What Ansaldo Nucleare does

Ansaldo Nucleare S.p.A. is an Italian nuclear engineering company headquartered in Genoa, operating as a wholly-owned subsidiary of Ansaldo Energia S.p.A. with a UK engineering subsidiary (Ansaldo Nuclear Ltd, Wolverhampton). The company provides integrated Engineering, Procurement, and Construction (EPC) services across the full nuclear lifecycle, covering new builds (Generation III+ and IV), plant operation assistance and life extension, decommissioning and radioactive waste management, fusion reactor components, and specialized UK defence solutions. Its core technology stack spans CANDU, PWR, BWR, and VVER reactor types, with proprietary capabilities in Generation IV lead-cooled fast reactor (LFR) technology demonstrated through the ALFRED project and the EAGLES-300 SMR, plus the ATHENA 2.21 MW pool-type experimental facility in Romania and the Passive Heat Removal and Versatile Loop facilities in the UK. The company is a core member of the AMW consortium (with Westinghouse and Walter Tosto) manufacturing five of nine sectors of the ITER Vacuum Vessel, the largest fusion experiment under construction.

The company generates revenue primarily through large, multi-year EPC and EPCM contracts negotiated directly with government-owned nuclear utilities (notably SNN in Romania), research organizations (Fusion for Energy, UKAEA), and defence customers (UK Ministry of Defence and primes). It supplements project-based revenue with collaborative R&D funded through Euratom, EU industrial alliances, and national programs, plus bespoke defence hardware supply. Recent mega-contracts include the EUR 1.85 billion Cernavoda Unit 1 refurbishment (December 2024, with Candu Energy and KHNP) and the Cernavoda Units 3 & 4 EPCM award (November 2024, with Candu Energy, Fluor, and Sargent & Lundy), supported by an up to EUR 2 billion SACE financing facility. Go-to-market is project-based enterprise field sales, typically executed through consortia, with participation in competitive tenders and trade events such as the World Nuclear Exhibition and COP climate conferences.

Ansaldo Nucleare serves five primary customer segments: Nuclear Power Plant Operators and Owners (primary, including SNN, Krško, Embalse, Tianwan), Fusion Research Organizations (ITER/F4E, UKAEA STEP), Nuclear Decommissioning Programs (Sellafield), UK Defence Sector (UK MoD, Babcock, BAE Systems, AWE, Rolls-Royce), and Advanced Reactor Technology Programs (SMR and Gen IV R&D partners). The company maintains a 60+ year operating history, a 40+ year presence in Romania, and is positioned for the European nuclear renaissance with leadership in LFR/SMR development targeting commercial deployment around 2040.

Name

Ansaldo Nucleare

Legal name

Ansaldo Nucleare S.p.A.

Website

https://ansaldonucleare.com

Company type

Private

Operating status

Operating

Headcount range

101–250 employees

Short description

Ansaldo Nucleare S.p.A. is an Italian nuclear engineering firm (Genoa HQ, UK subsidiary) providing integrated EPC, plant life extension, decommissioning, fusion components, and Generation IV/SMR technology services to government-owned nuclear utilities, research organizations, and UK defence customers.

Ownership category

akta.pro rank

Product category

Nuclear Engineering & EPC Services

NAICS

Architectural, Engineering, and Related Services (5413), Scientific Research and Development Services (5417)

akta.pro primary industry

Nuclear Plant EPC & Construction (EUAEAAAC)

akta.pro secondary industries

Gen IV / Advanced Reactor Systems (SFR, LFR, GFR, MSR, HTGR, Microreactors) (EUAKADAC), Component & System Upgrades / Modernization (I&C Digital, Turbine-Generator, Balance-of-Plant) (EUAKABAE), Nuclear Plant Life Extension & Uprates (Long-Term Operations) (EUACADAI), Instrumentation & Control (I&C) Integration & Commissioning Support (EUAKAAAH), Construction Management, Supervision & Field Engineering (EUAKAAAJ)

