OpenAI explores major fusion energy deal with Helion as Altman steps down from board

OpenAI and Helion Energy Explore Partnership at Significant Scale

OpenAI CEO Sam Altman has stepped down from the board of directors of Helion Energy, the Altman-backed fusion startup he has supported since 2015, as the two companies begin exploring a partnership that could reshape how AI companies secure long-term energy supplies 1

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. Altman announced his departure on social media platform X, explaining that dual roles had become untenable as OpenAI eyes future collaborations with Helion Energy. While stepping down from the board, Altman will maintain a financial interest in the company and has recused himself from any deal negotiations to avoid conflicts of interest 1

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According to reports, OpenAI is in advanced talks to buy electricity from Helion Energy, with discussions centering on the company securing an initial 12.5% of Helion's production 2

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. The proposed framework would give OpenAI access to the equivalent of 5 gigawatts by 2030, scaling dramatically to 50 gigawatts by 2035 2

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. This potential agreement underscores the broader race among technology giants to lock in power sources as the power demands of artificial intelligence continue to strain electrical grids worldwide 1

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Fusion Energy Could Power AI Operations

Fusion energy, which creates energy using the same process as the sun and stars, represents a potentially abundant clean energy source capable of matching the massive compute constraints facing AI companies 2

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. Helion believes it is approaching scientific breakeven, a critical milestone where the fusion process generates more energy than it consumes 2

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. No private company has yet achieved this breakthrough, making the timeline for delivering on the 2030 and 2035 commitments a key question for investors and industry observers 2

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Helion was founded in 2013 and has raised over $1 billion in total funding, including a $425 million Series F round closed in January 2025 that valued the company at $5.4 billion 1

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. Altman led the company's $500 million Series E round in 2021 and holds a sizable, though undisclosed, stake 2

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. The company is currently constructing Orion, its first commercial facility in Washington state, with development beginning in July 2025 and a target of delivering an initial 50 megawatts to Microsoft by 2028 4

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AI Infrastructure Demands Drive Energy Partnerships

The talks with Helion Energy come as OpenAI confronts significant challenges around AI infrastructure and energy constraints. Training and running advanced models at scale requires enormous amounts of electricity, making power one of the industry's most significant bottlenecks 4

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. Microsoft, Google, and Amazon have all struck deals with nuclear and fusion companies that would have seemed far-fetched just a few years ago, reflecting the urgency of securing energy deals 1

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OpenAI's energy challenges are compounded by its struggles with data centers. The company still doesn't own any data centers outright, instead relying on purchasing cloud capacity from companies such as Oracle, Microsoft, and Amazon 3

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. Virginia Tech engineering professor Walid Saad told CNBC that building a one-gigawatt data center could take three to ten years, yet OpenAI claims such a facility will be ready before the end of this year 3

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Strategic Shift Ahead of IPO

Altman's departure from Helion's board is part of a broader strategic repositioning as OpenAI prepares for a highly anticipated IPO. The company has dramatically scaled back its infrastructure ambitions, reducing its commitment from $1.4 trillion to $600 billion by the end of the decade 3

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. "OpenAI has come to the realization that the market doesn't necessarily appreciate the reckless approach to growth and spending," Futurum Group CEO Daniel Newman told CNBC. "The market wants to see OpenAI's revenues rolling at a pace in which the spending can be justified" 3

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According to The Information, Altman has relinquished direct oversight of OpenAI's safety and security teams to focus on "capital, supply chains, and building data centers at unprecedented scale" 4

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. The company is now orienting aggressively toward enterprise use cases and coding agents, shutting down its popular video-generating model Sora to reallocate resources toward its next major large language model and enterprise tools 4

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. OpenAI has also strengthened its financial leadership, appointing former DocuSign CFO Cynthia Gaylor to oversee investor relations 4

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Reuters first reported in October 2025 that OpenAI could file for an IPO as early as the second half of 2026, targeting a valuation of up to $1 trillion and potentially raising at least $60 billion 4

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. In February, the company secured $110 billion in a private round with a pre-money valuation of $730 billion 5

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. As Altman works to convince investors that OpenAI can turn unprecedented capital expenditure into sustainable returns while pursuing artificial general intelligence (AGI), the Helion partnership represents a critical piece of the infrastructure puzzle needed to power its AI operations at scale.