Lesson 1: How Much Energy and Water Does One AI Prompt Use? No sign-up needed.
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Learn how much electricity and water AI really uses. See what one prompt costs compared with everyday things, where a data center's energy and water go, how training compares with daily use, why communities debate new data centers, how to use AI with less waste, and what comes next. No code. Free certificate.
Headlines about AI's water and energy use often disagree. One says a chatbot drinks a bottle of water for a handful of answers. Another says a prompt uses only a few drops. This short course explains the real numbers in plain language, with no code. You will start with the best published figures for one text prompt, from Google, OpenAI, Mistral and independent researchers, and compare them with things you know, like a light bulb, a phone charge and a kettle. You will learn why water estimates range so widely, and why images, video and reasoning answers cost much more than a short reply. Next, you will follow the energy and water through a data center, from the power plant to your answer, and see why carbon depends on the grid. You will compare the one-time cost of training a model with the ongoing cost of using it. Then you will look at the public debate over data centers: grid limits, water, bills, jobs and local pauses, with the main arguments on each side. Finally, you will learn simple habits to use AI with less waste and how to judge new claims. Six short lessons, quizzes and a free certificate.
2 modules • 6 lessons
Finish every lesson and pass the final exam to earn this free, shareable certificate.
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Michail Ouroumis
Founder, FreeAcademy.ai
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Published figures range from well under 1 mL to tens of mL per answer. Google reported about 0.26 mL for a median Gemini text prompt, counting cooling water. Studies that also count the water used to make electricity and hardware give much higher numbers.
OpenAI has said an average query uses about 0.34 Wh, and independent researchers estimate about 0.3 Wh for a typical query. Long inputs, reasoning answers, images and video use much more.
It depends on the task and scale. A few short text prompts use little energy for one person, but billions of prompts, heavy tasks like video, and new data centers add up. The course explains both sides with sources so you can judge for yourself.
No. The course uses plain language and everyday comparisons. There is no code and only simple arithmetic.
About 35 minutes across six short lessons. Each lesson has a quiz, and there is a final exam with a free certificate when you pass.
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