英検1級・AIデータセンターと電力需要【2026】読解・要約・英作文・面接8問

結論：英検1級のAIデータセンター問題では、年間発電量と必要な時間帯の供給、全国平均と地域の系統負荷、投資公約と実際の成果を区別します。慶英会ではIEAの2026年10月公表資料を踏まえ、独自長文・リスニング・英語要約・意見論述・二次面接を横断して学べる教材を制作しました。

参考：IEA｜Powering Artificial Intelligence（2026年10月14日）、IEA｜Key Questions on Energy and AI（2026年4月）。Harbor Valleyは慶英会が作成した架空の地域です。英検1級の公式問題形式は英検協会をご参照ください。

最初に押さえる5つの比較

• 年間電力消費量とピーク時の電力供給
• 全国の合計値と局地的な負荷集中
• 需要調整の予定と実証済みの柔軟性
• 投資発表と実際の経済効果
• 民間事業の費用と地域利用者への負担

慶英会独自長文（435語）｜AI Data Centres and Local Electricity

Paragraph 1. Artificial intelligence may appear to exist almost entirely in software, but the computers behind it require electricity, cooling, and reliable physical networks. The consequences of a new data centre depend not only on how much electricity it uses but also on where demand is concentrated and when power is needed. A national electricity total may look manageable even while several large facilities place considerable pressure on one local substation. Conversely, some computing tasks could be moved to less demanding hours, although urgent services may be harder to interrupt. Neither the size of an investment nor an impressive forecast of annual electricity consumption therefore establishes whether a particular project can be integrated responsibly.

Paragraph 2. In the fictional region of Harbor Valley, two technology firms propose data centres beside an industrial district. Officials welcome possible jobs and private investment. However, the electricity network operator warns that annual energy forecasts do not show whether sufficient power can reach the proposed sites during peak periods. Expanding a transmission connection may take time, and electricity generated elsewhere cannot always be delivered immediately. The proposed facilities may need new cooling systems whose environmental effects also depend on local design and resources. The companies must therefore distinguish the power they hope to purchase from the capacity that the network could actually deliver.

Paragraph 3. One firm proposes postponing some computing tasks whenever the network is under pressure. Supporters regard this as evidence that the project would create little risk. The operator is more cautious: a contractual promise is not the same as a tested ability to reduce demand at the required moment. Certain workloads may be flexible, but urgent communications and time-sensitive services cannot necessarily be interrupted. Engineers would need to verify the quantity and timing of any reductions, including whether they could be repeated under challenging conditions. Without such evidence, treating promised flexibility as dependable could create an illusion of security.

Paragraph 4. Residents question whether new network infrastructure could affect the cost of electricity for existing users. Officials cannot answer with a simple universal prediction. The distribution of costs depends on contracts, regulatory arrangements, and the specific upgrades required. It would be misleading to claim either that every data centre raises household bills or that private investment can never impose costs on others. The regional committee therefore recommends independent technical review, transparent explanations of key assumptions, and monitoring after the facilities open. It would examine actual employment, power reliability, verified demand flexibility, and environmental safeguards rather than celebrate announced investments alone. The committee does not conclude that data centres should be banned. It concludes that useful digital infrastructure deserves decisions grounded in credible local evidence.

独自4択5問

Reading Q1

What is the author’s central position?

• (A) All data centres should be prohibited.
• (B) New facilities should be assessed through reliable power, costs, and environmental conditions rather than promises alone.
• (C) An annual energy figure proves grid reliability.
• (D) Every computing task can be interrupted.

Reading Q2

Why are annual energy forecasts insufficient?

• (A) Annual energy cannot be measured.
• (B) The centres use electricity only in winter.
• (C) All power must be locally generated.
• (D) Deliverability at specific locations and peak periods is a separate problem.

Reading Q3

How should a claim of flexible electricity demand be treated?

• (A) As a potentially useful measure that needs testing at the required times.
• (B) As a guarantee that no infrastructure is needed.
• (C) As proof that urgent tasks can always stop.
• (D) As a reason to eliminate network operators.

Reading Q4

What does the passage imply about electricity bills?

• (A) Every project will raise bills.
• (B) All new infrastructure is free.
• (C) The impact depends on cost-sharing arrangements and local conditions.
• (D) Every project must reduce prices.

Reading Q5

Why does the committee suggest follow-up evaluation?

• (A) To ensure that the companies publish longer advertisements.
• (B) To distinguish realized outcomes from forecasts and announcements.
• (C) To prevent every digital service from operating.
• (D) To exclude local residents from decisions.

5問の正解と選択肢根拠

Reading Q1 正解（B）New facilities should be assessed through reliable power, costs, and environmental conditions rather than promises alone.。根拠：Paragraphs 1 and 4 emphasize contextual technical and economic evidence.　誤答：A and D are unsupported absolutes; C ignores timing and place.

