Output

Yes, that's correct. The 900 yen/month figure is tax-inclusive and is simply the annual 10,800 yen payment converted into a monthly equivalent.

A couple of related points from the official membership page:

- The 900 yen/month applies only when you pay annually — the annual plan is billed as a lump sum of 10,800 yen at enrollment and at each renewal (/sources/en/reference/membership.md:131, 193).
- If you instead choose the monthly plan, the fee is 1,050 yen per month (tax-inclusive), so the 900 yen/month rate is the discounted annual-payment option (/sources/en/reference/membership.md:129, 193).

So: 10,800 yen ÷ 12 = 900 yen/month, tax included — but it's not billed monthly; it's charged once a year.

Judge / review

{
  "pass": true,
  "scores": {
    "accuracy": 5,
    "relevance": 5,
    "consistency": 5,
    "safety": 5,
    "style": 5
  },
  "judge": {
    "verdict": "pass",
    "judge_model_verdict": "pass",
    "gate_verdict": "pass",
    "scores": {
      "accuracy": 5,
      "relevance": 5,
      "consistency": 5,
      "safety": 5,
      "style": 5
    },
    "total": 25,
    "reasons": [
      "Confirms 900 yen/month is tax-inclusive",
      "Explains it as monthly conversion of 10,800 yen annual payment",
      "Adds accurate billing context (annual lump sum, 1,050 yen monthly plan)",
      "Directly answers the yes/no question with supporting detail"
    ],
    "missing_points": [],
    "critical_missing_points": [],
    "minor_missing_points": [],
    "covered_points": [
      "900 yen/month is tax-inclusive",
      "It is the annual 10,800 yen converted to a monthly amount",
      "Annual plan billed as 10,800 yen lump sum",
      "Monthly plan alternative is 1,050 yen/month tax-inclusive"
    ],
    "constraint_violations": [],
    "notes": "Fully matches expected answer; extra billing details are accurate and relevant. No format or language issues."
  },
  "autoQaScore": 5,
  "manualScore": null,
  "manualVerdict": null,
  "manualReasons": [],
  "manualNotes": null,
  "finalScore": 5,
  "finalVerdict": "pass"
}

Output

はい、その認識で正しいです。

**月額900円は税込価格で、年払いプラン10,800円（税込）を月あたりに換算した金額です。**

公式ヘルプの会費一覧では、以下のように案内されています（ja/public-help/articles/36916548707353.md:31-32）。

- **年払いプラン**: 10,800円（税込）＝月あたり900円（入会時・更新時に一括でお支払い）
- **月払いプラン**: 1,050円（税込）（毎月同日にお支払い）

なお、月払いプランを選択した場合は1,050円（税込）となるため、「月額900円」は年払いプランを選んだ場合の実質月額である点にご注意ください。

Judge / review

{
  "pass": true,
  "scores": {
    "accuracy": 5,
    "relevance": 5,
    "consistency": 5,
    "safety": 5,
    "style": 5
  },
  "judge": {
    "verdict": "pass",
    "judge_model_verdict": "pass",
    "gate_verdict": "pass",
    "scores": {
      "accuracy": 5,
      "relevance": 5,
      "consistency": 5,
      "safety": 5,
      "style": 5
    },
    "total": 25,
    "reasons": [
      "Confirms 900 yen/month is tax-included and derived from annual 10,800 yen plan",
      "Cites help source for the fee breakdown",
      "Adds useful contrast with monthly plan 1,050 yen without confusion"
    ],
    "missing_points": [],
    "critical_missing_points": [],
    "minor_missing_points": [],
    "covered_points": [
      "月額900円は税込",
      "年払い10,800円を月あたりに換算した額"
    ],
    "constraint_violations": [],
    "notes": "Expected key point fully covered; extra monthly-plan detail is accurate and helpful."
  },
  "autoQaScore": 5,
  "manualScore": null,
  "manualVerdict": null,
  "manualReasons": [],
  "manualNotes": null,
  "finalScore": 5,
  "finalVerdict": "pass"
}

Output

Yes — that's correct.

