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Data Centers

Short answer: Data centers are the buildings where the internet physically lives: racks of servers, storage and network gear, plus the power and cooling plant that keeps them running around the clock. In 2024 they used about 415 TWh of electricity, roughly 1.5% of the world's total, according to the IEA.

In the U.S. they used 4.4% in 2023, and that share could reach 6.7–12% by 2028, according to Lawrence Berkeley National Laboratory. AI is the main driver of the growth, and the hottest AI chips now draw more than 1,000 W each, which is pushing operators toward liquid cooling.

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What should you know about Data Centers?

Quick facts. Each one stands alone and has a stable ID you can cite.

  1. Data centers used about 415 TWh of electricity in 2024, roughly 1.5% of the world's total, and the IEA expects that to more than double by 2030.

    DD-029-F01 · Write-up · Exhibit B (1.5% of the world's electricity)

  2. Top AI chips now draw more than 1,000 watts each, which is why new data centers are switching to liquid cooling.

    DD-029-F02 · Write-up · Exhibit F (Why liquid cooling)

Video transcript: Data Centers: The Internet Lives in Warehouses Full of Humming Servers

DID YOU KNOW? Modern data centers are large facilities that house thousands of servers, responsible for storing, processing, and transmitting the digital information that powers cloud computing, streaming, artificial intelligence, banking, and much of the internet. Inside, rows of server stacks operate continuously, connected by high-speed networking equipment and supported by extensive cooling and power infrastructure, to prevent overheating and downtime. Data centers often include redundant power supplies, backup generators, battery systems, and multiple internet connections so services remain online even during failures or disasters. As computing demand grows, especially from AI, newer data centers are becoming larger and more energy intensive, driving innovations in liquid cooling, renewable power integration, and high-efficiency chip design. NOW YOU KNOW!

Burned-in captions, read frame by frame (see transcript.md) · 42.6s Reel ·

Video coming soonData Centers · Instagram Reel
Data Centers: The Internet Lives in Warehouses Full of Humming Servers Instagram Reel · · 42.6s

The write-up

The internet lives in warehouses full of humming servers. Data centers used about 1.5% of the world's electricity in 2024.

  1. Exhibit A

    What's inside

    A data center houses three kinds of IT equipment: servers, storage and networking gear. It also has the cooling and electrical infrastructure that keeps them running. Berkeley Lab's national estimate models all of these together.

  2. Exhibit B

    1.5% of the world's electricity

    The IEA estimates data centers used about 415 TWh in 2024, around 1.5% of global electricity. The U.S. accounted for 45% of that, China 25% and Europe 15%.

  3. Exhibit C

    The U.S. picture

    U.S. data centers used 58 TWh in 2014 and 176 TWh in 2023, which is 4.4% of national electricity. Berkeley Lab projects 325–580 TWh by 2028, or 6.7–12% of U.S. electricity.

  4. Exhibit D

    AI is the accelerator

    The IEA expects global data-center demand to more than double to about 945 TWh by 2030, slightly more than Japan uses today, with AI as the biggest driver.

  5. Exhibit E

    Built never to go dark

    The Uptime Institute rates facilities in four tiers. Tier II adds redundant (N+1) generators, UPS batteries and cooling. Tier III can be maintained without shutting down. Tier IV keeps two fully independent systems so that any single failure is tolerated.

  6. Exhibit F

    Why liquid cooling

    Leading AI chips now draw more than 1,000 W each, too much for air alone. The IEA's efficiency program says liquid cooling is a prerequisite for high-density AI racks and can cut cooling energy by roughly 30–40%.

  7. Exhibit G

    Power and water trade-offs

    Renewables and natural gas are both growing to meet data-center demand. Cooling also involves trade-offs: evaporative towers use less electricity but consume water, while dry coolers save water but use more power.

Questions people ask about Data Centers

Roughly what share of the world's electricity did data centers use in 2024?

The IEA estimates about 415 TWh, roughly 1.5% of global electricity.

Source: Write-up · Exhibit B (1.5% of the world's electricity) · Energy and AI (IEA, 2025, full report PDF); Energy and AI: Executive summary (IEA)

Which country used the most data-center electricity in 2024?

