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Atomstroyexport

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Russian nuclear power equipment exporter and nuclear power plant engineering and construction company.

Last updated August 22, 2026

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Overview

Atomstroyexport, commonly abbreviated as ASE, is a Russian nuclear engineering and export company focused on the international delivery, construction, and servicing of nuclear power plants. It is a wholly owned subsidiary of Rosatom and operates within Rosatom's Engineering Division, the part of the state nuclear corporation responsible for nuclear power plant engineering, equipment supply, project execution, and export activity. The company's principal technology platform is the VVER family of pressurized-water reactors. Depending on the project, Atomstroyexport's responsibilities can include arranging reactor technology, supplying nuclear and conventional equipment, integrating plant systems, coordinating engineering and construction, and supporting commissioning and long-term project delivery. Its work is generally conducted through large intergovernmental or utility-level projects rather than through a consumer-facing product business. Atomstroyexport's international activity developed from the Soviet and Russian nuclear sector's earlier research-reactor and power-reactor exports. Historical projects associated with the broader organization include research-reactor work in China and Czechoslovakia, followed by major commercial power projects in China, Iran, India, and other countries. Its best-known overseas assignments include the Tianwan Nuclear Power Plant in China, the Bushehr nuclear power project in Iran, and the Kudankulam project in India. These projects have involved different combinations of reactor supply, equipment delivery, construction management, and cooperation with local utilities or national nuclear organizations. The company has also pursued prospective projects in countries including Turkey, Bangladesh, Morocco, and the United Kingdom. Some of these initiatives remained at the proposal, memorandum, or feasibility stage rather than reaching construction. Its proposed role in Bulgaria's Belene project was approved in 2006 but the Bulgarian government withdrew from the project in 2012 after questions about its viability and financing. Atomstroyexport has expanded beyond new-build reactor exports through cooperation with other Russian power-sector companies and through the acquisition of Nukem Technologies in 2009. The Nukem transaction added capabilities in nuclear decommissioning, radioactive-waste management, and related engineering services. This broadened the company's potential offering from reactor construction to parts of the nuclear asset life cycle. As a Rosatom subsidiary, Atomstroyexport is closely connected with other organizations in the Russian nuclear group. Atomenergoprom is associated with Rosatom's civilian nuclear industrial structure, Atomenergomash supplies nuclear equipment, and Rosenergoatom operates Russian nuclear power plants. Atomstroyexport's position is therefore best understood as that of an engineering, procurement, export, and project-delivery brand inside an integrated state nuclear-industrial system.

History

Atomstroyexport belongs to the Russian nuclear export tradition that developed during the Soviet period and later became part of Rosatom's integrated civilian nuclear business. The historical record associated with the organization describes early international work on research reactors and nuclear research infrastructure. In 1958, a research reactor was built and launched in China at the Institute of Nuclear Physics. Subsequent work in Lanzhou included a physical institute and equipment such as a U-150 accelerator and a cyclotron. The organization also participated in the construction of the VVR-S research reactor at Řež in Czechoslovakia, now in the Czech Republic. These activities established an early pattern of exporting reactor-related technology, equipment, and engineering expertise. The company's later business became centered on commercial nuclear power plants, particularly projects based on the VVER pressurized-water reactor family. Its work generally combines technology export with engineering coordination, equipment supply, construction management, and support for commissioning. The structure of these assignments varies by country: some involve a complete plant delivery, while others involve the supply of reactor technology, major components, or individual systems in cooperation with a local owner and national nuclear organizations. One of the company's major international projects was the Tianwan Nuclear Power Plant in China. Between 1999 and 2007, Atomstroyexport constructed the first two units, each described in the reference material as having 1,060 megawatts of capacity. The parties also signed an agreement covering additional units, making Tianwan an important example of continuing Russian-Chinese nuclear cooperation rather than a single isolated export transaction. In Iran, Atomstroyexport was responsible for construction of the first reactor unit at the Bushehr nuclear power plant under a contract signed in 1995 and described as having a value of approximately US$1 billion. The Bushehr project was one of the company's most prominent overseas assignments and demonstrated the long duration and complex international coordination typical of nuclear plant construction. India became another major market through the Kudankulam Nuclear Power Plant. Atomstroyexport supplied technology, equipment, components, and individual systems for six VVER-1000 reactors, with a combined installed capacity stated in the reference material as 6,000 megawatts. The project was undertaken in collaboration with India's Nuclear Power Corporation of India Limited, illustrating the company's model of pairing Russian reactor supply with a national utility or public-sector nuclear partner. During the 2000s, Atomstroyexport also sought to broaden its geographic pipeline. In 2007 it signed a memorandum with Ciner Insaat Ticaret ve Sanayi to promote VVER pressurized-water reactors in Turkey. It prepared proposals connected with the possible revival of Bangladesh's Rooppur nuclear power plant and considered potential participation in Morocco's proposed Sidi Boulbra plant. The company also indicated that it might work with a Western manufacturer on a future United Kingdom nuclear project. These initiatives show the breadth of its export ambitions, although the reference material does not establish that all of them progressed to construction. The Belene project in Bulgaria became a significant but unsuccessful development. In October 2006, the company's offer to construct two VVER-1000/V-446B units was approved, with the first unit originally expected to enter operation in 2013 and the second in 2014. On 28 March 2012, however, the Bulgarian government announced its withdrawal. The stated reasons included a negative assessment of the plant's viability and the lack of another major European or American investor. The episode illustrates how financing, political approval, and investor participation can be as decisive as reactor technology in determining whether a nuclear export project proceeds. Atomstroyexport also expanded its business scope through corporate cooperation and acquisition. In February 2008 it signed a cooperation agreement with Technopromexport covering power-project construction and management in Russia and international markets. In December 2009 it acquired Nukem Technologies for €23.5 million, adding expertise in nuclear decommissioning, waste management, and engineering. This move extended the company's potential role beyond new-build projects toward services associated with the later stages of the nuclear facility life cycle. Within the contemporary Rosatom structure, Atomstroyexport operates alongside related organizations rather than as an independent, diversified energy conglomerate. It is described as a wholly owned Rosatom subsidiary and part of the corporation's Engineering Division, while Atomenergoprom is associated with the wider civilian nuclear structure. Atomenergomash is a related nuclear equipment manufacturer, and Rosenergoatom is Rosatom's nuclear power plant operating company. Alexander Lokshin, a former Rosenergoatom chief executive and later Rosatom first deputy chief executive for operations management, has been associated with the wider Atomstroyexport group, although the supplied material does not establish a specific Atomstroyexport executive position for him.

