SB Energy Moves Toward IPO with Backing from OpenAI and SoftBank

SB Energy Corp., a digital infrastructure firm backed by SoftBank Group, has taken a significant step toward an initial public offering (IPO) by submitting a draft registration statement to the U.S. Securities and Exchange Commission. This marks an important moment for the company, which has transitioned from solar and energy storage development to a comprehensive AI infrastructure platform based in Redwood City, California.

Major Funding and Strategic Partnerships

The decision to pursue an IPO follows SB Energy's recent funding successes. In January 2026, SoftBank and OpenAI each invested $500 million into the company, contributing to a total equity capital influx of $1 billion. This investment is part of the broader “Stargate” project framework, showcasing a strategic alliance that combines financial resources with technological expertise. Before this, SB Energy secured $800 million in redeemable preferred equity from the Ares Infrastructure Opportunities Fund in 2025, bringing its total funding to over $1.8 billion. Overall, SB Energy has raised $2.4 billion through various funding rounds, attracting considerable investor interest.

The partnership with OpenAI goes beyond financial backing; it includes operational collaboration. SB Energy has been tasked with constructing and managing OpenAI’s 1.2-gigawatt data center in Milam County, Texas. OpenAI's co-founder Greg Brockman remarked that this partnership leverages SB Energy’s infrastructure strengths alongside OpenAI’s engineering expertise, aiming for “fast, reliable compute scaling.” This collaboration is further strengthened by SB Energy’s acquisition of Studio 151, a firm specializing in data center construction management, which enhances its operational capabilities.

Ambitious Projects and Regulatory Challenges

One of SB Energy's most ambitious projects is its mega initiative in Piketon, Ohio. Announced in March 2026, this project is a public-private partnership with the U.S. Department of Energy, focusing on building a 10-gigawatt data center alongside up to 10 gigawatts of power generation facilities, primarily utilizing natural gas. The total investment for this undertaking is projected at $33.3 billion, with substantial backing from Japanese sources, aligning with the U.S.-Japan Strategic Trade and Investment Agreement.

However, the project has faced opposition. Shortly after the launch ceremony on March 20, 2026, local residents submitted a petition to ban hyperscale data centers in Ohio, highlighting potential resistance to large-scale infrastructure developments.

Addressing Power Supply Constraints

SB Energy’s approach to the IPO and its operational strategies demonstrate a strong awareness of the critical challenges facing AI infrastructure, particularly regarding power supply. The demand for AI compute clusters in the U.S. is growing rapidly, yet public grid upgrades are lagging, resulting in extended interconnection queues for data centers. The International Energy Agency reported that electricity consumption by global data centers surged by 17% year-over-year in 2025, with expectations of doubling by 2030. Currently, energy costs account for over 60% of the operating expenses for AI data centers, underscoring the urgency of addressing these power supply limitations.

The recent downgrade of SoftBank’s credit outlook by S&P has led SB Energy to pursue its IPO independently, allowing SoftBank to inject new capital into its AI infrastructure initiatives without increasing its debt load. This decision is vital as global demand for reliable and efficient AI infrastructure continues to rise.

SB Energy's IPO plans, supported by a stable partnership with OpenAI and SoftBank, reflect a strategic response to the growing challenges in AI infrastructure development. As the company navigates these complexities, its success may depend on effectively addressing the critical power supply issues that could hinder the expansion of AI capabilities.