AI data center emissions are 30% higher than reported due to undercounted supply chain and water usage, with Google, Microsoft, Amazon as top emitters. A new study published May 2026 finds AI data center emissions are 30% higher than previously reported. Google, Microsoft, and Amazon are the largest contributors, the report notes. Key facts Emissions 30% higher than reported. Study published in Nature Climate Change. Google, Microsoft, Amazon top emitters. Water usage 40% higher than disclosed. AI data centers account for 0.5% of global emissions. The study, conducted by researchers at the University of California and published in Nature Climate Change , analyzed emissions from 2023 to 2025 across major hyperscalers. It found that official figures undercounted supply chain emissions and water usage by an average of 30% [According to the study]. The unique take: This isn't just a reporting error — it's a structural blind spot.…