Keywords

• Nuclear plant engineering
• Nuclear power EPC
• Nuclear decommissioning services
• Small modular reactors
• Fusion reactor components

Headquarters

HQ city

Genoa

HQ country

Italy

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Technology or R&D, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. EPC Contracts for Nuclear Plant Construction: Engineering, Procurement and Construction contracts for new nuclear builds and modifications to existing plants. Includes integrated design, supply of nuclear components, installation, and commissioning services.
2. Plant Operation Assistance Services: Ongoing engineering services to operational nuclear power plants including safety upgrades, refurbishment, modifications, and plant life extension programs.
3. Decommissioning and Waste Management: Decommissioning strategies, dismantling services, radioactive waste management systems, and end-of-life support for nuclear facilities.
4. Fusion Project Services: Engineering and manufacturing services for fusion reactor components and systems, including long-term research and development contracts.
5. Defence Sector Products and Services (UK): Bespoke solutions and services for UK defence industry including heat exchangers, specialist handling equipment, lifting equipment, and transport frames.
6. R&D and Technology Development: Collaborative R&D projects funded by Euratom, EU partnerships, and national programs for development of Generation IV reactors, SMRs, and advanced nuclear technologies.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

Ansaldo Nucleare is an Italian engineering company and EPC contractor that designs, engineers, manufactures, assembles, tests, commissions, and provides through-life support for nuclear power plants. It covers the full nuclear lifecycle — new builds, plant operation assistance and life extension, decommissioning and waste management, fusion reactor component manufacturing, advanced Generation IV lead-cooled fast reactor and small modular reactor (SMR) development, and specialized equipment for the UK defence sector.

Product overview

Ansaldo Nucleare operates as a one-stop-shop for nuclear power solutions, providing integrated EPC services across the complete nuclear plant lifecycle. The core offerings include Nuclear Plant EPC (engineering, procurement, construction), New Nuclear Builds (covering Generation III+ and Generation IV reactors), and Decommissioning & Waste Management. Specialized divisions cover Plant Operation Assistance (life extension, safety upgrades), Nuclear Fusion Solutions (ITER, DEMO), and UK Defence Services. The innovation portfolio centers on Generation IV Lead-Cooled Fast Reactor Technology (ALFRED project) and Small Modular Reactors (~300 MW capacity). Key experimental facilities include the ATHENA 2.21 MW plant for LFR testing and ITER Vacuum Vessel sector manufacturing. The company serves international markets including Italy, UK, France, Romania, Slovenia, and Argentina.

Differentiator

Problem solved

Functional benefit

Products and services

• Nuclear Plant EPC
• New Nuclear Builds
• Nuclear Fusion Solutions
• Plant Operation Assistance
• Defence Services
• Decommissioning & Waste Management
• Generation IV Lead-Cooled Fast Reactor (LFR) Technology
• Small Modular Reactor (SMR) Development
• New Decommissioning & Waste Management Solutions

Quantifiable outcome

• Cernavoda Unit 1 has delivered 133 million MWh over 27+ years, preventing 130 million tons of CO2 emissions
• +4 more outcomes

Named customers13 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature13 records

Partnerships

20 partnerships are on record, tiered core and major.