  • 2012

    Bulgaria exits Belene project

    [1]

    The Bulgarian government announced its withdrawal from the Belene project.

  • 2009

    Nukem Technologies acquisition

    [1]

    Atomstroyexport acquired Nukem Technologies, expanding into nuclear decommissioning, waste management, and associated engineering.

  • 2008

    Cooperation with Technopromexport

    [1]

    Atomstroyexport and Technopromexport agreed to cooperate on power-project construction and management in Russia and abroad.

  • 2007

    Turkish VVER cooperation memorandum

    [1]

    The company signed a memorandum with Ciner Insaat Ticaret ve Sanayi to promote VVER pressurized-water reactors in Turkey.

  • 2006

    Belene offer approved

    [1]

    Bulgaria approved Atomstroyexport's proposal for two VVER-1000/V-446B units at the Belene nuclear power plant.

  • 1999

    Tianwan construction begins

    [1]

    Construction associated with the first two Tianwan nuclear power plant units in China began during the 1999–2007 project period.

  • 1995

    Bushehr contract signed

    [1]

    Atomstroyexport entered into the contract for construction of the first reactor unit at Iran's Bushehr nuclear power plant.

  • 1960

    VVR-S research reactor at Řež

    [1]

    The organization constructed a VVR-S research reactor at Řež in Czechoslovakia, now the Czech Republic.

  • 1959

    Research infrastructure developed in Lanzhou

    [1]

    A physical institute and associated accelerator and cyclotron equipment were developed in Lanzhou, extending the organization's early cooperation in Chinese nuclear research.

  • 1958

    Research-reactor work in China

    [1]

    A research reactor was built and launched in China at the Institute of Nuclear Physics, representing an early international nuclear-technology activity associated with the organization's historical export work.

Products and positioning

International nuclear power plant engineering, equipment supply, and construction contractor within the Rosatom state nuclear group.

  • Nuclear power technology

    VVER reactor-based nuclear power plants

    VVER pressurized-water reactors are Atomstroyexport's principal export technology. The company participates in projects by supplying reactor technology and associated equipment and by coordinating engineering, construction, plant systems, and commissioning. The reference material identifies the VVER family as the company's flagship product and describes deployments in China, Iran, India, and proposed projects in several other markets.

  • Engineering and construction services

    Nuclear power plant export and construction services

    Atomstroyexport delivers large-scale nuclear plant projects through combinations of engineering, procurement, equipment supply, system integration, construction management, and commissioning support. The scope is project-specific and is often performed with national nuclear utilities, government bodies, and local industrial partners.

  • Nuclear lifecycle services · 2009

    Nuclear decommissioning and waste-management services

    Following the acquisition of Nukem Technologies in 2009, Atomstroyexport added capabilities connected with nuclear facility decommissioning, radioactive-waste management, and related engineering. These services broaden the company's offering beyond construction of new reactors and into later stages of nuclear asset management.

Brand decisions

  • 2009

    Acquisition of Nukem TechnologiesM&A

    Background

    Atomstroyexport sought to extend its portfolio beyond new nuclear power plant construction.

    Action taken

    The company acquired Nukem Technologies for €23.5 million, adding decommissioning, waste-management, and nuclear engineering capabilities.

    Aftermath

    The transaction expanded Atomstroyexport's potential participation in nuclear facilities' decommissioning and waste-management stages.

    Acquisition price. €23.5 million (2009 acquisition)

  • 2008

    Cooperation with TechnopromexportStrategy

    Background

    Atomstroyexport aimed to combine its nuclear power capabilities with a Russian exporter focused on other forms of large-scale power generation.

    Action taken

    It signed an agreement with Technopromexport covering cooperation in the construction and management of power projects in Russia and international markets.

    Aftermath

    The agreement broadened the potential scope of collaboration across power infrastructure, although the supplied material does not identify specific completed projects resulting from it.

  • 2007

    Promotion of VVER reactors in TurkeyStrategy

    Background

    Atomstroyexport sought to expand the international market for Russian pressurized-water reactor technology.

    Action taken

    The company signed a memorandum of understanding with Ciner Insaat Ticaret ve Sanayi to promote VVER reactor projects in Turkey.

    Aftermath

    The supplied material records the memorandum but does not establish that it resulted in a completed plant contract.

  • 2006

    Pursuit of the Belene nuclear power plant contractOther

    Background

    Bulgaria sought to advance the Belene nuclear power plant using VVER technology. Atomstroyexport submitted a proposal for two VVER-1000/V-446B units.

    Action taken

    The Bulgarian authorities approved Atomstroyexport's offer, with the first and second units initially projected for operation in 2013 and 2014 respectively.

    Aftermath

    The project did not proceed as planned. Bulgaria announced its withdrawal in 2012, citing concerns about viability and the absence of another major European or American investor.

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