Westinghouse Electric Company supplies nuclear technology and services spanning new plants, operating-plant services, nuclear fuel and advanced reactors. Its principal reactor offerings include the AP1000 Generation III+ pressurized-water reactor, the AP300 330-MWe SMR based on AP1000 technology, and the eVinci microreactor. On 4 August 2026, Westinghouse and Amentum announced agreements to expand delivery capacity for AP1000 fleet deployment and to advance AP300 development and U.S. Nuclear Regulatory Commission licensing. On September 30, 2026 the US and South Korea announced a non-binding Framework for the Deployment of Nuclear Power under which Korea would invest US$120 billion to help finance the buildout of Westinghouse reactor technology in the US, covering up to eight large reactors (six AP1000s and up to two Korean APR1400 units built on Westinghouse technology) on federal sites, beginning with two AP1000s. It contemplates a one-time waiver of Westinghouse's 2025 settlement with KEPCO and KHNP, with compensation of about US$2 billion of value per APR1400 through IP licensing, engineering and procurement services, subcontracting and long-term fuel fabrication supply, and a potential Korean equity investment in Westinghouse, which Cameco does not expect to affect its ownership interest (Korean officials have spoken of a stake of 5-10%). The framework builds on the October 2025 partnership between Cameco, Brookfield and the US Department of Commerce and is separate from the DOE American Nuclear Supply Chain Loans commitment; it is subject to definitive agreements, site selection, approvals and financing.
Korea Hydro & Nuclear Power is a South Korean power-generation company that develops and operates nuclear assets and pursues overseas energy projects. Its nuclear fleet and development expertise include the APR1400, a 1,400-MW pressurized-water reactor used at Saeul Units 3 and 4. On 20 January 2026, TerraPower announced that KHNP had joined its investor base through SK's investment, with the companies planning commercialization cooperation for the Natrium advanced-reactor programme. Under the US-Korea Framework for the Deployment of Nuclear Power announced on September 30, 2026, up to two KHNP APR1400 reactors could be built in the US on federal sites under a one-time waiver of the 2025 Westinghouse settlement that had barred Korean reactors from the US market; the framework is non-binding and subject to definitive agreements.
Paragon Energy Solutions, a Mirion Technologies company, is a leading supplier of safety-related products and components for the nuclear industry. The company produces the Highly Integrated Protection System (HIPS) platform used in digital instrumentation and control systems for nuclear reactors. Paragon has delivered comprehensive solutions for nuclear industry needs for more than three decades.
TerraPower UK Ltd is a new subsidiary formed by TerraPower to serve as the company's operational base for all UK activities including generic design assessment engagement. This is TerraPower's first office outside the United States.
Advanced reactor company that achieved criticality with its Mark-0 microreactor on June 4, 2026 at Idaho National Laboratory. First privately developed non-light-water reactor to reach criticality in the US in over 40 years. Part of DOE Reactor Pilot Program. Antares is developing a compact HTGR microreactor selected for both the DOE Reactor Pilot Program (targeting July 4, 2026 criticality at INL) and the DoD Advanced Nuclear Power for Installations programme (April 2025); the dual civilian DOE and military DoD programme support positions it as one of the most broadly backed US microreactor developers, and it targets military base energy security and remote industrial applications. (Founded in 2023, confirmed by ANS Nuclear News and NEI Magazine in June 2026; an earlier record said 2020.)
Nordic Baseload Power is a Swedish energy company that submitted an application for state aid to build two full-scale boiling water reactors generating 2,500 MWe at Barseback in southern Sweden.
NuScale Power Corporation develops and commercializes advanced small modular reactor nuclear technology for electric-power and industrial applications. Its NuScale Power Module is a 77 MWe/250 MWt pressurized-water reactor that can be deployed in configurations of up to 12 modules. In August 2026, NuScale reported continued work toward an ENTRA1–TVA power-purchase agreement, progress on the six-module RoPower project in Romania, and a Paragon final-design contract for its safety-related Highly Integrated Protection System.
Rolls-Royce SMR develops standardized, factory-built small modular nuclear power stations. Its design is a three-loop, close-coupled pressurized-water reactor producing 1,358 MWt of heat, with a boron-free primary circuit and multiple safety, redundancy and backup systems. On 13 April 2026, Rolls-Royce SMR and Great British Energy–Nuclear signed a contract to begin site-specific design, regulatory engagement, planning and critical-component procurement for three units at Wylfa in North Wales.
