Nuclear energy leader Holtec International has confidentially submitted an initial public offering application to the U.S. Securities and Exchange Commission. With over 40 years of experience in the nuclear sector, the company is set to become the first established enterprise to go public amid the current nuclear energy revival, as previous public market entrants have primarily been startups.

A June report from Barron's suggested Holtec could be valued at more than $10 billion, with annual revenues exceeding $500 million. The company is advancing the first-ever reactor restart project in U.S. history at the Palisades nuclear facility in Michigan. This pioneering initiative has subsequently inspired multiple other reactor restart plans across the nation.

According to a recent analysis, Holtec's operations extend far beyond reactor restarts. The company holds leading positions in several areas, including nuclear plant decommissioning, small modular reactor development, spent fuel management, and heat exchange equipment manufacturing. It commands the highest global market share in spent fuel transport and storage. This diversified portfolio provides business stability that is not solely dependent on the success of the nuclear resurgence.

The continuity of the company's operations is underpinned by long-term demand from over 400 operational reactors worldwide. These facilities will require ongoing maintenance, upgrades, and modification services for decades to come. Demand for services related to spent fuel transport, processing, and storage is projected to persist for at least a century.

Holtec is pursuing both reactor restart and decommissioning activities. The company acquired the Palisades plant from Entergy in June 2022 and announced its restart plan that September. The U.S. Department of Energy committed $1.5 billion in loan support for the project in 2024 and has disbursed multiple loan installments in 2025. The Nuclear Regulatory Commission has established new regulatory pathways to reissue an operating license for the facility.

Due to issues with critical components like steam generators, the project's completion has been delayed from late 2025 to mid-2026. Following the restart, Holtec will operate the plant independently through its subsidiary Holtec Palisades, with no current plans to sell it to a utility company.

In decommissioning, subsidiary Holtec Decommissioning International currently manages three projects: the Oyster Creek plant in New Jersey, the Pilgrim plant in Massachusetts, and the Indian Point Energy Center in New York. Although Holtec identified Indian Point as a potential restart candidate last year, New York's governor has expressed clear opposition, instead favoring new nuclear projects in upstate New York to meet a goal of adding 5 gigawatts of nuclear capacity.

Holtec is also expanding its small modular reactor technology into international markets. Through its wholly-owned subsidiary SMR LLC, the company has been developing SMRs for over a decade. Its design has evolved, with the SMR-300 model launched in 2023 offering a generating capacity of 320 megawatts. This pressurized water reactor uses commercially available low-enriched uranium fuel.

SMR LLC is seeking approval to build the first two SMR-300 units, named Pioneer 1 and 2, at the Palisades site. The company has submitted a construction application to the NRC and is seeking limited work authorization to begin work on certain non-nuclear systems early. This project has received $400 million in funding support from the Department of Energy.

In early 2025, Holtec secured U.S. government approval to export its SMR-300 design to India. The company's CEO has repeatedly stated that India represents one of the largest potential nuclear power markets outside of China and will be a significant future growth opportunity.

Holtec's spent fuel management business, while holding the top global market share with its HI-STORM and HI-STAR dry storage systems, faces political challenges. Lawmakers and officials in New Mexico, supported by the oil and gas industry, have actively opposed Holtec's plan to establish a HI-STORE consolidated interim storage facility. This facility was intended to consolidate a portion of the nation's temporary dry storage installations into a single location. Although Holtec received support from the Supreme Court in one lawsuit, the company ultimately canceled the entire project in 2025 after years of legal battles.

Beyond nuclear energy, Holtec is also involved in solar, geothermal, and fossil fuel sectors. Its Green Boiler product is designed to replace retiring coal-fired plants by storing energy from solar sources or its SMR-300 reactors using engineered salts, enabling dispatchable power generation.