Amazon and Google AI push drives 16% emissions jump in 2025

Big Tech's artificial intelligence ambitions are colliding with climate goals as Amazon's carbon footprint rose 16% in 2025 and Google's cloud backlog swells to $462 billion, revealing the environmental cost of the data center buildout.

Amazon's carbon emissions jumped 16% in 2025 as the company's data center buildout for artificial intelligence drove electricity consumption higher, the company disclosed in its latest sustainability report.

"The data center requirements of AI have raised questions about the potential for Amazon and other big tech companies to reduce their carbon footprint," Kara Hurst, chief sustainability officer at Amazon, said in the report, acknowledging that AI is "creating new demands for energy, water, and infrastructure."

Amazon's indirect emissions from purchased electricity rose 34% in 2025, driven by data center power use, fleet electrification and building upgrades. The company's total emissions have climbed 58% since it announced the Climate Pledge in 2019, even as carbon intensity — emissions per dollar of revenue — fell 38% over the same period.

The tension between AI growth and sustainability targets is not limited to Amazon. Alphabet's Google Cloud revenue surged 63% to more than $20 billion in the latest quarter, with a $462 billion backlog of signed customer commitments. The company plans $180 billion to $190 billion in capital expenditures for 2026 alone, with further increases expected in 2027, as it races to build capacity for demand that management acknowledged currently exceeds supply.

A $462 Billion Backlog Meets a Carbon Ceiling

Alphabet's cloud backlog nearly doubled in a single quarter to $462 billion — a figure exceeding the company's total revenue from the past year. Management described the company as "compute constrained in the near term," noting that cloud revenue would have been higher had it been able to meet demand. The spending spree, while necessary to capture the opportunity, carries an environmental price tag that investors are only beginning to quantify.

Amazon's energy consumption in 2025 exceeded that of New Zealand, according to the company's disclosures. The hyperscaler's electricity purchases rose by more than a third year over year, with data centers representing the largest share of the increase. Microsoft, which has also committed to aggressive AI infrastructure spending, faces similar scrutiny as its own emissions trajectory diverges from its sustainability pledges.

Internal Pushback and the Intensity Debate

Members of Amazon Employees for Climate Justice criticized the company's framing of AI as a sustainability opportunity rather than a liability. "Our members have lost trust in Amazon's ability to voluntarily do the right thing," Eliza Pan, a spokesperson for the group, said. Sarah Tracy, another member, called for "a real conversation about what we can do differently to build out AI more responsibly."

Amazon has defended its trajectory by pointing to carbon intensity, which measures emissions relative to economic output. "If energy goes up because the business grew, but carbon intensity trends down, that shows that we're on the right trajectory," Brandon Oyer, who develops energy portfolios for Amazon Web Services, said. Environmentalists counter that total atmospheric emissions — not efficiency ratios — determine climate outcomes.

For investors, the calculus is shifting. Alphabet trades at roughly 22 times forward earnings, a discount to its hyperscaler peers, reflecting the market's uncertainty about whether the massive capital spending will translate into proportional revenue growth. Amazon's data center buildout, meanwhile, is expected to consume an increasing share of the company's operating cash flow. The question is whether the market will begin pricing environmental compliance costs — from carbon taxes to regulatory restrictions on new data center construction — into the valuations of the largest cloud providers.

This article is for informational purposes only and does not constitute investment advice.