Reading Q2 正解（D）Deliverability at specific locations and peak periods is a separate problem.。根拠：Paragraph 2 distinguishes a yearly total from peak-hour network capacity.　誤答：A/B/C are not stated by the text.

Reading Q3 正解（A）As a potentially useful measure that needs testing at the required times.。根拠：The network operator demands repeatable verification rather than an untested pledge.　誤答：B/C/D overstate or invert the claim.

Reading Q4 正解（C）The impact depends on cost-sharing arrangements and local conditions.。根拠：Paragraph 4 rejects both blanket increases and blanket no-cost claims.　誤答：The others are categorical guesses.

Reading Q5 正解（B）To distinguish realized outcomes from forecasts and announcements.。根拠：Actual employment and grid reliability must be measured after opening.　誤答：The alternatives are contrary to the committee’s aim.

リスニング独自台本（172語）

音声ファイルは付属しません。下記の台本を隠し、別の人や読み上げ機能に一度だけ読み上げてもらい、問題に回答します。英検公式音源で別の初見問題も解いてください。

At a fictional regional planning hearing, an electricity engineer is asked whether a proposed AI data centre will raise household bills. She says a universal conclusion cannot be drawn without checking how network upgrades are funded. A representative points to the company’s large annual electricity forecast. The engineer replies that yearly totals do not establish whether enough power can reach the specific location at busy hours. Another representative says the company could postpone some computing activity when electricity demand is high. The engineer welcomes this possibility, but asks for evidence that reductions can be delivered reliably at the necessary times. Some tasks can be rescheduled, while urgent services may need to continue. A resident also asks whether cooling systems could affect local resources. The engineer says this requires a site-specific review rather than an industry average. Finally, the chair asks what evidence should guide a decision. The engineer recommends evaluating dependable electricity supply, verified flexibility, transparent cost allocation, and environmental safeguards together instead of approving a project solely because of promised investment.

独自リスニング3問

Listening Q1

Why does the engineer question annual forecasts?

• (A) They contain no numbers.
• (B) They do not show deliverability at the required place and time.
• (C) Only solar power can serve data centres.
• (D) Power demand never varies.

Listening Q2

How does she respond to demand shifting?

• (A) She treats it as impossible.
• (B) She assumes every task can pause.
• (C) She rejects all evidence from companies.
• (D) She finds it promising but wants proof of reliable reductions.

Listening Q3

What does she recommend evaluating together?

• (A) Power reliability, verified flexibility, cost allocation, and safeguards.
• (B) Only the number of proposed jobs.
• (C) Only national electricity totals.
• (D) Only cooling equipment brands.

リスニングの全解答

Listening Q1 正解（B）They do not show deliverability at the required place and time.。根拠：Annual totals cannot establish peak-period local supply.　誤答：原文にない断定や因果関係に注意。

Listening Q2 正解（D）She finds it promising but wants proof of reliable reductions.。根拠：She requests verified performance.　誤答：原文にない断定や因果関係に注意。

Listening Q3 正解（A）Power reliability, verified flexibility, cost allocation, and safeguards.。根拠：Her final recommendation includes these four dimensions.　誤答：原文にない断定や因果関係に注意。

英文要約｜90〜110語

上の長文から問題の背景・制約・対応策・結論を抽出し、自分で要約したあとモデルを参照します。

A fictional region considers AI data centres that promise jobs and investment. However, annual electricity forecasts do not prove that power can reach particular locations during peak periods. One company proposes postponing computing tasks, but its ability to reduce demand reliably must be verified because some services cannot be interrupted. Residents also question who would bear network costs and whether cooling systems could affect local resources. Officials therefore recommend independent reviews and monitoring of actual employment, power reliability, and environmental safeguards. The case illustrates why useful digital infrastructure should be assessed through local evidence rather than investment announcements alone.

模範99語。 企業の発表とネットワークの実際の能力を混同しない構成です。

英作文｜大規模データセンターを慎重に審査すべきか

Original TOPIC: Should governments review major AI data-centre proposals carefully?

Governments should review major AI data-centre proposals carefully, but they should not ban every facility. Such infrastructure can offer useful services and employment while placing new demands on electricity networks. First, planning can protect power reliability. Annual generation figures cannot establish whether the local network can deliver sufficient electricity during difficult hours. Coordination with network operators can identify problems before construction begins. Second, transparent review can support fairer cost allocation. Residents deserve to know how network improvements would be financed and whether existing users might be affected. Officials should not assume that private investment eliminates every shared cost. Third, review can encourage credible flexibility. Some computing workloads can be shifted, but urgent services may need uninterrupted power. Promised reductions should therefore be tested under realistic conditions. Critics reasonably worry that extensive reviews could delay valuable development and increase business costs. Clear standards and predictable timelines can address that concern without abandoning necessary safeguards. Independent monitoring should also confirm whether commitments are fulfilled after a project opens, when adjustments may be necessary. In conclusion, I support responsible digital development grounded in reliable electricity, transparent costs, and local environmental conditions. The goal is to achieve genuine benefits rather than approve projects merely because their announcements sound impressive.

