The AI gold rush just revealed its financial plumbing — and it's more circular than anyone outside these deals understood.
The Summary
- SB Energy filed to go public, exposing deep financial entanglement with OpenAI: warrants worth up to $5.5 billion, lease agreements, board seat rights, and a software deal through 2028
- OpenAI is simultaneously SB Energy's biggest customer, major investor, and strategic partner — a textbook case of circular dealing in the AI infrastructure boom
- The IPO filing reveals how capital-intensive the compute buildout has become: SB Energy needs public markets to fund data centers that exist primarily to serve one tenant
The Signal
SB Energy's S-1 filing reads like a case study in vendor financing dressed up as infrastructure investment. OpenAI isn't just leasing data center space — it holds warrants that could convert to a 5% stake worth $5.5 billion, gets board representation, and has locked in capacity at facilities that don't exist yet. One Texas site is dedicated entirely to OpenAI. Another massive 8-gigawatt facility planned for Southern Ohio, built with Nvidia's involvement, will primarily serve OpenAI's compute needs.
This is the AI infrastructure game in 2026: customers are investors, investors are customers, and everyone's balance sheet depends on bets that won't pay off for years. SB Energy's own risk disclosure is unusually blunt about this dependency.
"We are dependent on OpenAI as our anchor data center tenant, representing a significant portion of our signed lease capacity."
The filing exposes three uncomfortable truths about the AI buildout:
- Data center developers can't fund expansion without taking equity stakes from their largest tenants
- AI labs can't secure compute without becoming de facto partners in infrastructure companies
- Public market investors are being asked to fund facilities with single-customer risk profiles
SoftBank owns more than half of SB Energy, but OpenAI's position is structurally more interesting. The warrants give OpenAI upside if SB Energy succeeds, which creates alignment but also raises questions about pricing. If you're both landlord and tenant, who's getting the better deal on rent? If the data center company needs to go public to fund your infrastructure, are you paying market rates or subsidized ones?
The Ohio megasite — 8 gigawatts of planned capacity — represents the scale of compute OpenAI believes it needs for the next generation of models. For context, that's enough power to run a small country. Building it requires going to public markets because even SoftBank's balance sheet has limits.
The Implication
Watch for more of these circular deals to surface as AI labs race to secure compute. The infrastructure layer of Web4 is being built through financial arrangements that blur the line between customer, investor, and strategic partner. If you're tracking who actually owns the picks and shovels in this gold rush, the answer is increasingly: everyone and no one.
For retail investors eyeing SB Energy's IPO, the bet is simple: do you believe OpenAI's compute needs will grow fast enough to justify building data centers at this pace. If OpenAI stumbles, SB Energy's entire business model craters.