{
  "metadata": {
    "generated_at": "2026-10-18T08:16:37.629310+00:00",
    "display_start_period": "2016-04",
    "latest_delivery_date": "2026-10-19",
    "source": "日本卸電力取引所（JEPX）",
    "source_url": "https://www.jepx.jp/electricpower/market-data/spot/",
    "monthly_aggregation": "30分コマ価格の月次単純平均",
    "daily_price_aggregation": "30分コマ価格の日次単純平均",
    "daily_volume_aggregation": "全国の30分コマ入札量・約定量の日次合計",
    "interval_detail": "直近31日、9エリア・システム価格の30分コマ実績",
    "arbitrage_aggregation": "完了日48コマから月次値幅を集計。上位・下位コマの時系列実行可能性、効率、劣化、手数料等は未考慮",
    "bid_volume_scope": "全国合計。エリア別ではない",
    "actuals_only": true
  },
  "latest": {
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      "series_id": "jepx_system_jpy_kwh",
      "period": "2026-10",
      "value": 19.63,
      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    },
    "jepx_hokkaido_jpy_kwh": {
      "series_id": "jepx_hokkaido_jpy_kwh",
      "period": "2026-10",
      "value": 18.69,
      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    },
    "jepx_tohoku_jpy_kwh": {
      "series_id": "jepx_tohoku_jpy_kwh",
      "period": "2026-10",
      "value": 21.17,
      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    },
    "jepx_tokyo_jpy_kwh": {
      "series_id": "jepx_tokyo_jpy_kwh",
      "period": "2026-10",
      "value": 23.89,
      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    },
    "jepx_chubu_jpy_kwh": {
      "series_id": "jepx_chubu_jpy_kwh",
      "period": "2026-10",
      "value": 22.77,
      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    },
    "jepx_hokuriku_jpy_kwh": {
      "series_id": "jepx_hokuriku_jpy_kwh",
      "period": "2026-10",
      "value": 16.48,
      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    },
    "jepx_kansai_jpy_kwh": {
      "series_id": "jepx_kansai_jpy_kwh",
      "period": "2026-10",
      "value": 16.16,
      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    },
    "jepx_chugoku_jpy_kwh": {
      "series_id": "jepx_chugoku_jpy_kwh",
      "period": "2026-10",
      "value": 13.89,
      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    },
    "jepx_shikoku_jpy_kwh": {
      "series_id": "jepx_shikoku_jpy_kwh",
      "period": "2026-10",
      "value": 11.24,
      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    },
    "jepx_kyushu_jpy_kwh": {
      "series_id": "jepx_kyushu_jpy_kwh",
      "period": "2026-10",
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      "unit": "円/kWh",
      "status": "月途中",
      "valid_interval_count": 912,
      "expected_interval_count": 1488,
      "source_name": "日本卸電力取引所（JEPX）",
      "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
    }
  },
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      "2021-02",
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      "2022-01",
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      "2024-01",
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      "2024-05",
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      "2024-07",
      "2024-08",
      "2024-09",
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      "2024-11",
      "2024-12",
      "2025-01",
      "2025-02",
      "2025-03",
      "2025-04",
      "2025-05",
      "2025-06",
      "2025-07",
      "2025-08",
      "2025-09",
      "2025-10",
      "2025-11",
      "2025-12",
      "2026-01",
      "2026-02",
      "2026-03",
      "2026-04",
      "2026-05",
      "2026-06",
      "2026-07",
      "2026-08",
      "2026-09",
      "2026-10"
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          "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
        },
        {
          "series_id": "jepx_kyushu_jpy_kwh",
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          "daily_max_spread_mean_jpy_kwh": 21.72,
          "two_hour_price_spread_mean_jpy_kwh": 19.97,
          "two_hour_gross_margin_mean_jpy_kw_cycle": 39.94,
          "monthly_range_jpy_kwh": 44.08,
          "complete_day_count": 19,
          "source_name": "日本卸電力取引所（JEPX）",
          "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
        },
        {
          "series_id": "jepx_shikoku_jpy_kwh",
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          "daily_max_spread_mean_jpy_kwh": 20.16,
          "two_hour_price_spread_mean_jpy_kwh": 18.5,
          "two_hour_gross_margin_mean_jpy_kw_cycle": 37.0,
          "monthly_range_jpy_kwh": 37.5,
          "complete_day_count": 19,
          "source_name": "日本卸電力取引所（JEPX）",
          "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
        },
        {
          "series_id": "jepx_system_jpy_kwh",
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          "daily_max_spread_mean_jpy_kwh": 27.13,
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          "complete_day_count": 19,
          "source_name": "日本卸電力取引所（JEPX）",
          "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
        },
        {
          "series_id": "jepx_tohoku_jpy_kwh",
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          "daily_max_spread_mean_jpy_kwh": 31.71,
          "two_hour_price_spread_mean_jpy_kwh": 29.66,
          "two_hour_gross_margin_mean_jpy_kw_cycle": 59.31,
          "monthly_range_jpy_kwh": 50.0,
          "complete_day_count": 19,
          "source_name": "日本卸電力取引所（JEPX）",
          "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
        },
        {
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          "complete_day_count": 19,
          "source_name": "日本卸電力取引所（JEPX）",
          "source_url": "https://www.jepx.jp/electricpower/market-data/spot/"
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      ],
      "definitions": {
        "daily_max_spread_mean_jpy_kwh": "日別最高値−最低値の月平均",
        "two_hour_price_spread_mean_jpy_kwh": "各日の上位4コマ平均−下位4コマ平均の月平均",
        "two_hour_gross_margin_mean_jpy_kw_cycle": "1kW・2時間を上下位4コマで売買した100%効率の理論粗利月平均",
        "monthly_range_jpy_kwh": "月内全30分コマの最高値−最低値"
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      "2026-10-05",
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      "2026-10-08",
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      "2026-10-10",
      "2026-10-11",
      "2026-10-12",
      "2026-10-13",
      "2026-10-14",
      "2026-10-15",
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    },
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    },
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    },
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    },
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  ]
}