• Societatea Nationala Nuclearelectrica S.A. (SNN)coreChannel Partner/ Reseller/ Distributor · 23 April 2026Romanian state-owned nuclear energy company. Ansaldo Nucleare serves as EPC contractor for Cernavoda Unit 1 refurbishment and Units 3 and 4 expansion. 40+ year relationship.
• Fluor CorporationmajorStrategic or Co-development Partner · 1 November 2025Joint venture partner with Candu Energy, Ansaldo Nucleare, and Sargent & Lundy for EPCM services for Cernavoda Units 3 and 4 expansion. Contract signed at COP29 in Baku.
• Sargent & LundymajorStrategic or Co-development Partner · 1 November 2025Joint venture partner with Candu Energy, Fluor Corporation, and Ansaldo Nucleare for Cernavoda Units 3 and 4 EPCM contract.
• Candu Energy Inc. (AtkinsRéalis)coreStrategic or Co-development Partner · 19 December 2024Joint venture for Cernavoda Unit 1 Retubing and Refurbishment Project in Romania. Candu Energy is original equipment designer and manufacturer of CANDU technology. Ansaldo Nucleare leads engineering and procurement for Balance of Plant work while Candu leads Nuclear Steam Plant. EUR 1.85 billion project.
• Korea Hydro & Nuclear Power Co., Ltd. (KHNP)coreStrategic or Co-development Partner · 19 December 2024Tripartite consortium with Candu Energy and Ansaldo Nucleare for Cernavoda Unit 1 refurbishment. KHNP spearheads construction phase including radioactive waste storage infrastructure, bringing experience from completing its own retubing project.
• ENEA (Italian National Agency for New Technologies, Energy and Sustainable Economic Development)coreStrategic or Co-development Partner · 1 October 2024FALCON consortium partner for ALFRED Generation IV lead-cooled fast reactor development. ENEA brings widespread experience in lead technology development. Project selected by European Industrial Alliance on SMRs.
• RATEN (Romanian Authority for Nuclear Research)coreStrategic or Co-development Partner · 1 October 2024FALCON consortium partner for ALFRED reactor development. RATEN brings extensive expertise in lead technology. Romania hosting ALFRED demonstrator at Pitești.
• WebuildmajorStrategic or Co-development Partner · 5 August 2024MoU for five-year collaboration on SMR and AMR development, marketing and implementation. Combining complementary expertise for nuclear technology deployment. Webuild brings global track record of 313 dams and hydroelectric plants.
• EdisonmajorStrategic or Co-development Partner · 22 July 2024MoU partner exploring co-investment opportunities in SMR construction for Italian steel industry decarbonization. Leveraging interconnector capacity between Italy and France for nuclear energy supply.
• FederacciaimajorStrategic or Co-development Partner · 22 July 2024MoU partner representing Italian steel companies for SMR-based decarbonization. Exploring co-investment opportunities and medium-long term nuclear energy supply contracts.
• EnelmajorStrategic or Co-development Partner · 1 March 2024Collaboration agreement for R&D on SMRs and AMRs, examining new technologies and business models for nuclear energy generation. Both companies part of Italy's National Platform for Sustainable Nuclear Power (PNNS).
• Westinghouse Electric CompanycoreStrategic or Co-development Partner · 1 January 2024AMW consortium partner (Ansaldo Nucleare, Westinghouse, Walter Tosto) for ITER Vacuum Vessel manufacturing. Partner in Generation IV LFR technology development. Joint testing facilities operational at Wolverhampton for lead-cooled fast reactor technology.
• Walter TostomajorStrategic or Co-development Partner · 1 January 2024AMW consortium partner with Ansaldo Nucleare and Westinghouse for ITER Vacuum Vessel sectors 2 and 3 manufacturing at facility in Chieti, Italy.
• Fusion for Energy (F4E)coreStrategic or Co-development Partner · 1 January 2024Client organization managing Europe's contribution to ITER (nearly half of the project). Collaboration on Vacuum Vessel sector manufacturing and ITER Remote Handling activities under framework contract won in 2020.
• SCK CEN (Belgian Nuclear Research Centre)coreStrategic or Co-development Partner · 8 November 2023MoU partner for SMR deployment alongside ENEA, RATEN, and Westinghouse. SCK CEN leading LEANDREA technology demonstrator project in Mol, Belgium (EAGLES-300). Global leader in lead-bismuth research through MYRRHA project.
• newcleocoreStrategic or Co-development Partner · 8 November 2023French developer collaborating on LEANDREA project for lead-cooled SMR technology demonstrator (EAGLES-300). Partnership aims to establish lead-cooled fast reactor technology as part of European energy supply.
• EDFmajorStrategic or Co-development Partner · 1 November 2023Cooperation agreement for new nuclear development in Europe including SMR technologies and EPR1200 mid-size reactors. Ansaldo Nucleare positioned as key partner in design and supplier of special systems and components.
• NUWARDmajorStrategic or Co-development Partner · 1 November 2023Part of cooperation agreement with EDF and Ansaldo Energia for development of new nuclear in Europe, focusing on NUWARD SMR technology.
• Italian Nuclear Association (AIN)majorStrategic or Co-development Partner · 1 October 2023Collaboration agreement with EDF and GIFEN for Franco-Italian cooperation on innovative nuclear solutions (EPR2, NUWARD). Also supports Italian-Romanian relations through ROMATOM partnership.
• GIFEN (Groupement des Industriels Français de l'Energie Nucléaire)majorStrategic or Co-development Partner · 1 October 2023French nuclear industry association partner in collaboration agreement with AIN and EDF for integrated supply chain development to support new nuclear projects.

