Sam Altman leaves Helion board amid energy supply negotiations for OpenAI

Sam Altman is stepping down as chairman of the board of nuclear fusion startup Helion — and it's happening in the midst of negotiations over an unprecedented deal: the company intends to supply 12.5% of its electrical output to OpenAI. Helion Energy is one of the most capital-intensive startups in energy history.

The company is developing a nuclear fusion reactor based on a deuterium and helium-3 reaction. In 2021, Helion raised 500 million dollars from Altman Investments — Sam Altman's personal fund, and he has since held the position of chairman of the startup's board of directors. In 2023, the company concluded a preliminary agreement with Microsoft: the largest technology investor committed to purchasing electricity from Helion starting in 2028 — provided the reactor comes online on schedule.

Now OpenAI itself intends to join this club. According to TechCrunch sources, the companies are negotiating a contract under which OpenAI would gain access to 12.5% of Helion's generated output.

This is an important detail: growing demand for computational resources for training and operating large language models has turned electricity into one of the main scarce resources of the AI industry. Altman's departure from Helion's board of directors appears to be a forced move. American law strictly limits the ability of top executives to influence commercial decisions at companies where they simultaneously hold management positions.

By remaining on Helion's board while OpenAI negotiates the purchase of its energy, Altman risked facing a conflict of interest. His departure removes this contradiction — and simultaneously signals that the deal is close to completion. For Helion, the partnership with OpenAI is another way to strengthen the commercial validity of the project before the reactor actually begins producing electricity.

The startup has not yet launched a single commercial power plant: the working prototype Polaris is at the testing stage, and the timelines for industrial launch have been postponed several times. Contracts with major customers like Microsoft and OpenAI help the company maintain investor interest and build an order book before entering the market. The largest AI companies are facing an acute shortage of cheap and reliable electricity.

Data centers consume ever more capacity, traditional grids cannot keep up with the growth in demand, and renewable sources provide unstable generation. Nuclear fusion energy, if the promises of Helion and competitors like Commonwealth Fusion Systems prove realistic, could give the AI industry exactly what it seeks: an almost unlimited, carbon-neutral source of baseload power. For now, this is a bet on the future.

Neither Helion nor other fusion startups have yet demonstrated energy output exceeding the cost of initiating the reaction. Commercial launch in 2028 is an ambitious but still conditional horizon. Nevertheless, the fact that OpenAI is willing to sign an agreement to purchase capacity indicates that the largest player in the AI market is seriously considering fusion as part of its long-term energy strategy.

Altman's departure from Helion's board of directors is a small corporate maneuver, but it illuminates an important trend: AI companies are ceasing to be mere energy consumers and are beginning to actively shape the energy landscape. When the largest developer of language models negotiates directly with a fusion startup, it changes not only the structure of the electricity market — it changes the horizon of expectations for the entire industry.