Deep Fission Expands Market Interest with Potential 18.5 GW Customer Pipeline for Underground Nuclear Technology
Deep Fission, Inc. (Nasdaq: FISN), an advanced nuclear energy company focused on developing innovative small modular reactor (SMR) technology, has announced a significant milestone in its commercial development strategy. The company revealed that it has entered into a series of Letters of Intent (LOIs) with data center operators, industrial developers, co-development partners, industrial parks, and other strategic organizations that collectively represent up to 18.5 gigawatts (GW) of potential electricity generation capacity.
The announcement highlights growing industry interest in Deep Fission’s unique approach to nuclear power generation, which involves deploying small modular pressurized water reactors approximately one mile beneath the earth’s surface. The company believes this underground deployment model could offer a safer, more scalable, and potentially more cost-effective pathway for expanding clean energy generation at a time when electricity demand is rising rapidly across multiple sectors.
Demand for reliable, carbon-free electricity has increased substantially in recent years, driven by the expansion of artificial intelligence infrastructure, cloud computing facilities, advanced manufacturing operations, and large-scale industrial developments. Data centers, in particular, have emerged as one of the fastest-growing consumers of electricity, prompting operators to seek dependable power sources capable of supporting continuous operations while helping meet sustainability objectives.
According to Deep Fission, the growing number of potential customers and partners demonstrates increasing confidence in the company’s technology and deployment strategy. The collection of LOIs represents a broad range of organizations evaluating nuclear energy solutions to address long-term power requirements and support future growth plans.
Liz Muller, Chief Executive Officer and co-founder of Deep Fission, said the expanding pipeline reflects strong market interest in the company’s innovative underground reactor concept.
“The growing pipeline is a testament to the urgent interest in our mile-deep deployment model,” Muller stated. She noted that developers of data centers and other industrial facilities are actively searching for energy solutions that can be deployed quickly and expanded efficiently as demand grows.
Muller added that Deep Fission’s Gravity Nuclear Reactor technology is designed to meet these needs by providing a scalable nuclear energy platform that can support large electricity loads while minimizing land-use requirements and addressing safety concerns associated with traditional nuclear plant designs.
Unlike conventional nuclear facilities that require extensive surface infrastructure, Deep Fission’s approach places reactors deep underground inside specially drilled boreholes. The company believes this design can leverage the natural geologic environment to enhance safety and reduce construction complexity. By installing reactors approximately one mile below ground, the system aims to use the surrounding rock formations as an additional layer of protection while potentially lowering the overall footprint of nuclear power generation projects.
The company has already begun advancing its first major demonstration project at the Great Plains Industrial Park in Parsons, Kansas. This project is being developed as part of the U.S. Department of Energy’s Reactor Pilot Program, an initiative intended to accelerate the deployment of advanced nuclear technologies and support innovation across the domestic nuclear industry.
As part of the project’s progress, Deep Fission recently completed drilling its first data acquisition borehole to a depth of approximately 6,000 feet. The borehole is expected to provide valuable geological and engineering information that will help validate assumptions related to reactor deployment, underground operations, and long-term performance.
The successful completion of this drilling milestone marks an important step toward demonstrating the technical feasibility of the company’s underground reactor concept. Data gathered from the borehole will help engineers refine designs, assess geological conditions, and support future licensing and development efforts.
Looking ahead, Deep Fission plans to focus on several key technical milestones. One of the company’s next objectives is to demonstrate its ability to drill a commercial-scale borehole suitable for housing a nuclear reactor system. Successfully completing this phase would represent a major advancement toward commercial deployment and provide further validation of the company’s engineering approach.
Following the commercial-scale drilling demonstration, Deep Fission intends to proceed with the deployment of a prototype reactor. The prototype installation will be designed to showcase the safety, performance, and operational capabilities of the Gravity Nuclear Reactor technology under real-world conditions.
While the announcement of up to 18.5 GW in potential generation capacity represents a substantial commercial opportunity, the company emphasized that the current LOIs remain preliminary in nature. The agreements are non-binding and are intended primarily to establish a framework for continued discussions and evaluation of potential projects.
Deep Fission clarified that the letters do not include commitments to purchase electricity, provide financing, construct facilities, grant exclusive development rights, or deploy a specific number of reactors. Additionally, either party involved in the arrangements may terminate the agreements without penalty.
As a result, the announced pipeline should be viewed as an indication of market interest rather than guaranteed future business. The eventual conversion of these opportunities into binding contracts will depend on several factors, including technical progress, economic feasibility, regulatory approvals, financing availability, and customer-specific project requirements.
The company also outlined its anticipated regulatory timeline as it works toward commercialization. Assuming continued progress in development and testing activities, Deep Fission expects to submit an application for a commercial license to the U.S. Nuclear Regulatory Commission (NRC) during the first half of 2027.
Obtaining NRC approval will be a critical milestone in the company’s path toward commercial deployment. The licensing process is expected to involve comprehensive technical reviews, safety assessments, environmental evaluations, and regulatory oversight to ensure that the technology meets federal requirements for nuclear operations.
Commercial deployment plans will remain subject to successful completion of development activities, prototype testing, licensing approvals, construction milestones, financing arrangements, and customer agreements. The timing of future revenue generation will likewise depend on the achievement of these objectives.
Despite these challenges, the company believes growing interest from industrial customers, infrastructure developers, and strategic partners underscores the potential role of advanced nuclear technologies in meeting future energy demand. As power consumption continues to rise and organizations seek reliable low-carbon energy sources, Deep Fission aims to position its underground reactor technology as a scalable solution capable of supporting the next generation of industrial growth.
With its first pilot project progressing in Kansas and a potential customer pipeline representing up to 18.5 GW of generation capacity, Deep Fission continues to advance its vision of transforming nuclear energy deployment through innovative underground reactor systems that could help deliver dependable, emissions-free electricity to energy-intensive industries for decades to come.
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