NuScale Starts Building Reactor Hardware, but a Customer Order Is Still Missing

NuScale Power has moved one piece of its small modular reactor from design work into manufacturing. The company signed a contract with Doosan Enerbility to produce the upper reactor coolant system for the first NuScale Power Module at Doosan's Changwon facility in South Korea.

The agreement matters because the upper reactor coolant system is a core part of the module, not a prototype presentation or licensing milestone. NuScale and Doosan have worked together since 2019, and Doosan said the contract begins production of a First Article unit. NuScale's 77-megawatt module design received U.S. Nuclear Regulatory Commission approval in May 2025.

Important commercial details remain absent. Neither company disclosed the contract value, a delivery schedule for a customer project or the identity of a buyer. NuScale said long-lead material for 12 modules was already in production at Doosan and carried at $68.6 million as of June 30, 2026, but inventory and manufacturing preparation are not the same as a binding reactor order.

That distinction is central to NuScale's investment case. The company reported only $75,000 of revenue in the second quarter of 2026, down from $8.1 million a year earlier. Its exclusive commercialization partner, ENTRA1, is negotiating with the Tennessee Valley Authority over a potential project covering up to 6 gigawatts, or about 72 modules, but the agreement remained nonbinding in the source material.

NuScale had about $1.9 billion of cash and investments at June 30, giving it resources to fund development. Share dilution is the offsetting cost. The source analysis says Class A shares plus Class B units increased to 429.7 million from 231.4 million at the end of 2023. NuScale also paid ENTRA1 $507.4 million after the nonbinding TVA agreement triggered an initial milestone, while a binding power-purchase agreement could trigger another large payment before ENTRA1 places a module order.

The Doosan contract therefore reduces manufacturing uncertainty without resolving customer demand. It shows that a qualified supplier is preparing real hardware for the approved design, which is a necessary step toward deployment. It does not establish project financing, power-purchase terms or committed module revenue.

The next decisive evidence will be a binding customer agreement that connects this manufacturing work to a named project and payment schedule. Until then, investors should treat the contract as execution progress rather than proof of commercial scale.