{
  "summary": "この章は観測中（良否の基準なし）：観測開始2026-08-30・系列3本・最新確定2026-09-23。冷却度日（5地点平均・基準18.3℃）は4（2026-09-23確定）。（出典：気象庁・経済産業省／更新 2026-09-24 18:02 JST）",
  "cite_as": "AIライフライン データセンター章（確定日 2026-09-23）https://ai-lifeline.org/jp/datacenter/",
  "generated": "2026-09-24 18:02",
  "candidates": [
    {
      "status": "candidate_unobserved",
      "name": "建築着工統計「情報通信業用」床面積（DC非特定の参考値）",
      "reason": "参考値としての掲載可否は発行人裁定待ち"
    },
    {
      "status": "candidate_unobserved",
      "name": "2025年新用途分類のDC相当区分の有無",
      "reason": "新分類表の原本確認待ち"
    }
  ],
  "status": "observing",
  "cannot_say": [
    "国内データセンターの電力消費量・施設数・建設中の件数（該当する公的統計が無く、施設単位は扱わない）",
    "変圧器の納期（リードタイム）そのもの（生産金額は供給側の代理指標であり、待ち期間ではない）",
    "冷却度日や生産金額の水準が「良い・悪い」に当たるか、および変圧器系列の米国版（受注残）・冷却度日の EU 版（基準温度が異なる）との水準比較"
  ],
  "series": {
    "transformer_capacity_index": {
      "name": "変圧器の生産能力指数（標準変圧器・2020年=100・月次）— 参考系列",
      "reference": true,
      "update_method_note": "月次手動更新。現行月次の能力指数はMETI直取得（AWS WAF遮断・自動不可）にしかなく、e-Stat APIの能力指数表は年次スコープ（現行月次なし）のため（2026-08-30確定）。",
      "data_status": "live",
      "source": {
        "url": "https://www.meti.go.jp/statistics/tyo/seidou/result-3.html",
        "license": "政府標準利用規約（第2.0版・出典明記＋加工明記で利用可）",
        "name": "経済産業省 生産動態統計（機械統計）参考・生産能力指数"
      },
      "nonstandard": [
        {
          "period": "2026-01",
          "value": 115.2,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-02",
          "value": 115.2,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-03",
          "value": 115.2,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-04",
          "value": 60.7,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-05",
          "value": 60.7,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-06",
          "value": 60.7,
          "fetched_at": "2026-08-30 07:06"
        }
      ],
      "last_success": "2026-08-30",
      "update_method": "manual",
      "monthly": [
        {
          "period": "2026-01",
          "value": 100.7,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-02",
          "value": 100.7,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-03",
          "value": 100.7,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-04",
          "value": 89.8,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-05",
          "value": 89.8,
          "fetched_at": "2026-08-30 07:06"
        },
        {
          "period": "2026-06",
          "value": 89.8,
          "fetched_at": "2026-08-30 07:06"
        }
      ],
      "currency_note": "経産省 機械統計 参考・生産能力指数（確報は約2か月遅れ）。更新はExcelの手動配置による（自動取得はMETIのWAFで不可）。",
      "reference_note": "★参考系列。主系列（生産金額の年次確定値）の代替ではない。測定対象が異なる（生産金額でなく生産能力の水準を示す指数）。非標準変圧器の指数はJSONの nonstandard に併載。"
    },
    "transformer_production": {
      "name": "変圧器の生産金額（経産省 生産動態統計・月次・百万円）— リードタイムの代理指標",
      "proxy_note": "公的な月次リードタイム統計は存在しない（2026-08-30確認）。本系列は供給側の生産金額であり、米国版の受注残（需要側の待ち行列）とは概念が異なるため各国内推移のみ比較する。値=各変圧器区分の生産金額_百万円の月次合算。",
      "data_status": "live",
      "source": {
        "url": "https://www.e-stat.go.jp/stat-search/database?toukei=00550200",
        "license": "政府標準利用規約（出典明記で利用可）",
        "name": "METI, Current Production Statistics (経産省「生産動態統計」機械統計)"
      },
      "monthly": [
        {
          "period": "2024-01",
          "value": 17284.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-02",
          "value": 19797.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-03",
          "value": 21159.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-04",
          "value": 17302.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-05",
          "value": 18853.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-06",
          "value": 19252.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-07",
          "value": 19002.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-08",
          "value": 18689.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-09",
          "value": 20622.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-10",
          "value": 21437.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-11",
          "value": 21117.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2024-12",
          "value": 20815.0,
          "fetched_at": "2026-09-14 18:02"
