# OpenAI to lease gigantic Cold War-era facility in what is set to be largest-ever AI data center > Source: > Published: 2026-08-18 00:38:00+00:00 ## OpenAI to lease gigantic Cold War-era facility in what is set to be largest-ever AI data center San Francisco, California - **ChatGPT-maker **[OpenAI](https://www.tag24.com/en/tech)** will lease a massive new data center in the US for 20 years, backed by a $105 billion financing commitment from Nvidia, according to a regulatory filing published Monday.** The project will be built on the site of a former Cold War-era uranium enrichment plant in Ohio and could eventually grow to have 8 gigawatts of capacity, making it the largest single data center for artificial intelligence (AI). The data center will also run "exclusively" on Nvidia chips. SoftBank and the data center's owner, a subsidiary called SB Energy, will invest more than $4 billion into local energy infrastructure and "build at least 10 GW of new energy generation" to power the data center. OpenAI will commit $40 million to "support local priorities." Additionally, Nvidia will invest $1.5 billion into SB Energy, though the company preemptively pushed back on critiques about so-called circular financing, which has fueled fears about an AI bubble that will eventually burst. "OpenAI will pay the lease," Nvidia [wrote in a blog post](https://blogs.nvidia.com/blog/securing-the-infrastructure-of-intelligence/) on Monday, and continued that the deal was made with "the same discipline we apply to supply-chain management." **However, Nvidia's financing guarantee, its largest, marks a shift in scale for a practice that has become common in the sector: despite explosive revenue growth, AI developers still depend on financial backing from their own suppliers to build the giant infrastructure underpinning this technological revolution.** Cover photo: Unsplash/Levart_Photographer