Observed Signal · May 7, 2025 · Research · Source: Trending Topics · Impact: 2/5 · Sentiment: Positive
ChatGPT's Per-User CO2 Footprint Is Minimal, Analysis Finds
British data scientist Hannah Ritchie published an analysis suggesting that individual ChatGPT users have a relatively small carbon footprint compared to everyday activities. Each text-based ChatGPT query consumes roughly 3 watt-hours of energy and emits about 2-3 grams of CO2, according to her figures. Even 100 daily queries would represent only about 2% of an average UK resident's daily electricity use. Ritchie notes that more recent estimates suggest energy consumption has dropped to just 0.3 watt-hours per query, ten times lower than earlier calculations. She argues that regular users of text-based LLMs should not feel guilty about their AI usage, as the impact is negligible compared to other household energy consumption. However, power users generating large amounts of video and audio content consume more energy. Ritchie's analysis is based on calculations by Andy Masley, director of the Effective Altruism DC think tank.
Provides a data-driven perspective on AI's energy and carbon footprint, relevant to AI adoption and sustainability discussions affecting technology infrastructure used across industries.
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Key Takeaways & Evidence Grounding
- Each text-based ChatGPT query uses approximately 3 watt-hours of energy according to Hannah Ritchie's analysis.
- A single ChatGPT query emits about 2-3 grams of CO2.
- 100 ChatGPT queries per day would represent only about 2% of an average UK resident's daily electricity consumption.
- More recent analyses suggest ChatGPT queries consume only 0.3 watt-hours, ten times less than earlier estimates.
- Hannah Ritchie concludes regular users of text-based LLMs should not be concerned about their individual CO2 footprint.
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