Citigroup Aims to Help Bankroll $3 Trillion AI Infrastructure Buildout

Citigroup has assembled a team focused on helping the bank win more business advising and lending to investors and companies involved in the build-out of data centers, computing and other artificial intelligence infrastructure, Bloomberg reported Wednesday (Feb. 25).

The bank estimates that this build-out will require $3 trillion of capital by 2030, according to the report.

While Citigroup’s AI Infrastructure Banking team is made up of leaders from its investment banking and corporate banking teams, who will keep their existing titles, the team will work with other teams across the organization to supply capital for AI infrastructure projects, per the report.

It was reported in September 2025 that Citigroup expected AI infrastructure spending by Big Tech to surpass $2.8 trillion through 2029, a figure that was up from the bank’s earlier projection of $2.3 billion. Citigroup pointed to early investments by hyperscalers and rising demand for enterprise AI use.

Big Tech companies no longer rely solely on profits to fund AI infrastructure. The costs are steep, so companies are borrowing to stay on top of demand.

Amazon announced Monday (Feb. 23) that it will invest $12 billion in data center campuses in Louisiana that will support its AI and cloud computing technologies. The company also said in January that it plans to invest at least $11 billion in Georgia to expand this sort of infrastructure, and it said in June 2025 that it was investing at least $20 billion in Pennsylvania to expand its data center infrastructure.

It was reported Friday (Feb. 20) that OpenAI told investors that its compute costs could approach $600 billionby the decade’s end. The company had earlier said that it had made $1.4 trillion in infrastructure commitments. It offered up a lower figure and a more defined timeline for its planned expenditures amid concerns that its expansion plans outweighed its potential revenue, according to the report.

Alphabet said Feb. 4 that it plans to invest between $175 billion and $185 billion in capital expenditures during 2026 in response to sustained demand for AI compute across consumer products, enterprise platforms and cloud infrastructure.

Meta said in January that it expects capital expenditures in 2026 to land between $115 billion and $135 billion, nearly double the $72 billion it spent last year, and that a big chunk of that money will go toward new data centers and other computing infrastructure that powers AI.

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