The U.S. accounted for about 45%, ahead of China (25%) and Europe (15%).

Source: Write-up · Exhibit B (1.5% of the world's electricity) · Energy and AI (IEA, 2025, full report PDF); Energy and AI: Executive summary (IEA)

What share of U.S. electricity did data centers use in 2023?

Berkeley Lab puts it at 176 TWh, or 4.4% of U.S. electricity.

Source: Write-up · Exhibit C (The U.S. picture) · 2024 United States Data Center Energy Usage Report (Lawrence Berkeley National Laboratory); DOE Releases New Report Evaluating Increase in Electricity Demand from Data Centers (U.S. DOE)

What does an Uptime Institute Tier IV rating mean?

Tier IV is fault-tolerant, with two simultaneously active, physically isolated systems.

Source: Write-up · Exhibit E (Built never to go dark) · Tier Classification System (Uptime Institute); Tier Classifications Define Site Infrastructure Performance (Uptime Institute white paper)

Why are AI data centers turning to liquid cooling?

Heat densities from 1,000-W-plus GPUs exceed what air cooling can handle efficiently.

Source: Write-up · Exhibit F (Why liquid cooling) · Liquid Cooling in Data Centres, final report (IEA 4E EDNA, 2026)

Test Your Knowledge

All quizzes →

5 questions, all from this case file. Answers are revealed instantly.

  1. Roughly what share of the world's electricity did data centers use in 2024?

    1. 0.1%
    2. 1.5%
    3. 10%
    4. 25%
    Show the answer

    Answer: B. 1.5% The IEA estimates about 415 TWh, roughly 1.5% of global electricity. Source: Write-up · Exhibit B (1.5% of the world's electricity) · Energy and AI (IEA, 2025, full report PDF); Energy and AI: Executive summary (IEA)

  2. Which country used the most data-center electricity in 2024?

    1. China
    2. India
    3. United States
    4. Germany
    Show the answer

    Answer: C. United States The U.S. accounted for about 45%, ahead of China (25%) and Europe (15%). Source: Write-up · Exhibit B (1.5% of the world's electricity) · Energy and AI (IEA, 2025, full report PDF); Energy and AI: Executive summary (IEA)

  3. What share of U.S. electricity did data centers use in 2023?

    1. About 0.5%
    2. About 4.4%
    3. About 15%
    4. About 30%
    Show the answer

    Answer: B. About 4.4% Berkeley Lab puts it at 176 TWh, or 4.4% of U.S. electricity. Source: Write-up · Exhibit C (The U.S. picture) · 2024 United States Data Center Energy Usage Report (Lawrence Berkeley National Laboratory); DOE Releases New Report Evaluating Increase in Electricity Demand from Data Centers (U.S. DOE)

  4. What does an Uptime Institute Tier IV rating mean?

    1. The facility runs only on solar
    2. It tolerates any single failure with two independent systems
    3. It has four floors
    4. It cools with seawater
    Show the answer

    Answer: B. It tolerates any single failure with two independent systems Tier IV is fault-tolerant, with two simultaneously active, physically isolated systems. Source: Write-up · Exhibit E (Built never to go dark) · Tier Classification System (Uptime Institute); Tier Classifications Define Site Infrastructure Performance (Uptime Institute white paper)

  5. Why are AI data centers turning to liquid cooling?

    1. It's cheaper to install
    2. Top AI chips draw over 1,000 W each
    3. Water makes servers faster
    4. Air conditioning is banned
    Show the answer

    Answer: B. Top AI chips draw over 1,000 W each Heat densities from 1,000-W-plus GPUs exceed what air cooling can handle efficiently. Source: Write-up · Exhibit F (Why liquid cooling) · Liquid Cooling in Data Centres, final report (IEA 4E EDNA, 2026)

Cite this case file

Easterling, Marcus. "Data Centers." The Detail Department (DetailEnjoyer), case file DD-029, last updated May 16, 2026. https://detailenjoyer.com/case/data-centers/

Permalink: https://detailenjoyer.com/case/data-centers/ · Last updated

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