gigawatt AI data center campus from SoftBank’s SB Energy
OpenAI Group signed a 20-year lease for a data center campus in Ohio to be built by SoftBank’s SB Energy. The site will use at least 10 GW of new energy infrastructure, including a $33B power plant and $4.2B transmission lines. Nvidia backstops initial capacity and is buying a $1.5B stake in SB Energy. Construction runs to 2032; 800 MW starts in 2028.
How this was made

The 30-second read
Why it matters
The disclosed structure ties OpenAI’s compute rollout to 10+ gigawatts of new energy infrastructure, while Nvidia’s backstop and potential loss coverage introduce a measurable contingent exposure. The project’s first 800MW is targeted for 2028, with construction through 2032.
Market read
This is a large, infrastructure-backed AI compute commitment with explicit Nvidia credit support mechanics and a major power buildout timeline.
What to watch
Closed-loop cooling claims are not technically detailed; actual water, coolant, and reliability performance could affect operating costs and timelines.
Background
OpenAI is described as securing long-lived compute infrastructure via a 20-year lease on a former uranium processing site, with SB Energy leading power and transmission buildout.
Ticker impact
Nvidia backstops the first 4.25 gigawatts and may cover SB Energy losses, paying any difference up to $105 billion.
Near-term sentiment likely positive for AI demand visibility, but investors may focus on contingent liability magnitude.
The article discloses explicit backstop mechanics, loss coverage, and a $1.5 billion stake, which can affect perceived risk-adjusted returns.
Market effects
Reinforces the AI compute supply chain linkage between GPU demand, power generation, and grid-scale transmission buildouts.
Ohio becomes a focal node for hyperscale AI power and data center capacity, potentially affecting local utility and construction activity.
Highlights a capital-intensive model for AI expansion that may influence how other AI operators structure power and financing.
Counterpoint
The headline AI-factory narrative may mask execution risk and contingent liabilities, especially if lease economics or tenant demand shift.
Key entities
- companyOpenAI Group PBC
Announced a 20-year lease for an Ohio data center cluster supported by 10+ gigawatts of new energy infrastructure.
- companySB Energy
SoftBank unit that will own and operate the Ohio campus and plans a $33 billion power plant plus $4.2 billion transmission lines.
- companyNvidia Corp.
Backstops the first 4.25 gigawatts, bought a $1.5 billion stake in SB Energy, and may cover losses up to $105 billion.
- companySoftBank Group Corp.
Parent of SB Energy, with SB Energy reportedly seeking up to a $50 billion valuation and potentially planning an IPO soon.

