Microsoft’s greenhouse fuel air pollution elevated by roughly 25 p.c final yr, the corporate says in its new sustainability report launched Thursday.
The report follows comparable ones launched by Google and Amazon final week. Collectively, they present a troubling pattern of rising tech firm emissions, pushed by the worldwide race to construct out power-hungry information facilities.
In a weblog put up asserting the report, Microsoft vice chair and president Brad Smith and chief sustainability officer Melanie Nakagawa say that the emissions enhance is pushed “primarily by the enlargement of our datacenter infrastructure.”
A good portion of that enhance, they write, was tied to emissions from power the corporate bought or acquired to run its operations. Generally known as Scope 2 emissions, that greenhouse fuel air pollution accounted for 13 p.c of Microsoft’s whole.
Knowledge facilities, which use massive quantities of power working synthetic intelligence chips, have pushed many massive tech firms’ net-zero targets more and more out of attain over the previous few years.
Amazon disclosed a 16 p.c enhance in its CO2 emissions in its current sustainability report. Google mentioned in its new sustainability report that annual greenhouse fuel emissions rose 18 p.c final yr in comparison with 2024, the greatest single-year enhance it’s recorded. The corporate has aggressively invested in renewable power, nevertheless it’s additionally begun including fossil gasoline energy for a few of its information facilities.
Microsoft highlighted in its sustainability report that it had matched 100% of its electrical energy consumption with carbon-free sources. However the information heart build-out is about to speed up—and a few of Microsoft’s current investments may drive its emissions larger. Notably, the brand new report covers the 2025 fiscal yr, which ended final June, and has made a variety of offers since then involving gas-powered information facilities.
Final month, the corporate formally introduced a partnership with Chevron, which is constructing an influence plant to provide a future information heart for the corporate in West Texas. Permits present that that energy plant may emit greater than 11.5 million tons of CO2 equal yearly, an quantity larger than the whole state of Rhode Island. The corporate has additionally leased buildings on the Stargate campus in Abilene, Texas, which will likely be powered by an onsite energy plant that would emit greater than 7.8 million tons of CO2 equal every year. Microsoft has additionally signed a nonbinding letter of intent for compute at a West Virginia information heart, which might be powered by off-grid fuel that would emit greater than 11 million tons of greenhouse gases.
“Microsoft’s technique consists of exploring quite a lot of choices for mitigating the emissions from its electrical energy consumption, according to our sustainability ambitions,” Nakagawa says in a press release to WIRED.
Microsoft’s method to offsetting a few of its emissions by way of credit and different investments can be altering. The corporate says it stopped buying unbundled renewable power certificates, a transfer that contributed partially to the rise in Scope 2 emissions. Utilizing a majority of these certificates have been criticized in recent times as greenwashing as a result of they don’t essentially add extra clear energy to the grid. Unbundled RECs are basically a “paper transaction that’s bodily disconnected from real-world penalties,” says Danny Cullenward, a researcher on the College of Pennsylvania. (Cullenward can be a visiting college member at Google however notes he was not talking on behalf of the corporate.)
“I believe it is extremely commendable that [Microsoft] is transferring away from unbundled RECs and prioritizing investments in new clear electrical energy, the place energy buy agreements and different long-term offtake agreements can and do trigger new clear electrical energy to come back on-line,” he provides.
Regardless of the rise in emissions and its continued investments in AI, Microsoft nonetheless says that it plans to turn out to be “carbon unfavourable” by 2030. Smith and Nakagawa write that the worldwide race for AI is “growing demand for … power, water, land, and supplies.” They are saying that the corporate “has a accountability to assist make sure that expertise strengthens, reasonably than strains, the programs and communities on which it relies upon.”
