ATB Group

What ATB Group does

ATB Group S.p.A. is an Italian privately held industrial organization founded around 1900, headquartered in Roncadelle (Brescia), operating in over 100 countries with approximately 1,500 employees. The company is structured around three divisions: Heavy Equipment (HE), which designs and manufactures critical nuclear-industry components including transportation casks, steam generators, reactors, pressure vessels, and cryostat components for both fission and fusion applications under ASME Section III standards; Hydro Mechanical Equipment (HME), which delivers turnkey hydromechanical packages — gates, steel penstocks (up to 10m diameter), trashracks, valves, and turbines — for hydropower and pumped-storage projects; and Civil Construction & Industrial Services (CCIS), which provides industrial and civil construction, infrastructure works, and steel-plant management through the wholly owned SEMAT subsidiary. Manufacturing facilities are located in Roncadelle and Artogne (Italy) plus Medellín (Colombia), with a 3,500 sqm machining bay and lifting capacity exceeding 1,000 tons enabling fabrication of equipment weighing up to 1,700 tons and 50+ meters in length.

The company makes money through project-based, quote-priced, turnkey hardware supply contracts (heavy equipment and hydromechanical equipment) and construction/industrial-services contracts (CCIS). It sells directly to enterprise clients — utilities, government energy agencies, nuclear operators, EPC contractors, and large industrial operators — via a specialized direct-enterprise sales motion for each division, supplemented by industry trade-show engagement (World Nuclear Exhibition, HYDRO conferences, ICOLD, Big Science Business Forum) and an ATB Digital Magazine. Pricing is not publicly disclosed; contracts are individually scoped. Revenue sources are diversified across hydropower (BC Hydro Site C, Nachtigal in Cameroon, Koysha in Ethiopia, Ituango in Colombia, EPM), nuclear (Commonwealth Fusion Systems, EDF, Framatome, Terra Innovatum SOLO SMR), oil and gas (Thai Oil Sriracha, Pemex Dos Bocas), and steel-industry construction (ArcelorMittal Italia Taranto).

Recent strategic posture is anchored by the recapture of the ASME NPT Certificate of Authorization (January 2026), the achievement of ISO 19443 certification (June 2025, among the first in Italy), membership in the European Industrial Alliance on SMRs (April 2024), and the Terra Innovatum SOLO micro-modular reactor partnership (September 2025), all signaling a deliberate pivot into the nuclear renaissance alongside continued hydropower dominance.

Name

ATB Group

Legal name

ATB GROUP S.p.A.

Website

https://atb.group

Company type

Private

Founded year

1900

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

ATB Group is an Italian industrial firm with three divisions — Heavy Equipment for nuclear components, Hydro Mechanical Equipment for hydropower, and Civil Construction & Industrial Services — serving utilities, EPC contractors, and large operators across more than 100 countries with turnkey fabrication and installation of certified heavy steel and nuclear equipment.

Ownership category

akta.pro rank

Product category

Heavy Industrial Equipment Manufacturing

NAICS

Metal Tank (Heavy Gauge) Manufacturing (332420), Fabricated Pipe and Pipe Fitting Manufacturing (332996), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336)

SIC

Steel Pipe & Tubes (3317)

akta.pro primary industry

Modularization, Offsite Fabrication & Heavy Lift Logistics (EUAKAAAM)

akta.pro secondary industries

Containment, Civil Structures & Modular Construction Systems (EUAKADAJ), Spent Fuel Management Engineering, Consulting & Digital Tools (Thermal/Shielding/Criticality, QA) (EUAKAHAL)

Keywords

• Heavy steel fabrication
• Hydromechanical equipment
• Nuclear component manufacturing
• Hydropower penstock supply
• Industrial construction services

Headquarters

HQ city

Roncadelle

HQ country

Italy

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Heavy Equipment Manufacturing: Design, manufacture and support service for heavy equipment primarily in nuclear industries, including reactors, pressure vessels, transportation casks, and steam generators. Revenue generated from project-based equipment supply contracts, typically as turnkey deliveries.
2. Hydromechanical Equipment Turnkey Supply: Complete design, manufacturing, supply, installation and commissioning of penstocks and hydromechanical equipment for hydropower and pumped storage projects. Revenue from full equipment packages delivered as turnkey solutions.
3. Civil Construction and Industrial Services: Industrial and civil construction, design and construction of infrastructure works, and management of steel plants through SEMAT Costruzioni subsidiary. Revenue from construction contracts and industrial services.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

ATB Group designs, manufactures, supplies, installs and commissions heavy steel equipment and turnkey packages for the nuclear, hydropower and petrochemical industries, plus industrial/civil construction services. Core products include hydromechanical equipment (gates, penstocks, valves, trashracks) for hydropower dams, critical nuclear components (transportation casks, steam generators, cryostat parts for fusion reactors), and large pressure vessels for refineries.

