Question of the Day
One question per day to look beyond the headlines.
Why did Microsoft’s emissions rise 25% even as it signed more renewable power contracts?
Take-away Renewable deals didn’t offset the 25% rise because emissions accounting changed: shifting from RECs to long‑term PPAs (and stopping credits) reclassifies electricity as higher‑carbon.
Microsoft's emissions rose by 25% primarily due to a significant expansion in data center operations driven by AI demand [2], [3]. This increase in infrastructure meant higher energy consumption, some of which relies on fossil fuels, such as natural gas, due to the establishment of new facilities like the Monarch Compute Campus in West Virginia [1]. Despite signing more renewable power contracts, Microsoft altered its emissions accounting methodology by moving from renewable-energy certificates to long-term renewable power contracts, which also contributed to the reported rise in emissions [1]. Additionally, the halt in the purchase of renewable energy credits further impacted their reported emissions, exacerbating the increase [3].