Scale indicators16 records

Recent moves8 records

Expansion highlights6 records

Direct peers

• AtkinsRéalis (Candu Energy): AtkinsRéalis, through its Candu Energy division, is the OEM for CANDU reactor technology and the lead consortium partner with Ansaldo Nucleare on the Cernavoda Unit 1 refurbishment. Both companies provide nuclear plant life extension and refurbishment services across similar customer segments.
• Fluor Corporation: Fluor is a major EPC contractor partnering with Ansaldo Nucleare on the Cernavoda Units 3 and 4 expansion EPCM contract. It serves similar utility clients and has deep nuclear project execution capability across new builds and life extension programs.
• KHNP (Korea Hydro & Nuclear Power): KHNP is the Korean state-owned nuclear utility and EPC contractor spearheading the Cernavoda Unit 1 refurbishment construction phase. It brings direct retubing experience and competes globally in nuclear new build projects, making it a close peer in nuclear plant construction.
• Sargent & Lundy: Sargent & Lundy is a US-based engineering and EPC services firm with extensive nuclear power plant design and modification experience. It is a consortium partner with Ansaldo Nucleare on Cernavoda Units 3 and 4 and competes for similar transmission and plant upgrade contracts.
• Framatome: Framatome is a France-based nuclear reactor services and fuel supplier offering EPC, component manufacturing, and instrumentation across the nuclear lifecycle. It competes with Ansaldo Nucleare for European utility clients and is part of the broader EDF supply chain ecosystem.
• Holtec International: Holtec International is a US-based nuclear equipment manufacturer and decommissioning services provider with overlapping capabilities in nuclear waste management, spent fuel storage systems, and decommissioning—segments where Ansaldo Nucleare is also active.
• Westinghouse Electric Company: Westinghouse is a global leader in nuclear plant EPC and reactor technology (AP1000) and is a direct consortium partner with Ansaldo Nucleare on ITER Vacuum Vessel manufacturing and Gen IV LFR development. Both companies serve overlapping utility customers and operate across the nuclear plant lifecycle.

Broad incumbents

• GE Hitachi Nuclear Energy: GE Hitachi is a global nuclear reactor OEM and services provider (BWR technology, ESBWR, PRISM sodium-cooled fast reactor). It serves overlapping utility customers and competes in both reactor design and plant services markets relevant to Ansaldo Nucleare.
• EDF (Électricité de France): EDF is Europe's largest nuclear utility operator and a partner with Ansaldo Nucleare on EPR2 and NUWARD SMR development. As a vertically integrated operator and technology developer, EDF is both a customer and competitor in the nuclear EPC space.

Emerging players

• newcleo: newcleo is a France-based lead-cooled fast reactor SMR developer and direct consortium partner with Ansaldo Nucleare on the LEANDREA/EAGLES-300 technology demonstrator. Both companies are jointly advancing lead-bismuth and lead-cooled SMR technology for European deployment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ansaldo Nucleare