GE Vernova, through the GE Vernova Hitachi Nuclear Energy alliance, provides advanced reactor designs, nuclear fuel and nuclear lifecycle services. Its small modular reactor focus is the BWRX-300, a simplified boiling-water reactor designed for up to 300 MW of electricity and using passive safety features, commercially available fuel and modular construction techniques. On 13 August 2026, GE Vernova Hitachi and Blue Energy agreed to advance engineering design, licensing and safety analysis for a planned 2.5-GW gas-plus-nuclear project in Victoria, Texas, subject to a 2027 final investment decision.
Elementl Power is a U.S. advanced-nuclear project developer that develops, finances, and delivers utility-scale next-generation nuclear plants from site selection through commercial operation. The platform is technology agnostic, although its Southeast Ohio project has selected GE Vernova Hitachi's BWRX-300 small modular reactor under an Early Works Agreement. In April 2026, Elementl filed a PJM transmission interconnection request for the first 600 MW of its potential up-to-1.5-GW Meigs County project.
Akkuyu Nuclear JSC is the project company established by Rosatom to build, own, and operate Turkey's first nuclear power plant at Akkuyu under a Build-Own-Operate model. The plant will comprise four VVER-1200 reactors with a total capacity of 4800 MWe.
South Africa-based Allweld Nuclear and Industrial is an engineering solutions company serving the nuclear sector since the early 1960s. The company signed an MOU with Deep Geo Inc to support construction, operation and maintenance of nuclear projects in Africa.
Atomstroyexport, engineering division of Rosatom. General designer and general contractor for Kudankulam NPP Units 3-6 in India. Director of Projects in India is Mikhail Novikov.
Blue Bird Energy is a Bulgarian company focused on deploying small modular reactors. It signed a Letter of Intent with Poland's Synthos Green Energy in January 2026 for a joint venture to build up to six BWRX-300 SMRs in Bulgaria.
TerraPower develops advanced nuclear-energy and isotope technologies for carbon-free electricity, industrial decarbonization and medical applications. Its Natrium system combines a 345-MWe sodium-cooled fast reactor with molten-salt energy storage that can increase output to 500 MWe. On 4 March 2026, TerraPower announced that the U.S. Nuclear Regulatory Commission had voted to issue a construction permit for Kemmerer Unit 1 in Wyoming, its Natrium project and the first commercial-scale advanced nuclear plant to receive such a permit.
Rosatom State Atomic Energy Corporation provides integrated nuclear-energy offerings that include plant design and construction, fuel supply, operations and maintenance, spent-fuel and radioactive-waste management, and decommissioning. Its portfolio includes Generation III+ VVER plants and land-based and floating SMR solutions built around the water-cooled RITM-200N reactor. In June 2026, construction began on Uzbekistan's first integrated nuclear power plant after the regulator issued a construction licence for an RITM-200N unit; the planned project comprises two VVER-1000 units and two 55-MWe RITM-200N units.
Terrestrial Energy develops small modular nuclear plants for dispatchable, carbon-free industrial heat and electricity. Its Generation IV Integral Molten Salt Reactor uses molten-fluoride salt as coolant and fuel, standard-assay low-enriched uranium, and a sealed, replaceable reactor core unit. On 12 May 2026, the company announced that the U.S. Nuclear Regulatory Commission issued a Safety Evaluation Report approving its IMSR Postulated Initiating Events Topical Report, a further foundational element of the reactor's licensing basis.
Oklo Inc. is developing fast-fission power plants, advanced nuclear-fuel recycling and fabrication capabilities, and critical-radioisotope businesses. Its Aurora technology uses liquid-metal-cooled, metal-fuelled fast reactors designed for passive, self-stabilizing operation and potential use of recycled fuel. On 11 June 2026, the U.S. Department of Energy's Idaho Operations Office approved the Preliminary Documented Safety Analysis for Aurora-INL under the Reactor Pilot Program, advancing preliminary safety review for Oklo's first planned fast-fission plant.
Holtec International is a nuclear-energy technology company specializing in spent-fuel storage, small modular reactors and nuclear-plant decommissioning. Its principal advanced-reactor design is the SMR-300, a pressurized-water SMR rated at approximately 1,000 MWth and more than 320 MWe net per unit, with passive-safety features and an 80-year design life. On 17 February 2026, the U.S. Nuclear Regulatory Commission accepted Holtec SMR, LLC's Limited Work Authorization application for two SMR-300 Pioneer units at the Palisades Energy Center, initiating formal review. In September 2026, Holtec's IPO entity, Holtec Nuclear Corp, filed to raise up to $900 million on Nasdaq (50 million shares at $15-18 each) but suspended the offering on September 16, citing market conditions shortly before its expected pricing date.
