SB Energy’s IPO Puts SoftBank at the Center of America’s AI Power Buildout

The most revealing number in SB Energy’s initial public offering filing is not the proposed share count or the IPO price. Both are still blank. It is the distance between what the company operates today and what it has already contracted for tomorrow. SB Energy reported 8.8 gigawatts of contracted data-center capacity and roughly $439 billion of backlog, yet none of its data centers was operating when the registration statement was filed.

The IPO asks public investors to finance a transition that is not finished

SB Energy has applied to list on the Nasdaq Global Select Market and Nasdaq Texas under the ticker SBE. J.P. Morgan, Goldman Sachs, Morgan Stanley, Citigroup and Mizuho are the joint lead book-running managers. The company also plans a U.K. retail component through a platform operated by Marex Financial.

The filing turns what had been a series of enormous private infrastructure announcements into a public-market proposition. In the first half of 2026, SB Energy generated $138.7 million of revenue, up 66.4% from a year earlier. Almost all of that revenue still came from its legacy power business. Its data-center segment has not yet produced meaningful revenue.

Against that current revenue base sits approximately $430 billion of data-center backlog. Backlog is not cash, and it is not profit. It represents future contracted revenue expected over long-lived agreements, subject to construction, customer performance, financing, interconnection, permitting and the actual start of rent. SB Energy says meaningful data-center revenue is expected only when the first phase of its Cosmos Technology Campus reaches rent commencement, which it currently expects in the fourth quarter of 2026.

A $3.21 billion loss that needs to be unpacked

For the six months ended June 30, SB Energy reported a net loss attributable to the company of $3.2089 billion on $138.7 million of revenue. Read without context, the ratio is alarming. But the filing shows that most of the loss did not represent cash leaving the business at that rate.

The half-year result included approximately $589.5 million of non-cash stock-based compensation expense and $2.5731 billion of non-cash expense from changes in the fair value of warrant liabilities. The latter is closely tied to the company’s relationship with OpenAI.

OpenAI received warrants in connection with its investment and data-center arrangements with SB Energy. Those warrants were valued at about $5.5 billion at June 30, up sharply from their value when issued. As the assumed value of SB Energy increased, the accounting value of the warrant liability rose as well, creating a large reported loss.

That distinction matters: saying SB Energy “burned $3.2 billion” in six months would be misleading. But calling the loss meaningless would be equally wrong. The warrants represent real economic consideration, potential future dilution and, under the lease accounting described in the filing, a cost that can affect the economics of future OpenAI rental revenue.

OpenAI is tenant, investor—and concentration risk

SB Energy’s future data-center business is inseparable from OpenAI. In January, SoftBank Group and OpenAI each invested $500 million in SB Energy. OpenAI selected SB Energy to build and operate a previously announced 1.2 GW site in Milam County, Texas, and the companies established a broader preferred partnership around future data-center construction.

Then came Ohio. At the PORTS-Pike Technology Campus in Pike County, OpenAI has entered into a 20-year lease under which SB Energy will build, own and operate capacity designed to reach 8 IT-GW. NVIDIA will be the exclusive AI compute infrastructure provider, with the initial deployment designed for 4.25 IT-GW and an option to support the remaining 3.75 IT-GW.

That creates unusually strong contractual visibility—and unusually strong concentration. SB Energy explicitly says it is substantially dependent on OpenAI. The same company is a major tenant, an equity investor, a warrant holder and a strategic partner. If OpenAI’s financing, demand forecasts, technology plans or willingness to expand change materially, the effects would reach deep into SB Energy’s backlog.

NVIDIA is financing the ecosystem, not merely supplying GPUs

NVIDIA’s role goes far beyond selling compute hardware. The August PORTS-Pike announcement said NVIDIA would invest $1.5 billion in SB Energy. The S-1 also describes a separate $1.5 billion prepaid forward arrangement tied to non-voting Class N shares, bringing the economic commitment associated with the two structures to roughly $3 billion.

At PORTS-Pike, NVIDIA is also providing credit support on the land, power and shell buildout for the initial 4.25 IT-GW. Public disclosures describe a guarantee framework that could reach as high as $105 billion. That support is designed to help make the project financeable even though the end customer is an AI company whose infrastructure needs are growing far faster than its traditional balance sheet.

This is why debates over “circular financing” have followed the AI buildout. NVIDIA invests in an infrastructure company that will host NVIDIA systems for OpenAI; OpenAI invests in and leases from that infrastructure company; SoftBank controls the infrastructure company while also being one of OpenAI’s largest strategic backers. The relationships reduce financing friction, but they also make it harder to separate independent market demand from ecosystem-supported demand.

Why a solar developer became an AI infrastructure company

SB Energy is not starting from zero. Founded in the U.S. market in 2019, it built its capabilities around large-scale solar, batteries, project finance, interconnection, procurement and power contracting. As of June 30, the filing describes roughly 2.2 GWac of operating solar and battery-storage assets and another approximately 2.5 GW under construction.

The Orion Solar Belt in Texas illustrates the bridge between the old business and the new one. The 900 MWdc project entered commercial operation in 2024, uses more than 1.3 million U.S.-made solar modules and counts Google’s Midlothian data center as its anchor customer. SB Energy learned to solve the power side of hyperscale computing before it began trying to own the computing real estate as well.