        },
        {
          "period": "2025-01",
          "value": 19603.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-02",
          "value": 21095.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-03",
          "value": 22278.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-04",
          "value": 19195.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-05",
          "value": 18299.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-06",
          "value": 21302.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-07",
          "value": 19620.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-08",
          "value": 19632.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-09",
          "value": 21597.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-10",
          "value": 24327.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-11",
          "value": 22985.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "period": "2025-12",
          "value": 21369.0,
          "fetched_at": "2026-09-24 18:02"
        }
      ],
      "currency_note": "本系列は年次確定値（生産動態統計の年次時系列表）。現行年の月次は公的な機械可読表が存在しないことを2026-08-30に確認したため、年次表を正とする。年度末＋約11か月後に前年ぶんが公表される（年次公表待ち）。最新の観測月ラベルを確認のこと。"
    },
    "cooling_degree_days": {
      "source": {
        "url": "https://www.data.jma.go.jp/obd/stats/etrn/",
        "license": "出典明記（「出典：気象庁ホームページ」）で商用含め利用可。大量・高頻度アクセスは控えめに＝日次1回・5地点厳守",
        "name": "Japan Meteorological Agency (気象庁「過去の気象データ」)"
      },
      "daily": [
        {
          "date": "2026-08-01",
          "value": 10.9,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-02",
          "value": 11.2,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-03",
          "value": 9.6,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-04",
          "value": 9.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-05",
          "value": 10.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-06",
          "value": 10.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-07",
          "value": 11.7,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-08",
          "value": 10.4,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-09",
          "value": 9.6,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-10",
          "value": 9.3,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-11",
          "value": 8.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-12",
          "value": 7.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-13",
          "value": 8.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-14",
          "value": 8.9,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-15",
          "value": 9.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-16",
          "value": 8.6,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-17",
          "value": 9.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-18",
          "value": 9.5,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-19",
          "value": 9.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-20",
          "value": 10.5,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-21",
          "value": 10.4,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-22",
          "value": 10.4,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-23",
          "value": 10.4,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-24",
          "value": 11.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-25",
          "value": 10.7,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-26",
          "value": 10.9,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-27",
          "value": 9.6,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-28",
          "value": 8.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-29",
          "value": 7.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-30",
          "value": 8.6,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-08-31",
          "value": 8.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-01",
          "value": 8.7,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-02",
          "value": 8.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-03",