Newcleo develops advanced modular reactors and an integrated nuclear-fuel business covering reactor design, research and development, engineering, procurement and construction services, and MOX-fuel manufacturing. Its technology focus is Generation IV lead-cooled fast reactors using mixed-oxide fuel made from reprocessed nuclear materials, with the stated objective of closing the fuel cycle and reducing waste liabilities. On 10 August 2026, Newcleo and NewHold Investment Corp. III announced in an SEC-filed release that the SEC had declared effective Newcleo's Form F-4 registration statement for their proposed business combination and Nasdaq listing, subject to shareholder approval and customary closing conditions. Newcleo operates in 7 countries with over 900 employees and 31 patent families and generated approximately $80 million in revenue in 2024. Key projects include a joint venture with JAVYS for up to four LFR-AS-200 reactors in Slovakia, the PRECURSOR demonstrator in Italy, and a demonstration LFR-AS-30 reactor planned for Chinon, France by 2031. Its planned SPAC merger values the company at $2.4 billion pre-money, with listing expected in the second half of 2026.
Framatome designs and supplies nuclear power-plant equipment, nuclear steam supply systems, fuel, instrumentation and control systems, and lifecycle services. Its advanced-reactor work includes fuel and component design and manufacturing, engineering, licensing and prospective operations and maintenance across reactor technologies including SMRs. On 23 July 2026, Framatome announced that the U.S. Nuclear Regulatory Commission approved a licence amendment for its Richland, Washington, fuel facility to manufacture fuel enriched up to 10%, expanding domestic advanced-reactor fuel-manufacturing capacity.
Blykalla is a Swedish advanced-reactor developer commercializing its Swedish Advanced Lead Reactor, or SEALER, platform. Its technology focus is compact, passively safe lead-cooled reactors, including the 55-MW SEALER-55, enabled by proprietary aluminium-alloyed steels intended to resist liquid-lead corrosion. On 18 May 2026, Blykalla announced that it had applied to the Swedish government to develop a six-reactor advanced nuclear park at Norrsundet with planned capacity of approximately 330 MW. Blykalla's SEALER is a 55 MWe passively safe lead-cooled fast reactor based on more than 25 years of research at KTH Royal Institute of Technology, and the OECD NEA's annual SMR dashboard identifies Blykalla as having the most mature advanced reactor concept in Europe. Blykalla raised $50 million in December 2025, co-led by Oklo, Norrsken Launcher and Armada Investment; in September 2025 Oklo committed $5 million to co-lead the round and the two companies signed a Joint Technology Development Agreement. Blykalla broke ground on a non-nuclear testing site at Oskarshamn in February 2025 and received EUR 15 million of EU EIC Accelerator equity plus a EUR 2.5 million grant. Industrial partners include Uniper, KSB and ABB. (Founded in 2013 as a KTH spin-off, per the company's own profile and Swedish company data; an earlier record said 2019.)
Subsidiary of CNNC that jointly developed the Chaotan One supercritical CO2 waste-heat power generation technology. Core technical institute for China's nuclear power development.
Zeno Power develops radioisotope power systems (RPSs) for use in extreme environments including undersea and space applications. The company is restoring hot cell infrastructure at Vallecitos Nuclear Center for production of strontium-90-fueled nuclear batteries.
Container Technologies Industries is a Tennessee-based nuclear steel manufacturer that received DOE funding in May 2026 to expand its nuclear quality assurance certifications enabling production of steel for Gen III+ SMR deployments. CTI's location in Helenwood, Tennessee positions it within the emerging nuclear manufacturing corridor anchored by TVA's Clinch River BWRX-300 project in nearby Oak Ridge. QA-certified nuclear steel is a critical but often overlooked supply chain component. Container Technologies Industries received $547,900 from DOE on May 14, 2026 to expand nuclear quality assurance certifications at its Helenwood, Tennessee facility, which is in Scott County close to TVA's Clinch River BWRX-300 project site, to produce steel qualified for Gen III+ SMR deployments. Nuclear-grade steel requires ASME NQA-1 programme certification, a significant compliance burden for smaller manufacturers, and expanding the certified domestic steel supplier pool reduces supply chain risk and cost for US SMR projects. Another record lists the website https://www.containertechnologies.com. (Founding year unverified: records disagreed on 1985 vs 2000 and CB Insights lists 1999; no primary source was found.)