That is the logic behind the company’s “power-first” identity. The hardest constraint in AI infrastructure is increasingly not land and not even GPUs. It is the ability to secure hundreds of megawatts—or several gigawatts—of reliable power, obtain interconnection, finance grid upgrades, order equipment with multi-year lead times and deliver all of it on a schedule that matches rapidly changing compute demand.

PORTS-Pike changes the scale of the word “data center”

The Ohio project is difficult to compare with an ordinary data center campus. The ultimate design calls for 8 IT-GW of compute capacity supported by at least 10 GW of new generation. SB Energy and SoftBank have also announced at least $4.2 billion of regional grid investment through a partnership with AEP Ohio intended to protect existing ratepayers from the project’s infrastructure costs.

The initial 800 MW of IT capacity is expected to begin coming online in phases from 2028. The campus spans private land and areas connected to the former Portsmouth Gaseous Diffusion Plant, turning part of a Cold War nuclear-industrial landscape into an AI infrastructure zone. SB Energy has said the campus will use closed-loop cooling and be paired with major community-benefit commitments.

The scale also exposes the energy contradiction at the heart of the AI boom. SB Energy grew through solar, but a multi-gigawatt campus requires dispatchable power around the clock. Public reporting on PORTS-Pike includes plans for a very large natural-gas generation buildout alongside renewable resources and grid upgrades. Investors buying SB Energy will therefore be buying an integrated energy company, not a pure-play renewable developer.

There are two “SB Energy” histories—and Japanese readers should not confuse them

SoftBank Group created a Japanese company called SB Energy in October 2011 after the Great East Japan Earthquake, with the goal of accelerating renewable-energy deployment. By early 2023 that Japanese business had developed 773 MW of renewable generation in Japan and abroad. SoftBank then transferred 85% of it to Toyota Tsusho; the business became Terras Energy.

The U.S. business going public is separate. SoftBank Group explicitly said during the 2023 Japanese transaction that SB Energy Global Holdings Limited, which operated entirely in the United States, was not part of the sale. The U.S. platform launched into the American market in 2019 and has since expanded from utility-scale renewable power into batteries and data centers.

There is still a conceptual through-line. In 2011 SoftBank treated energy as a strategic bottleneck exposed by disaster and nuclear disruption. In 2026, it is treating energy as the bottleneck to artificial intelligence. The object has changed—from decarbonizing the power system to feeding compute—but the strategy again starts from scarcity in electricity infrastructure.

SoftBank will still control the company after the IPO

The proposed listing does not amount to SoftBank Group giving up control. SB Energy expects to remain a “controlled company” under Nasdaq rules after the offering. That status can exempt it from some board-independence requirements that normally apply to public companies.

For minority investors, control cuts both ways. SoftBank’s balance sheet, political access, project network and relationship with OpenAI can accelerate projects that a stand-alone developer might struggle to finance. But concentrated control also means public shareholders will have less influence over governance than they would at a widely held company.

OpenAI may have governance influence as well: the filing describes a board-nomination right if its ownership remains above specified thresholds. When a customer is also a shareholder and potential board participant, enforcing commercial agreements can become more complicated if interests diverge.

Japan is present in more than the shareholder register

Although SB Energy is a U.S. infrastructure company seeking a U.S. listing, the Japanese financial footprint is visible. SoftBank Group is the controlling shareholder. Mizuho is one of the joint lead bookrunners, while MUFG, SMBC Nikko and Daiwa Capital Markets America appear in the broader underwriting syndicate.

That makes the transaction more than an overseas listing by a SoftBank affiliate. It is a channel through which Japanese corporate capital and Japanese financial institutions are helping fund the buildout of American AI power infrastructure. The experience gained in U.S. gigawatt-scale projects could later matter in Japan, where AI data-center development is already colliding with grid capacity, generation siting and transmission constraints.

Five questions public investors will have to answer

1. Is OpenAI demand durable enough? A backlog can be enormous and still be concentrated. Customer credit and long-run AI demand are central to the valuation.

2. Can projects be delivered at this scale? Between a signed lease and rent commencement sit transformers, gas turbines, transmission, construction labor, permits, cooling systems, GPU deliveries and financing.

3. How much capital remains to be raised? An IPO cannot by itself fund dozens of gigawatts of generation, transmission and data-center construction. Project debt, tax equity, guarantees and additional corporate capital will remain essential.

4. What happens to power economics? Twenty-year data-center leases are ultimately exposed to gas prices, renewable costs, grid tariffs, carbon policy and equipment inflation.

5. How should investors price related-party density? SoftBank, OpenAI and NVIDIA occupy multiple roles across ownership, tenancy, supply and credit support. That can be a competitive moat—or a source of correlated risk.

$439 billion is not an enterprise value. It is a test of execution

SB Energy’s filing arrives at a moment when AI infrastructure has become a capital-markets story as much as a technology story. The bottleneck is shifting from access to chips toward access to power, transmission, financing and industrial construction. A company that can solve those constraints together can plausibly earn a premium over a conventional power developer.

But the filing also makes clear what investors are being asked to underwrite. Most of the data-center business is not operating. The dominant customer relationship is concentrated. The Ohio campus is vast enough to require its own energy and grid strategy. And the largest numbers in the prospectus are long-dated contractual expectations, not current earnings.

SB Energy began as a utility-scale renewable developer and is trying to become something more unusual: an owner of the industrial estates where electricity is converted into artificial-intelligence compute. The IPO will ask public investors to price that future before most of it has been built.