Nvidia's reported $3bn SB Energy stake makes the chip vendor a guarantor of its own demand

Nvidia is in talks to invest up to $3bn in SB Energy, the SoftBank-backed developer and power platform behind a planned up-to-10GW data center campus in Pike County, Ohio, built in partnership with OpenAI, according to reporting from The Information relayed by DataCenterDynamics ^[1][2]. The cash is the least interesting part: it would sit inside an up to $100bn credit support package for a campus estimated to cost $500bn if fully built out ^[3].

Run the ratio and the shape of the deal becomes clear. The equity is roughly 3 percent of the credit support Nvidia is reportedly prepared to extend ^[1], and about 0.6 percent of the projected full build cost ^[2]. What Nvidia would actually be supplying is not capital but creditworthiness. Per the report, Nvidia would guarantee OpenAI's lease at the site, where OpenAI would run Nvidia hardware, and would also guarantee SB Energy's future project financing ^[9]. In July, reports surfaced that Nvidia was discussing a $250bn backstop for the project, which would let SoftBank raise debt on more favorable terms and make the facility viable ^[10].

The equity itself is split into two tranches: $1.5bn when the Ohio deal is signed, and $1.5bn as part of SB Energy's planned IPO, which was first reported in May ^[4][5]. OpenAI is already an investor in SB Energy ^[6]. So the chip vendor would become a shareholder in its largest customer's landlord, alongside that customer, while guaranteeing the rent that customer pays and the debt the landlord raises against it. Circularity is not the objection here; concentration is. One balance sheet ends up standing behind the silicon, the tenant, the developer and the lenders.

The power arrangement is equally unusual. SB Energy will invest $33.3bn of Japanese funding in 9.2GW of new natural gas generation at the site, working out to roughly $3.6bn per gigawatt ^[11][4]. The US government will own the power plant, and the campus sits on Department of Energy land ^[11]. The site is the Portsmouth Gaseous Diffusion Plant in Scioto Township, built in the 1950s south of Piketon, which once produced weapons-grade enriched uranium for the Atomic Energy Commission, the US nuclear weapons program and Navy submarines before shifting to commercial reactor fuel ^[12][13]. The DOE named it one of 16 federal sites for rapid data center construction last year ^[14]. A data center proposal for the site, from New Day Data Centers LLC, emerged in January ^[12].

Timing matters for anyone pricing the guarantees. Ground was broken in March 2026, according to The Information, and the first phase is expected to begin operations in 2028 at 800MW ^[8][7], about 8 percent of the campus ceiling ^[3]. That is a long gap between contingent liability and revenue. It also fits a pattern: Nvidia committed $2bn to Nebius in March and has since made multibillion-dollar investments in Safe Superintelligence and Iren ^[15].

Three things to watch. Whether SB Energy's IPO filing discloses the Nvidia guarantees and how they are quantified ^[5]. Whether the reported $250bn backstop is ever confirmed in a signed document rather than a report ^[10]. And whether the 800MW first phase holds its 2028 date, because every quarter of slippage is a quarter of guarantee exposure without cash flow behind it ^[7].