          "value": 7.5,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-04",
          "value": 4.4,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-05",
          "value": 5.3,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-06",
          "value": 5.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-07",
          "value": 5.4,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-08",
          "value": 6.4,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-09",
          "value": 5.2,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-10",
          "value": 3.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-11",
          "value": 3.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-12",
          "value": 6.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-13",
          "value": 6.5,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-14",
          "value": 6.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-15",
          "value": 5.4,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-16",
          "value": 3.9,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-17",
          "value": 5.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-18",
          "value": 5.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-19",
          "value": 6.0,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-20",
          "value": 5.9,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-21",
          "value": 5.8,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-22",
          "value": 6.1,
          "fetched_at": "2026-09-24 18:02"
        },
        {
          "date": "2026-09-23",
          "value": 4.0,
          "fetched_at": "2026-09-24 18:02"
        }
      ],
      "definition_note": "CDD=max(0, 日平均気温−18.3) の5地点平均（小数1桁）。基準65°Fは米国版と揃えて水準比較を可能にする選択（省エネ法の暖房度日基準18℃とほぼ同水準）。国内建築慣行の冷房度日（24℃基準）とは異なる。ASHRAE度日法・独自定義ではない。",
      "name": "冷却度日（基準18.3℃=65°F・米国版CPCと同一基準・5地点平均：東京/大阪/名古屋/福岡/札幌）",
      "data_status": "live"
    }
  },
  "status_note": "観測のみ：判定基準は定義していない。地域集計のみ・施設単位/事業者名は扱わない。",
  "can_say": [
    "国内5地点（東京・大阪・名古屋・福岡・札幌）平均の冷却度日（基準18.3℃）の日次推移＝気候が冷却に求める負荷の大きさ",
    "変圧器の生産金額（経産省 生産動態統計・月次）と生産能力指数の推移＝供給側の部材の動き",
    "国内にデータセンターの建設・敷地に関する公的月次統計が存在しないという事実（2026-08-30 確認）"
  ],
  "frequency_note": "冷却度日は日次・変圧器は月次（公的統計の公表周期）の混合章。",
  "siting_note": "敷地・建設容量の系列は無い：米国版のCensus VIP「Data center」区分に相当する公的月次統計が日本には存在しない（建築着工統計の分類一覧で確認・2026-08-30）。",
  "region": "jp",
  "answer_line": "この章は観測中（良否の基準なし）：観測開始2026-08-30・系列3本・最新確定2026-09-23。冷却度日（5地点平均・基準18.3℃）は4（2026-09-23確定）。（出典：気象庁・経済産業省／更新 2026-09-24 18:02 JST）",
  "answer_line_date": "2026-09-23",
  "answer_kind": "observing",
  "headline_answer": {
    "series": "cooling_degree_days",
    "label": "冷却度日（5地点平均・基準18.3℃）",
    "value": 4.0,
    "unit": "",
    "date": "2026-09-23",
    "threshold": null
  },
  "faq": [
    {
      "q": "日本の冷却度日（5地点平均）は直近でどのくらいか",
      "a": "2026-09-23の冷却度日は4です（基準18.3℃＝65°F・東京／大阪／名古屋／福岡／札幌の平均・米国版と同一基準）。出典：気象庁「過去の気象データ」の自前計算（日次）。"
    },
    {
      "q": "変圧器の生産金額の最新確定値はいくらか",
      "a": "2025-12（年次確定値）で21,369百万円です。出典：経済産業省 生産動態統計（e-Stat）。参考系列の変圧器生産能力指数（標準変圧器・2020年=100・手動更新）は2026-06に89.8。"
    },
    {
      "q": "このデータの出所と更新頻度は",
      "a": "冷却度日は日次、変圧器の生産金額は年次確定値、生産能力指数は月次（手動更新）の混合章です（観測開始 2026-08-30）。最終更新 2026-09-24 18:02 JST・定義書 docs/指標定義_第6章_データセンター_JP.md v1.0・機械可読データ https://ai-lifeline.org/jp/api/datacenter_jp.json"
    },
    {
      "q": "このデータで言えないことは何か",
      "a": "この章から言えないこと（台帳 v1.0・2026-09-05 承認・章の方法節に全文）：国内データセンターの電力消費量・施設数・建設中の件数（該当する公的統計が無く、施設単位は扱わない）／変圧器の納期（リードタイム）そのもの（生産金額は供給側の代理指標であり、待ち期間ではない）／冷却度日や生産金額の水準が「良い・悪い」に当たるか、および変圧器系列の米国版（受注残）・冷却度日の EU 版（基準温度が異なる）との水準比較。"
    }
  ],
  "citation": {
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    "api": "https://ai-lifeline.org/jp/api/datacenter_jp.json",
    "last_confirmed": "2026-09-23",
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    "generated": "2026-09-24 18:02",
    "observation_start": "2026-08-30",
    "series_count": 3,
    "series_not_yet_measured": 0,
    "title_short": "冷却度日4（9/23確定）",
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    "ledger_version": "v1.1-2026-09-06",
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}