Deep Fission Begins Field Development for Underground SMR Project in Kansas

According to a recent LinkedIn post from Deep Fission, the company has started drilling the first borehole for a data acquisition well in Parsons, Kansas, marking a shift from planning and engineering into active field development. The initial well is expected to reach about 6,000 feet underground and is described as the first of three planned wells intended to gather geological, hydrological, and thermal data.

The post indicates that this subsurface data is expected to inform engineering design, safety analysis, and regulatory planning for Deep Fission’s Gravity Reactor concept, which envisions placing small modular pressurized water reactors roughly one mile underground in sealed boreholes. By leveraging stable bedrock for shielding and containment, the approach is presented as a new deployment model for nuclear energy that could address siting, safety, and land-use concerns.

As shared in the post, Deep Fission’s work in Parsons is framed as an important step in demonstrating the feasibility of its underground SMR architecture, moving the company closer to potential pilot-scale validation. For investors, successful data collection and analysis from the three planned wells could reduce technical and regulatory risk, potentially improving the company’s prospects for attracting project finance or strategic partners.

The post also notes Deep Fission’s participation in the U.S. Department of Energy’s Reactor Pilot Program, which could be interpreted as a form of external validation and potential access to federal support mechanisms. In a competitive advanced nuclear landscape, visible progress on field development and alignment with DOE programs may strengthen Deep Fission’s positioning relative to other early-stage nuclear technology developers, though timelines, permitting, and capital intensity remain key execution risks.