I’ve seen a stat go around many, many times that a single 100 word answer generated by Chat GPT uses a whole bottle of water in order to cool the GPUs used to create the response. If all Chat GPT did was spit out 100 word answers and you could only ask it one question per day, maybe that wouldn’t be so bad. But people are using it all the time—and as far as I can tell, more and more people are using it every day, including people who know it’s bad for environment and believe it’s against their values. I’d be willing to bet many of these people also know the stat about the bottle of water and yet it clearly hasn’t had its intended effect. It’s fascinating, and I don’t entirely blame them. As a person who primarily commutes by car, it’s not as though I’m so much better (even though I drive a used Prius lol). It feels to me that there’s something broken in the way so much environmental messaging is done. I don’t have an immediate fix or anything, and I recognize the almost impossible odds that the earth is up against, such as our economic system and personal convenience to start. But these kinds of facts don’t seem to cut it. The idea of a single water bottle is hard to fully grasp when people fill up their tanks once a week and a seemingly endless amount of stuff gets produced on a near daily basis. So perhaps there’s a less rational way to get people to care about this stuff more.
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Here's what ChatGPT told me:
what is the estimated annual cost of an average person using ChatGPT each day in lieu of a search engine?
ChatGPT said:
Great question—let’s estimate the annual energy and dollar cost of a person using ChatGPT daily instead of a traditional search engine like Google.
⚙️ Assumptions
Factor Value
Daily usage 10 questions/day
Days/year 365
Energy per ChatGPT query ~0.005–0.01 kWh
Energy per Google search ~0.0003 kWh
Electricity cost $0.15/kWh (U.S. average)
🔋 Annual Energy Use
ChatGPT
10 queries/day × 365 days × 0.0075 kWh (average)=27.375 kWh/year
10 queries/day×365 days×0.0075 kWh (average)=27.375 kWh/year
Google (for comparison)
10×365×0.0003=1.095 kWh/year
✅ ChatGPT uses ~25× more energy per query than Google, due to the complexity of running large AI models.
💵 Annual Dollar Cost
ChatGPT 27.375 ×$0.15=$4.11/𝑦𝑒𝑎𝑟
27.375×$0.15=$4.11/year
Google
1.095×$0.15=$0.16/𝑦𝑒𝑎𝑟
1.095×$0.15=$0.16/year
✅ Summary
Metric ChatGPT Google
Annual energy ~27.4 kWh ~1.1 kWh
Annual cost ~$4.11 ~$0.16
So if one average person used ChatGPT for 10 queries a day instead of Google, it would cost about $4/year in energy—small in personal terms, but meaningful when scaled across millions of users.
Let me know if you want the carbon footprint comparison too!