Samsung C&T pays $70 million for first call on Kairos Power's US reactor construction

Samsung C&T's building arm gets two things for the money. One is a place reviewing the design and constructability of Hermes, the demonstration reactor Kairos Power is building in Oak Ridge, Tennessee ^[8][6]. The other is priority rights to the engineering, procurement and construction work on the commercial reactors Kairos plans to build in the United States ^[9]. The announcement does not specify an ownership stake or how many commercial units those rights cover ^[15].

So the right attaches, for now, to a pipeline of plans, with Hermes the one reactor actually being built ^[1]. That makes the Hermes schedule the variable that prices the whole thing. The review work is the part Samsung C&T can start on, and it starts on the first non-light-water reactor the US Nuclear Regulatory Commission has approved in about 50 years ^[7].

Kairos cools with molten salt ^[3]. Light-water SMRs use water and have to run at high pressure, while non-light-water coolants such as molten salt allow high-temperature operation at low pressure ^[4]. Analysts cited by Seoul Economic Daily say that reduces the burden of high-pressure equipment, improving safety and efficiency, and that the high-temperature heat can serve a range of energy needs ^[5].

"We are very pleased to establish a partnership with Samsung C&T," Kairos Power chief executive Mike Laufer said ^[11]. Lee Chang-wook, executive vice president and head of Samsung C&T's energy solutions division, called the agreement an important milestone ^[12]. "Through close cooperation with Kairos Power, we plan not only to successfully carry out the SMR demonstration project but also to create various business opportunities in the global commercialization market," he said ^[12].

Samsung C&T says it wants to use the partnership to move beyond simple EPC construction into investment, development and operations ^[13]. The two companies also plan to look together at nuclear markets including South Korea, Southeast Asia and Europe ^[10]. The cooperation the company had before this was centred on Europe ^[14].

I think the $70 million buys an option on construction backlog. It is what Samsung C&T will pay to hold the EPC position on the first US commercial units before any tender exists ^[9], with the Hermes review as the way it learns the design in the meantime ^[8]. The counter-thesis is modularity. If Kairos's commercialization and supply model puts most of the content in a factory, the site scope per unit is thinner than a priority right suggests, and the option covers less work than the headline number implies. Evidence against that would be Samsung C&T buying the same position from a second developer, which would make this one option among several at a price.

The announcement documents a Korean contractor moving its SMR work from Europe into a US non-light-water program ^[14], and a US developer choosing its builder before it has a commercial order to place ^[9].