Deep Fission, Inc. (Nasdaq: FISN) announced that it has signed non‑binding Letters of Intent (LOIs) with data‑center developers, co‑developers, industrial parks and strategic partners covering up to 18.5 gigawatts of potential generation capacity. The company highlighted that the growing pipeline “is a testament to the urgent interest in our mile‑deep deployment model,” echoing CEO and co‑founder Liz Muller’s view that data‑center developers and other industrial partners need a solution that can be deployed quickly and then scaled rapidly. These LOIs form the backbone of Deep Fission’s plan to bring its first commercial Gravity Nuclear Reactor to market in 2027‑2028, a timeline that hinges on continued technical progress, financing, and regulatory approvals.
Deep Fission Announces LOIs Representing Up to 18.5 GW
The LOIs involve entities that could host the company’s mile‑deep small modular pressurized water reactors, but they do not obligate any party to purchase electricity, finance projects, construct facilities or grant exclusivity. Either side may terminate the arrangements without penalty, and no firm purchase commitments, financing terms, or construction schedules have been disclosed.
Deep Fission is currently advancing its first reactor project at the Great Plains Industrial Park in Parsons, Kansas, under the U.S. Department of Energy’s Reactor Pilot Program. The firm has completed drilling of an initial data‑acquisition borehole to roughly 6,000 feet and plans to demonstrate commercial‑scale drilling and the safe deployment of a prototype reactor. Muller emphasized that the “Gravity Nuclear Reactor” combines established pressurized water reactor technology with a novel underground deployment model designed to simplify construction, enhance safety, and support scalable commercial deployment.
Subject to continued technical progress, the company intends to file a commercial license application with the U.S. Nuclear Regulatory Commission in the first half of 2027. The timing and scope of any commercial deployment, definitive customer contracts and future revenues will depend on successful completion of development and testing activities, regulatory approvals, construction, customer arrangements and other factors.
Relevance to Utilities and Industrial Power Buyers
The announced pipeline reflects growing interest from data‑center developers and industrial partners in a power source that can be installed quickly and scaled rapidly. Deep Fission’s Gravity Nuclear Reactor places a small modular pressurized water reactor in a borehole approximately one mile underground, a design the company says simplifies construction, enhances safety and supports scalable baseload power.
For utilities and large‑scale power consumers, the prospect of a low‑carbon, underground nuclear option could diversify supply portfolios and reduce exposure to surface‑site constraints such as land availability, permitting delays and public opposition. However, the LOIs are non‑binding, and the company has not disclosed any firm purchase commitments, financing terms or construction schedules.
Investment and Grid Implications
If the company achieves its 2027‑2028 commercial‑operation target, the technology could introduce a new class of baseload generation that occupies a minimal surface footprint. This may be attractive in regions where grid capacity is constrained by land use or where data‑center clusters seek reliable, carbon‑neutral power.
Deep Fission’s progress is tied to several risk factors, including early‑stage development, drilling and construction challenges, supply‑chain availability, and the need for NRC, DOE and other governmental approvals. The company’s forward‑looking statements acknowledge that actual results could differ materially from the expectations expressed in the announcement.
Key Takeaways
- Deep Fission signed LOIs covering up to 18.5 GW of potential generation capacity with data‑center developers, co‑developers, industrial parks and strategic partners.
- The company is advancing its first reactor at the Great Plains Industrial Park in Parsons, Kansas, and plans to apply for a commercial NRC license in the first half of 2027.
- The LOIs are non‑binding; no commitments to purchase electricity, finance projects or construct facilities have been made.
EnergyInsyte's Take
The LOIs illustrate early market curiosity in underground small modular reactors, but the lack of binding contracts means commercial traction remains uncertain. Executives should monitor Deep Fission’s drilling milestones, NRC licensing progress and any definitive financing agreements before assessing the technology’s suitability for grid or industrial power strategies.
Source: Businesswire