Product overview

ATB Group is an Italian industrial organization operating in over 100 countries with approximately 1,500 employees and over 100 years of experience. The company operates through three main divisions: Heavy Equipment (HE) for nuclear industries, Hydro Mechanical Equipment (HME) for hydropower, and Civil Construction & Industrial Services (CCIS). HE Division provides critical nuclear components including transportation casks, reactors, steam generators, and cryostat components for fusion applications. HME Division delivers turn-key hydromechanical equipment packages for hydropower including gates, trashracks, valves, and steel penstocks. CCIS Division handles civil construction and industrial services through SEMAT subsidiary. These divisions work together on complex energy infrastructure projects worldwide, from nuclear facilities to pumped storage hydropower plants.

Differentiator

Problem solved

Functional benefit

Products and services

• Heavy Equipment (HE) Division — Nuclear and Petrochemical Components International leader in the design, manufacture, and support service for heavy equipment in the nuclear industries. Products include transportation casks, reactors, steam generators, and components for nuclear fission and fusion applications, plus large pressure vessels for refinery and petrochemical clients.
• Hydro Mechanical Equipment (HME) Division — Hydropower Packages Leading provider of design, manufacturing, supply, installation and commissioning of penstocks and hydromechanical equipment for hydropower projects. Turn-key supply includes gates, trashracks, valves, and steel penstocks for dams, hydropower plants and pumped storage projects.
• Civil Construction & Industrial Services (CCIS) Division Over thirty years of specialization in industrial and civil construction, design and construction of infrastructure works, and management of steel plants. Includes SEMAT subsidiary specializing in industrial construction and Sid subsidiary providing demolition services.
• New-Generation Transportation Casks for Spent Nuclear Fuel High-tech shielded metal containers suitable for transport of high activity nuclear fuel. New generation casks approximately 6 meters long, 2.5 meters in diameter, weighing approximately 100 tons, made with forged steel and copper structures, featuring helium leak testing.
• Mega Reactors for Petrochemical and Refinery Applications Heavy stage reactors for petrochemical and refinery applications. Made of vanadium-modified CrMo steel with diameters from 5.4 to 5.7 meters, weights from 880 to 1,700 tons, and lengths from 37 to 52 meters. Designed for hydrotreating and stage reactor duties in clean fuel projects.
• Steel Penstocks for Hydropower Projects Large-scale steel penstocks for hydropower projects, available in diameters up to 10 meters, supplied for major installations and turnkey hydropower packages worldwide.
• Hydraulic Gates for Hydropower Spillway radial gates, low-level outlet gates, power intake gates, and draft tube maintenance gates for hydropower applications. Includes anti-icing systems for operation in harsh winter conditions such as at the San Valentino Dam in Bolzano, Italy.
• Hydroelectric Turbines and Water-to-Wire Plants Complete water-to-wire supply including Pelton and Francis turbines, generators, auxiliary systems, automation systems, and electrical switchboards for small and medium hydropower plants.
• Nuclear Steam Generators Full-scale mock-up steam generators for nuclear applications. Example: a 315-ton unit with 4,476mm outside diameter and 21 meters length, manufactured for Framatome.
• Cryostat Components for Fusion Energy Machines High precision mechanical components for fusion energy machines. Includes cryostat bases manufactured from 20-ton stainless steel 316/316L, machined on vertical lathes with 11-meter maximum diameter capability.

