Microsoft Reports 25 Percent Rise in Greenhouse Gas Emissions for Fiscal 2025

Microsoft released its sustainability report on Thursday covering fiscal year 2025, which ended in June 2025. The report showed the company's greenhouse gas emissions rose by roughly 25 percent to 20 million metric tons of CO2 equivalent. Wired reported that the increase was driven primarily by the expansion of datacenter infrastructure.

Scope 2 emissions from purchased energy accounted for 13 percent of the total. Microsoft matched 100 percent of its electricity consumption with carbon-free sources but stopped purchasing unbundled renewable energy certificates, a change that contributed to the Scope 2 rise.

” The company announced a partnership with Chevron last month to build a power plant supplying a future data center in West Texas.

Permits indicate that plant could emit more than 11.8 million tons per year and signed a nonbinding letter of intent for compute at a West Virginia data center powered by off-grid gas that could emit more than 11 million tons annually. Amazon disclosed a 16 percent increase in its CO2 emissions in its recent sustainability report.

Google reported an 18 percent year-over-year increase in annual greenhouse gas emissions, its largest single-year rise. ” Smith and Nakagawa wrote that the global race for AI is “increasing demand for ... ” Microsoft still plans to become carbon negative by 2030.