Nvidia is in talks to provide a $250 billion backstop for a planned OpenAI data center in southern Ohio.

The SoftBank facility could cost more than $500bn, consume 10GW, and be the largest ever data center. Its first phase is expected in 2028, at around 800MW.

The Wall Street Journal reports that Nvidia’s backing would allow SoftBank to raise debt at more favorable terms, making the facility more viable.

Nvidia CEO Jensen Huang – Sebastian Moss

The project was first announced this March on Department of Energy land, currently home to a decommissioned uranium-enrichment site. SoftBank subsidiary SB Energy is set to build 10GW of new power generation, including 9.2GW of natural gas generation, to power the facility. OpenAI is also an SB Energy investor.