The Artificial Intelligence boom is inadvertently fueling a significant surge in Big Tech’s acquisition of carbon credits, as these tech giants scramble to offset the substantial emissions generated by their rapidly expanding, energy-intensive AI infrastructure.
Major players including Amazon, Google (Alphabet), Microsoft, and Meta have dramatically increased their purchases of permanent carbon removal credits since the widespread adoption of generative AI, catalyzed by the launch of ChatGPT in late 2022. This trend is underscored by data compiled for CNBC by the carbon credit management platform Ceezer.
These companies have all publicly pledged to achieve net-zero emissions. However, the relentless development and deployment of AI, a technology notoriously demanding in terms of both energy and water consumption, are casting a shadow of doubt over the feasibility of these ambitious climate goals. Carbon credits offer these corporations a mechanism to neutralize their environmental footprint by financing projects that actively reduce or sequester carbon dioxide from the atmosphere. Each credit, in theory, represents one metric ton of CO2 removed or avoided.
The financial commitment from these tech titans is staggering. Amazon, Alphabet, Microsoft, and Meta are collectively projected to invest close to $700 billion this year to accelerate their AI initiatives. A substantial portion of this investment is earmarked for the construction of massive data centers, the very infrastructure that drives increased emissions.
Data from Ceezer, which also incorporated insights from Allied Offset and Cdr.fyi, reveals a dramatic escalation in carbon credit purchases. From a relatively modest 14,200 credits for permanent carbon removal in 2022, the figure surged to 11.92 million in 2023. This upward trajectory continued with a 104% year-on-year increase in 2024, reaching 24.4 million credits, and a further 181% jump in 2025, totaling 68.4 million credits, according to Ceezer’s analysis.
It’s important to note that Ceezer’s data primarily focuses on carbon removals considered permanent. Microsoft’s purchasing strategy, for instance, encompasses a broader spectrum of carbon credits, including those with time-limited durability classified as high, medium, and low. The latter category involves methods like soil sequestration or forestry initiatives, which store carbon for less than a century.
While Amazon declined to comment on its specific carbon credit procurement strategies, Meta and Google did not respond to requests for comment.
### A Modest Beginning
Among the four tech giants, Microsoft stands out for consistently reporting its carbon credit purchases for periods predating 2022. However, the nature of carbon credit transactions, often involving multi-year delivery schedules, can introduce complexities and potential skewing of reported figures.
Furthermore, there is no mandatory regulatory requirement for companies to publicly disclose these purchases. Concerns over potential reputational damage, particularly in the early days when the efficacy and legitimacy of some carbon credits were questioned due to a lack of verifiable emission reductions, may have led some companies to refrain from reporting. Magnus Drewelies, CEO of Ceezer, highlighted this historical controversy, explaining that some early credits did not represent genuine environmental benefits.
Drewelies emphasized that given the current constraints on clean energy supply necessary to power the AI build-out, achieving net-zero targets for Big Tech is becoming “impossible” without the crucial role of carbon removal technologies. These technologies encompass a range of innovative approaches, from direct air capture (DAC) systems that mechanically extract CO2 from the atmosphere to processes that accelerate nature’s carbon sequestration capabilities.
Ben Rubin, executive director of the Carbon Business Council, interpreted the significant uptick in purchases as a direct response to the UN’s 2022 Intergovernmental Panel on Climate Change (IPCC) report. This landmark report underscored the necessity of carbon removal for all viable pathways to limit global warming to below 1.5 degrees Celsius.
“The demand surge for removal in 2023 was not a short-term reaction but the beginning of a structural shift, matched by increasing private sector action and public policy support,” Rubin told CNBC. He further elaborated that these purchases signify a transition from small, experimental acquisitions to long-term offtake agreements. “These buyers are looking to secure future supply, send demand signals to the market, and address residual emissions in their long-term climate strategies,” he added.
### Building AI Sustainably
Within the Big Tech landscape, Microsoft has long been recognized as a frontrunner in climate initiatives. Shilpika Gautam, CEO of the climate finance platform Opna, remarked that the current carbon removal market is “basically Microsoft,” underscoring the company’s significant influence.
When pressed for details on its carbon credit acquisitions, Microsoft provided data that differed from Ceezer’s compilation, as it included all types of carbon credits, not exclusively permanent removals. Microsoft reported a 247% increase in credit purchases between its fiscal year 2022 and 2023, reaching 5 million units. This was followed by a 337% surge from fiscal year 2023 to 2024, totaling 21.9 million credits. For the subsequent fiscal year, the company indicated an approximate 100% rise, though specific figures were not disclosed.
Melanie Nakagawa, chief sustainability officer at Microsoft, articulated the company’s dual strategy of prioritizing emissions reduction while actively pursuing carbon removal for unavoidable emissions, with the ultimate goal of achieving carbon negativity by 2030. “As a first mover in the carbon removal market, we are in a unique position to send demand signals that can lead to an increase in supply. A carbon removal market with more solutions and more buyers will get us all closer to meeting our collective targets, and drive positive planetary and economic impact,” she stated in a company release. Microsoft did not directly link its carbon credit purchases to its AI strategy.
Renewable energy sources are expected to play a pivotal role in satisfying the escalating demand for AI data centers. “Over the time that AI rose, emissions did slightly go up when looking at the bigger companies, but not so noticeably. This implies that hyperscalers were able to react relatively quickly, including shifting to renewable energy,” observed Ceezer’s Drewelies, drawing on his platform’s data. This suggests that these companies are not solely reliant on carbon credits to meet their climate objectives.
Opna’s Gautam posited that Microsoft’s substantial carbon credit purchases can largely “be attributed to their AI data centers build up.” She further noted that Microsoft’s strategic investments in companies developing low-carbon materials, such as Sublime Systems and Stegra, are particularly insightful. Once these technologies achieve scale, they are poised to facilitate the construction of truly sustainable infrastructure.
However, Gautam also expressed a nuanced perspective, suggesting that Big Tech’s “buying spree” of carbon credits to offset emissions could be perceived as conflicting with their stated “conviction and their desire to build better.” Last year, Amazon launched a platform enabling its partners to procure carbon credits, alongside its ongoing investments in reducing the environmental impact of its materials, water, and energy consumption, and its commitment to renewable energy.
Gautam added that a hopeful scenario would be one where the carbon removal industry becomes obsolete within a decade, signifying a global paradigm shift towards inherently sustainable construction and operational practices.
Drewelies further clarified that the overarching net-zero commitments predated the recent surge in AI development. He suggested that carbon credit purchases would have “probably” seen an increase even without the AI boom. “There is a fair chance that AI very practically underpinned the need for carbon dioxide removal as a quick and flexible instrument to deal with emission increases,” he concluded.
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