Quantifiable outcome

• Nachtigal facility generates 2.9 TWh annually, covering 30% of Cameroon's energy needs
• +3 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• Terra InnovatumcoreStrategic or Co-development Partner · 10 September 2025Partnership to support SOLO micro-modular reactor commercialization. ATB Group contributes manufacturing expertise for the SOLO micro reactor, with deployment planned for 2027 and commercial operations expected to begin in 2028. Terra Innovatum Global secured $131 million for this business combination.
• Commonwealth Fusion SystemscoreStrategic or Co-development PartnerATB manufactured the cryostat base for the SPARC fusion energy machine. ATB team visited the SPARC complex in Devens, Massachusetts to observe successful installation of the cryostat base and tour the manufacturing facility.
• ICIMminorImplementation/ SI/ Consulting PartnerCertification partner for ISO 19443 nuclear quality management certification. ICIM conducted the certification process for ATB Riva Calzoni.
• WebuildminorStrategic or Co-development PartnerCivil general contractor collaboration on Koysha Hydropower Project in Ethiopia. ATB works alongside Webuild on installation activities for hydromechanical equipment.
• EDFcoreStrategic or Co-development PartnerMajor French energy company and key player in European nuclear sector. ATB participated in EDF European Nuclear Suppliers Days and collaborates on French nuclear supply chain development. Involved in Pizançon dam rehabilitation project for EDF.
• FramatomecoreStrategic or Co-development PartnerFrench nuclear equipment manufacturer. ATB completed steam generator mock-up fabrication and continues nuclear equipment supply partnership, strengthening cooperation on nuclear energy projects.
• Marine Divine SolutionsminorChannel Partner/ Reseller/ DistributorClient for Soo Gate Project in Sault Saint Marie, Michigan, USA. ATB welcomed US Army Corps of Engineers and Marine Divine Solutions delegation to present fabrication progress.
• MIDAD HoldingminorChannel Partner/ Reseller/ DistributorATB's representative partner for STATIC Arabia events in Saudi Arabia, hosting booth at exhibitions to represent ATB products.
• European Industrial Alliance on Small Modular ReactorscoreStrategic or Co-development PartnerATB is among the first members of the European Industrial Alliance on SMRs, established by the European Commission to accelerate development and deployment of small modular reactors in Europe.
• PonticelliFrèresminorStrategic or Co-development PartnerPartnership with PonticelliFrères on Pizançon Dam rehabilitation project in France for EDF's Dam Improvement initiative.
• AIN (Associazione Italiana Nucleare)coreStrategic or Co-development PartnerItalian Nuclear Association. ATB actively participates in AIN events, conferences, and bilateral meetings between Italian and French nuclear industries.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Broad incumbents

• Babcock & Wilcox: US-headquartered energy technology firm supplying nuclear steam generators, replacement components, and spent fuel handling equipment. Comparable to ATB in heavy nuclear fabrication and spent fuel cask adjacent capabilities.
• Hitachi Energy: Swiss-Japanese supplier of transformers, grid integration, and increasingly large hydro generator and electrical systems. Adjacent peer to ATB in hydro power plant electrification and auxiliary systems.
• GE Vernova: Spun-off GE energy business covering hydro turbines, generators, and grid equipment. Competes with ATB's Renewables/HME division on large hydro turbines and integrated water-to-wire packages.
• Westinghouse Electric Company: US-based nuclear reactor OEM with global fleet and active SMR (AP300) development. Comparable to ATB on nuclear island component supply and increasingly on SMR component manufacturing for emerging reactor programs.
• Mitsubishi Heavy Industries: Large Japanese industrial conglomerate with nuclear reactor and steam generator capabilities, as well as turbomachinery for power generation. Competes with ATB's Heavy Equipment division in nuclear components and with its Renewables division in turbines.

Direct peers

• Voith Hydro: German-headquartered manufacturer of large hydro turbines, generators, and associated hydro-mechanical equipment. Direct competitor to ATB HME in penstocks, gates, valves, and turbines for large and pumped-storage hydropower projects.
• Framatome: French nuclear reactor OEM and major fabricator of steam generators, reactor components, and fuel handling equipment. ATB is both a partner (steam generator mock-up) and a peer in nuclear island component manufacturing, making Framatome a closely comparable heavy nuclear fabricator.
• ANDRITZ: Austrian global supplier of hydro turbines, penstocks, gates, and electromechanical equipment for hydropower plants. Directly comparable to ATB's Hydro Mechanical Equipment division, competing on similar turnkey hydromechanical packages for projects like Koysha- and Ituango-scale dams.
• Impsa: Argentine manufacturer of hydro turbines, generators, gates, and hydromechanical equipment for medium-to-large hydropower projects. Direct competitor to ATB HME in Latin America and Africa on similar-scale hydro projects.

Emerging players

• Shanghai Electric: Chinese state-linked OEM supplying nuclear steam generators, conventional island equipment, and hydro turbines globally. Comparable to ATB in nuclear fabrication and heavy equipment for power generation, with growing international footprint in emerging markets.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/ATBholding
• Xx.com/ATB_group

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles13 records

Subsidiaries2 records

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 ATB Group