Microsoft's Emissions Surge 25% as Data Centers Expand
Original: Microsoft Reports a Massive 25 Percent Jump in Emissions
Why This Matters
Big Tech's AI data center buildout is reversing net-zero progress industry-wide, raising scrutiny on climate commitments.
Microsoft reported a 25% rise in greenhouse gas emissions in fiscal year 2025, driven by data center expansion. Scope 2 emissions accounted for 13% of its total. The report follows Amazon's 16% and Google's 18% emissions increases, signaling a sector-wide trend tied to AI infrastructure growth.
Microsoft released its 2025 sustainability report on July 10, revealing a roughly 25% increase in greenhouse gas emissions compared to the prior year. Vice Chair Brad Smith and Chief Sustainability Officer Melanie Nakagawa attributed the rise 'primarily by the expansion of our datacenter infrastructure,' with Scope 2 emissions—from purchased energy—making up 13% of the company's total pollution.
The report follows disclosures from Amazon (16% increase) and Google (18% increase, its largest single-year jump on record), reflecting a sector-wide pattern driven by AI chip workloads in power-hungry data centers.
Microsoft noted it matched 100% of electricity consumption with carbon-free sources in fiscal 2025. However, the company has since made several deals involving fossil fuel-powered infrastructure not covered by this report. These include a partnership with Chevron to build a gas-powered plant in West Texas (potentially emitting over 11.5 million tons of CO₂ equivalent annually), leased space on the Stargate campus in Abilene, Texas (up to 7.8 million tons CO₂e/year), and a nonbinding agreement for a West Virginia data center powered by off-grid gas (over 11 million tons CO₂e/year).
Microsoft also disclosed it stopped purchasing unbundled renewable energy certificates—instruments criticized as greenwashing—which contributed to the Scope 2 emissions increase. Nakagawa stated the company is 'exploring a variety of options for mitigating the emissions from its electricity consumption.'