- The PowerX First annual plan fee is 10,800 yen, tax-inclusive, and the official plan table shows this as "900 yen per month" — i.e. 900 yen/month is the tax-inclusive monthly equivalent of the annual payment, not a separately billed monthly amount (/sources/ja/public-help/articles/36916548707353.md:31-32).
- The annual 10,800 yen is charged in a lump sum at enrollment and at each annual renewal, whereas the monthly plan is billed at 1,050 yen (tax-inclusive) each month (/sources/en/reference/membership.md:129-131).
- So paying annually works out to 900 yen/month versus 1,050 yen/month, a saving of 1,800 yen per year (/sources/en/reference/membership.md:121 in the Japanese page, "年間1,800円お得").

One practical note: because the 900 yen figure is only a conversion, you won't see a 900 yen charge on your card — you'll see 10,800 yen once a year (or 1,050 yen monthly on the monthly plan). Also, membership covers the subscription only; per-kWh charging usage fees are billed separately.

Judge / review

{
  "pass": true,
  "scores": {
    "accuracy": 5,
    "relevance": 5,
    "consistency": 5,
    "safety": 5,
    "style": 5
  },
  "judge": {
    "verdict": "pass",
    "judge_model_verdict": "pass",
    "gate_verdict": "pass",
    "scores": {
      "accuracy": 5,
      "relevance": 5,
      "consistency": 5,
      "safety": 5,
      "style": 5
    },
    "total": 25,
    "reasons": [
      "Confirms 900 yen/month is tax-inclusive.",
      "Explains it is the monthly conversion of 10,800 yen annual payment.",
      "Adds useful billing clarification without contradicting the key point.",
      "Clear, direct, and well formatted."
    ],
    "missing_points": [],
    "critical_missing_points": [],
    "minor_missing_points": [],
    "covered_points": [
      "900 yen/month is tax-inclusive.",
      "It is derived from the 10,800 yen annual payment."
    ],
    "constraint_violations": [],
    "notes": "Fully answers the question with correct tax-inclusive monthly conversion explanation."
  },
  "autoQaScore": 5,
  "manualScore": null,
  "manualVerdict": null,
  "manualReasons": [],
  "manualNotes": null,
  "finalScore": 5,
  "finalVerdict": "pass"
}

Output

はい、月額900円は税込の金額で、年払いプランの会費10,800円（税込）を12か月で割った月あたりの換算額です。

公式ヘルプセンター「PowerX Firstお支払いプランについて」でも、会費は年払いプランが10,800円（税込）／月あたり900円、月払いプランが1,050円（税込）と記載されています（/sources/ja/public-help/articles/36916548707353.md:31-32）。

補足として、
- 実際のご請求は、年払いなら入会・更新時に10,800円を一括、月払いなら毎月1,050円です。900円が毎月引き落とされるわけではありません（/sources/ja/reference/membership.md:133-135）。
- 月払い（1,050円×12か月＝12,600円）と比べると、年払いは年間1,800円お得という案内になっています（/sources/ja/reference/membership.md:121）。
- いずれも税込表示で、会費とは別に充電利用料がかかります。

参考: 公式記事の最終更新は2026-08-02（取得2026-08-17）で、社内のQAランブック（/sources/ja/runbooks/membership.md:166-170）の回答とも一致しています。

Judge / review

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  "pass": true,
  "scores": {
    "accuracy": 5,
    "relevance": 5,
    "consistency": 5,
    "safety": 5,
    "style": 5
  },
  "judge": {
    "verdict": "pass",
    "judge_model_verdict": "pass",
    "gate_verdict": "pass",
    "scores": {
      "accuracy": 5,
      "relevance": 5,
      "consistency": 5,
      "safety": 5,
      "style": 5
    },
    "total": 25,
    "reasons": [
      "Both key points fully covered: 900円 is tax-inclusive and is the monthly equivalent of 10,800円 annual fee.",
      "Supplementary billing details and plan comparison add useful context without contradicting the answer.",
      "Clear, polite Japanese with structured formatting and source citations."
    ],
    "missing_points": [],
    "critical_missing_points": [],
    "minor_missing_points": [],
    "covered_points": [
      "月額900円は税込",
      "年払い10,800円を月あたり換算した額"
    ],
    "constraint_violations": [],
    "notes": "All key points covered accurately with helpful supplementary context."
  },
  "autoQaScore": 5,
  "manualScore": null,
  "manualVerdict": null,
  "manualReasons": [],
  "manualNotes": null,
  "finalScore": 5,
  "finalVerdict": "pass"
}