Terra Innovatum has shared 12 of the 18 preliminary chapters of the safety report for its SOLO microreactor with the U.S. Nuclear Regulatory Commission (NRC). The Nasdaq-listed company (ticker: NKLR) announced on October 22 that it will deliver the six remaining chapters by October 30, 2026.
The documents are part of the Preliminary Safety Analysis Report, which accompanies a construction permit application. They are draft submissions made under a readiness review, a voluntary process that lets NRC staff examine the material before the formal application is filed. The company expects the next step of the review by the end of November, in line with the agency’s schedule. The official application will follow.
The process began over the summer. In July, Terra Innovatum asked the NRC for a preliminary review, and in August the agency launched the first phase, covering the environmental report and nine chapters of the safety report. Some technical reports on the reactor had already been docketed by the NRC, meaning the agency considered them complete enough to begin detailed review.
Procurement is moving forward alongside the paperwork. According to the company, orders and advance payments have been placed for the graphite components, the turbine and generator, and the air-cooled condenser. Chief Executive Officer Alessandro Petruzzi stressed that the equipment being purchased is for the first reactor intended for deployment, not for a prototype or experimental demonstration. Manufacturing partners are preparing to build the unit.
The design relies on commercially available components and low-enriched fuel, up to 4.95% uranium-235. This choice reduces dependence on fuel supply chains that have yet to be built, a bottleneck holding back several advanced reactor developers. On the financial side, the company reports cash of $91.1 million as of June 30, 2026, and believes these resources are enough to cover licensing, manufacturing, construction and the first years of operation of the first unit without new capital raises, under its current plan.
The roadmap calls for the first reactor in 2027 and commercial rollout from 2028. If the formal application is filed within the year, SOLO could become one of the first microreactors licensed for construction in the United States, in a market that sees data centers, industry and healthcare as early customers.
