Issues and challenges of SMR in the United States

After the cancellation of a key project and a cost explosion, the US small nuclear reactor (SMR) industry faces new challenges, but remains hopeful for commissioning by 2030.

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2023 was a difficult year for SMRs, particularly with the cancellation of the NuScale project in Idaho, the only SMR to have been licensed by the US Nuclear Regulatory Commission (NRC). Project costs, initially estimated at $5.3 billion, escalated to $9.3 billion, leading to the abandonment of construction.

Industry response to setbacks

Mason Lester of S&P Global Commodity Insights notes that, despite these setbacks, positive progress has been observed. The Darlington project in Ontario remains on track, with commissioning scheduled for 2029. He claims that construction should start in 2025 if the regulators give the go-ahead.

Partnerships and regional support

The Tennessee Valley Authority (TVA) continues to invest in the development of the BWRX-300. John Kotek of the Nuclear Energy Institute points out that NuScale’s problem was not the initial cost, but the risk of that cost rising. He mentions the ongoing effort to spread financial risks in order to facilitate the construction of the first models.

Innovations and technological challenges

Marcia Burkey of TerraPower, in partnership with GE Hitachi, is working on liquid sodium technology. She explains that this technology requires less material and manpower, and could therefore reduce costs. She insists on the need to standardize production in order to cut costs quickly.

Future prospects and regulatory implications

Sylvain Cognet-Dauphin of S&P Global Insights points out that, although China and Russia already have operational SMRs, the USA and Canada are well positioned to lead this industry. It also discusses recent regulatory advances that could facilitate the deployment of these technologies.

Despite substantial obstacles, the US RMS industry is showing signs of resilience and innovation, with promising projects in development and a progressively adaptive regulatory framework.

US-based Enveniam has signed an agreement with LIS Technologies Inc. to oversee the design and construction of a new laser-based uranium enrichment facility on American soil.
Faced with shorter approval timelines, several European nuclear firms, including Newcleo, Orano and Urenco, are considering relocating key industrial investments to the United States.
A consortium led by Swedish giants such as ABB, SSAB and Volvo will invest SEK400mn to support the development of small modular nuclear reactors through a strategic partnership with Vattenfall.
Russia and India are preparing an expanded agreement for the construction of VVER-1200 reactors and modular nuclear power plants, while accelerating work at the strategic Kudankulam site.
Fusion Fuel Cycles has begun work on its UNITY-2 facility, a unique test bench designed to validate the full tritium fuel cycle under fusion conditions, marking a key step toward fusion energy.
Framatome will produce TRISO fuel at Romans-sur-Isère as part of a pilot project for advanced nuclear reactors, in partnership with actors such as Blue Capsule Technology.
Sweden’s parliament has approved a major reform authorising uranium extraction, opening the door to a reassessment of the economic potential of mining projects containing this strategic mineral.
South Africa's regulator has authorised Koeberg Unit 2 to operate until 2045 following maintenance work and a long-term safety assessment.
French nuclear group Orano has confirmed the release of its representative in Niger, detained since May, as tensions remain high with the country’s junta over control of uranium assets.
EDF launches a sovereign digital platform to secure data exchanges between nuclear stakeholders, aiming to accelerate the construction of future EPR2 reactors.
ONE Nuclear Energy publishes a virtual presentation for investors detailing its industrial vision, ahead of its merger with Hennessy Capital Investment Corp. VII expected in the first half of 2026.
A majority of Americans now back nuclear energy, with strong approval for converting coal plants into nuclear sites and increasing public investment in sector technologies.
Alfa Laval extends its cooperation with EDF to supply heat exchangers for EPR2 projects across three nuclear sites, reinforcing its position in the French nuclear sector.
Hadron Energy formalises its regulatory plan with U.S. nuclear authorities ahead of its $1.2bn merger with GigCapital7, relying on early compliance to accelerate the commercial deployment of its microreactor.
The International Atomic Energy Agency denounces the ongoing inspection blockage at several damaged Iranian nuclear facilities, where stocks of highly enriched uranium remain.
Orano is testing an artificial intelligence-equipped robot for four months at its Melox site to assess its ability to assist in sensitive and repetitive industrial operations.
The UK’s Sizewell C project reaches a key milestone with a financing boost from EDF, including a loan guaranteed by Bpifrance and backing from the National Wealth Fund, with an estimated total cost of GBP38bn ($48.19bn).
NGE, through its subsidiary Sade, has won the contract for the cooling system networks (SEC) of six EPR2 reactors in France, a key project for nuclear safety and industrial innovation.
Constellation plans to increase the nuclear capacity of Calvert Cliffs in Maryland, with projects aimed at addressing the rising energy demand and supporting the state’s economic growth.
The UK's Office for Nuclear Regulation has granted formal consent to EDF Energy to decommission the Hinkley Point B nuclear power plant in Somerset, England, following its permanent shutdown in August 2022.

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