独自モデル205語。 電力の信頼性、費用負担、柔軟性を別々の理由として説明しています。

二次面接｜スピーチと独自追質問8問

Original TOPIC: Should cities carefully review proposed AI data centres?

I support careful reviews of major data-centre projects, but I would not ban them automatically. AI systems can provide useful services, and new facilities may create jobs. However, electricity networks and communities face practical limits. First, reliability matters. A large annual generation figure does not show whether enough electricity can be delivered to one place at a busy hour. Second, cost transparency is important. Residents should understand who might pay for upgrades and how existing services would be protected. Third, some companies may help by shifting computing workloads, but not every task can be postponed. Their flexibility should be tested before officials rely on it. Critics may argue that detailed reviews slow investment. I agree that unnecessary delays should be avoided, so requirements must be clear and proportionate. Still, approving an expensive facility without understanding network constraints could cause greater difficulties later. A responsible policy should also evaluate whether the expected benefits actually reach existing businesses and nearby households. Overall, I favor digital development that combines useful innovation with dependable power, fair costs, and responsible environmental safeguards.

スピーチ例177語。 2分で発話できるか自分の速度で確認してください。

Interview Q1

Question: Should data centres be banned?

Model answer: No. Projects should be evaluated on reliability, costs, actual benefits and local environmental effects.

Interview Q2

Question: Why are national electricity averages insufficient?

Model answer: They may conceal a concentrated local burden on substations and connections.

Interview Q3

Question: Can all computing tasks be postponed?

Model answer: No. Urgent services can be less flexible than processing jobs that tolerate delays.

Interview Q4

Question: Will household prices necessarily increase?

Model answer: That cannot be assumed; effects depend on network financing, regulation and local arrangements.

Interview Q5

Question: What should companies demonstrate?

Model answer: They should provide credible electricity plans and test any proposed demand reductions.

Interview Q6

Question: Do promised jobs justify automatic approval?

Model answer: Employment matters but should be weighed against verified infrastructure constraints.

Interview Q7

Question: How should cooling be evaluated?

Model answer: Through a site-specific assessment of local conditions rather than a single global average.

Interview Q8

Question: What evidence would change your position?

Model answer: If reliable delivery and appropriate safeguards could not be achieved, I would support redesign or rejection.

必須語彙20表現

英語	日本語
data centre	データセンター
peak demand	最大需要
local grid	地域電力網
substation	変電所
electricity reliability	電力の信頼性
transmission connection	送電接続
cost allocation	費用配分
demand shifting	需要の時間移動
load flexibility	負荷柔軟性
computing workload	計算処理負荷
power delivery	電力供給
network upgrade	系統増強
cooling system	冷却設備
site-specific assessment	地点別評価
verified reduction	検証済み削減
independent review	独立審査
forecast uncertainty	予測の不確実性
environmental safeguard	環境保護措置
local infrastructure	地域インフラ
realized outcome	実現した成果

英検1級の解答で避ける誤った断定

• Data-centre investment does not automatically improve every local electricity service.
• An annual forecast cannot guarantee power delivery at every hour.
• Some computing tasks are flexible, but urgent services may not be.
• Cost impacts depend on local contracts and regulation.
• High investment figures are not the same as realized public benefits.
• A proposed demand reduction should be tested before being treated as dependable.
• Local water and cooling conditions require site-specific assessment.
• A balanced decision can acknowledge both digital benefits and shared infrastructure risks.

7日間の復習

• 1日目：独自長文5問を初見で解き、選択肢の過剰な断定を整理。
• 2日目：20の重要語彙を例文に使う。
• 3日目：台本を隠して聴解3問。
• 4日目：90〜110語の英文要約を自作。
• 5日目：200〜240語の意見論述。
• 6日目：1分準備→2分スピーチ→追質問8問。
• 7日目：英検の未使用公式問題で初見演習を実施。

FAQ

AIデータセンターを建てると電気料金は必ず上がりますか？

必ずではありません。費用負担の配分は契約や系統整備、制度により異なります。

蓄電池などがあれば供給問題は解決しますか？

単一の技術で全てを解決すると断定できません。時間帯、ネットワーク、需要の柔軟性を含めて評価します。

この地域の事例はIEAの実在する調査ですか？

いいえ。公表資料の論点を用い、慶英会が作成した架空の教育用例です。

公式情報・関連教材

• IEA 2026｜Powering Artificial Intelligence
• 英検協会｜英検1級の試験内容
• 英検1級・電力網と再生可能エネルギーの4技能教材
• 英検1級・重要鉱物と電池循環
• 慶英会の英検1級教材一覧

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