SB Energy files for a Nasdaq IPO, targeting a $5-7 billion raise at a roughly $50 billion valuation
SoftBank-backed AI data center and energy infrastructure developer SB Energy has filed for an initial public offering on the Nasdaq Global Select Market and Nasdaq Texas, DCD reported on September 3. Reports place the target raise at 5 to 7 billion dollars, which would value the company at about 50 billion. J.P. Morgan, Goldman Sachs, Morgan Stanley, Citigroup and Mizuho are acting as joint lead book-running managers, and the company is also proposing a public offer of shares to retail investors who are UK tax residents. The prospectus is unusually candid about concentration risk, stating that SB Energy is "substantially dependent" on OpenAI as both tenant and equity investor, with SoftBank and OpenAI its only two customers. SB Energy is developing an up-to-10 gigawatt site in Pike County, Ohio, whose full capacity is slated to be leased to OpenAI, and it has been signed on to build and operate the 1.2 gigawatt Stargate data center in Milam County, Texas. Founded as a SoftBank subsidiary in 2011, the company also plans, alongside SoftBank, to invest at least 4.2 billion dollars in new regional grid infrastructure through a partnership with AEP Ohio. Two implications for the field. A public listing means quarterly disclosure on capital spend, schedule and tenant status for two of the largest programs in the country, which is free intelligence for anyone selling into them. It also means the financing for those programs now has to survive public market scrutiny rather than private patience.
Source: Data Center Dynamics (September 3, 2026)