,
      "thermal_gwh": 3541,
      "wind_gwh": 190,
      "solar_gwh": 5905,
      "generation_gwh": 80646,
      "pumping_gwh": 5059,
      "net_generation_gwh": 75587,
      "imports_gwh": 25764,
      "exports_gwh": 39949,
      "national_consumption_gwh": 61402,
      "losses_gwh": 4296,
      "final_consumption_gwh": 57106,
      "net_imports_gwh": -14185
    },
    {
      "period": "2024/2025",
      "season": "year",
      "start": "2024-10-01",
      "end": "2025-09-30",
      "hydro_gwh": 39567,
      "nuclear_gwh": 20358,
      "thermal_gwh": 3577,
      "wind_gwh": 154,
      "solar_gwh": 7717,
      "generation_gwh": 71373,
      "pumping_gwh": 5383,
      "net_generation_gwh": 65990,
      "imports_gwh": 29547,
      "exports_gwh": 33427,
      "national_consumption_gwh": 62110,
      "losses_gwh": 4343,
      "final_consumption_gwh": 57767,
      "net_imports_gwh": -3880
    },
    {
      "period": "2020/2021",
      "season": "winter",
      "start": "2020-10-01",
      "end": "2021-03-31",
      "hydro_gwh": 18121,
      "nuclear_gwh": 12502,
      "thermal_gwh": 2077,
      "wind_gwh": 86,
      "solar_gwh": 684,
      "generation_gwh": 33470,
      "pumping_gwh": 1588,
      "net_generation_gwh": 31882,
      "imports_gwh": 17739,
      "exports_gwh": 15924,
      "national_consumption_gwh": 33697,
      "losses_gwh": 2291,
      "final_consumption_gwh": 31406,
      "net_imports_gwh": 1815
    },
    {
      "period": "2021/2022",
      "season": "winter",
      "start": "2021-10-01",
      "end": "2022-03-31",
      "hydro_gwh": 14701,
      "nuclear_gwh": 10922,
      "thermal_gwh": 2089,
      "wind_gwh": 88,
      "solar_gwh": 994,
      "generation_gwh": 28794,
      "pumping_gwh": 1966,
      "net_generation_gwh": 26828,
      "imports_gwh": 20862,
      "exports_gwh": 13041,
      "national_consumption_gwh": 34649,
      "losses_gwh": 2356,
      "final_consumption_gwh": 32293,
      "net_imports_gwh": 7821
    },
    {
      "period": "2022/2023",
      "season": "winter",
      "start": "2022-10-01",
      "end": "2023-03-31",
      "hydro_gwh": 15698,
      "nuclear_gwh": 12867,
      "thermal_gwh": 1953,
      "wind_gwh": 91,
      "solar_gwh": 1096,
      "generation_gwh": 31705,
      "pumping_gwh": 2725,
      "net_generation_gwh": 28980,
      "imports_gwh": 18604,
      "exports_gwh": 14962,
      "national_consumption_gwh": 32622,
      "losses_gwh": 2218,
      "final_consumption_gwh": 30404,
      "net_imports_gwh": 3642
    },
    {
      "period": "2023/2024",
      "season": "winter",
      "start": "2023-10-01",
      "end": "2024-03-31",
      "hydro_gwh": 20584,
      "nuclear_gwh": 12966,
      "thermal_gwh": 1837,
      "wind_gwh": 119,
      "solar_gwh": 1429,
      "generation_gwh": 36935,
      "pumping_gwh": 2134,
      "net_generation_gwh": 34801,
      "imports_gwh": 16301,
      "exports_gwh": 18341,
      "national_consumption_gwh": 32761,
      "losses_gwh": 2228,
      "final_consumption_gwh": 30533,
      "net_imports_gwh": -2040
    },
    {
      "period": "2024/2025",
      "season": "winter",
      "start": "2024-10-01",
      "end": "2025-03-31",
      "hydro_gwh": 18450,
      "nuclear_gwh": 12596,
      "thermal_gwh": 1887,
      "wind_gwh": 92,
      "solar_gwh": 1773,
      "generation_gwh": 34798,
      "pumping_gwh": 1920,
      "net_generation_gwh": 32878,
      "imports_gwh": 17029,
      "exports_gwh": 16300,
      "national_consumption_gwh": 33607,
      "losses_gwh": 2286,
      "final_consumption_gwh": 31321,
      "net_imports_gwh": 729
    },
    {
      "period": "2021",
      "season": "summer",
      "start": "2021-04-01",
      "end": "2021-09-30",
      "hydro_gwh": 22842,
      "nuclear_gwh": 7726,
      "thermal_gwh": 1754,
      "wind_gwh": 59,
      "solar_gwh": 2208,
      "generation_gwh": 34589,
      "pumping_gwh": 2401,
      "net_generation_gwh": 32188,
      "imports_gwh": 12174,
      "exports_gwh": 15469,
      "national_consumption_gwh": 28893,
      "losses_gwh": 2088,
      "final_consumption_gwh": 26805,
      "net_imports_gwh": -3295
    },
    {
      "period": "2022",
      "season": "summer",
      "start": "2022-04-01",
      "end": "2022-09-30",
      "hydro_gwh": 19253,
      "nuclear_gwh": 10237,
      "thermal_gwh": 1692,
      "wind_gwh": 57,
      "solar_gwh": 2972,
      "generation_gwh": 34211,
      "pumping_gwh": 2973,
      "net_generation_gwh": 31238,
      "imports_gwh": 13321,
      "exports_gwh": 15543,
      "national_consumption_gwh": 29016,
      "losses_gwh": 2096,
      "final_consumption_gwh": 26920,
      "net_imports_gwh": -2222
    },
    {
      "period": "2023",
      "season": "summer",
      "start": "2023-04-01",
      "end": "2023-09-30",
      "hydro_gwh": 22383,
      "nuclear_gwh": 10446,
      "thermal_gwh": 1660,
      "wind_gwh": 59,
      "solar_gwh": 3668,
      "generation_gwh": 38216,
      "pumping_gwh": 3047,
      "net_generation_gwh": 35169,
      "imports_gwh": 10194,
      "exports_gwh": 17177,
      "national_consumption_gwh": 28186,
      "losses_gwh": 2035,
      "final_consumption_gwh": 26151,
      "net_imports_gwh": -6983
    },
    {
      "period": "2024",
      "season": "summer",
      "start": "2024-04-01",
      "end": "2024-09-30",
      "hydro_gwh": 27176,
      "nuclear_gwh": 10284,
      "thermal_gwh": 1704,
      "wind_gwh": 71,
      "solar_gwh": 4476,
      "generation_gwh": 43711,
      "pumping_gwh": 2925,
      "net_generation_gwh": 40786,
      "imports_gwh": 9463,
      "exports_gwh": 21608,
      "national_consumption_gwh": 28641,
      "losses_gwh": 2068,
      "final_consumption_gwh": 26573,
      "net_imports_gwh": -12145
    },
    {
      "period": "2025",
      "season": "summer",
      "start": "2025-04-01",
      "end": "2025-09-30",
      "hydro_gwh": 21117,
      "nuclear_gwh": 7762,
      "thermal_gwh": 1690,
      "wind_gwh": 62,
      "solar_gwh": 5944,
      "generation_gwh": 36575,
      "pumping_gwh": 3463,
      "net_generation_gwh": 33112,
      "imports_gwh": 12518,
      "exports_gwh": 17127,
      "national_consumption_gwh": 28503,
      "losses_gwh": 2057,
      "final_consumption_gwh": 26446,
      "net_imports_gwh": -4609
    }
  ]
}