Urenco Group

Urenco Group is a multinational company specializing in uranium enrichment for civil nuclear power and related nuclear-fuel applications. Headquartered in London, it operates enrichment facilities in the United Kingdom, the Netherlands, Germany, and the United States, and supplies enriched uranium services to nuclear power producers in approximately 15 countries. Its core technology is gas centrifuge enrichment, a process that increases the proportion of the uranium-235 isotope in uranium feed material so that it can be used as fuel in commercial reactors. The company was established in 1971 under the Treaty of Almelo, a trilateral agreement involving the United Kingdom, the Netherlands, and West Germany. The treaty created a framework for cooperation in uranium-enrichment technology while placing restrictions on the transfer and sale of ownership interests. Urenco's ownership remains divided into three equal blocks: Enrichment Holdings Ltd, associated with the UK government; Ultra-Centrifuge Nederland NV, owned by the Dutch government; and Uranit GmbH, owned equally by German energy companies E.ON and RWE. This structure gives the company a distinctive position between a state-linked strategic enterprise and a commercial supplier to the international nuclear industry. Urenco's principal operating subsidiaries are Urenco UK, Urenco Nederland, and Urenco Deutschland. Their major enrichment sites are located at Capenhurst in Cheshire, England; Almelo in the Netherlands; and Gronau in North Rhine-Westphalia, Germany. In the United States, the company operates through Louisiana Energy Services and its Urenco USA facility near Eunice, New Mexico. The US plant, originally known as the National Enrichment Facility, became operational in 2010 and extended Urenco's production presence into the North American market. The group also has a technology-related interest in Enrichment Technology Company, jointly owned with Areva, now associated with the French nuclear sector. ETC provides centrifuge technology and engineering services for enrichment plants and has activities connected with facilities in the United Kingdom, Germany, the Netherlands, France, and the United States. During the 1990s, Urenco diversified beyond fuel-cycle services by establishing Urenco Isotopes in the Netherlands to produce stable isotopes for medical, industrial, and research uses. Urenco has historically focused on low-enriched uranium, generally enriched to no more than 5 percent uranium-235 for conventional reactor fuel. Its stated global enrichment-market share was about 29 percent in 2011. More recently, the company has pursued capacity expansion and advanced-fuel opportunities as governments and utilities respond to renewed interest in nuclear power, reactor life extensions, and efforts to reduce dependence on Russian nuclear-fuel services after Russia's 2022 invasion of Ukraine. The company began producing LEU+ enriched to as much as 10 percent uranium-235 in 2025 and is developing a high-assay low-enriched uranium facility at Capenhurst for fuel containing up to 20 percent uranium-235. Urenco therefore occupies a strategic position in the international nuclear-fuel supply chain, although its history also includes controversy over technology-security breaches, uranium sourcing, and the handling and transport of depleted uranium materials.

Urenco Group was created in 1971 through the Treaty of Almelo, which established cooperation among the United Kingdom, the Netherlands, and West Germany in the development and use of uranium gas-centrifuge enrichment. The treaty also imposed controls on ownership transfers and the dissemination of sensitive enrichment capabilities. The resulting company became one of the principal Western suppliers of enrichment services for civil nuclear power. The company's early development was closely connected with the wider history of centrifuge technology. In the 1970s, Abdul Qadeer Khan, a Pakistani metallurgist working for a subcontractor associated with Urenco in Almelo, obtained confidential centrifuge engineering information. He transferred the material to Pakistan and later became a leading figure in Pakistan's uranium-enrichment program. The episode became one of the most consequential nuclear-proliferation controversies associated with the commercial enrichment industry and contributed to heightened attention to the protection and international transfer of centrifuge technology. Urenco expanded its operating network through facilities in the Netherlands, the United Kingdom, and Germany. Urenco Nederland developed the Almelo site, Urenco UK operated the Capenhurst site in England, and Urenco Deutschland operated the Gronau facility in Westphalia. These sites became the core of the company's European enrichment system. In the 1990s, Urenco broadened its activities by establishing Urenco Isotopes in the Netherlands, which produced stable isotopes for medical, industrial, and scientific research uses. The group later expanded into the United States. Through Louisiana Energy Services, Urenco developed the National Enrichment Facility near Eunice, New Mexico. The facility became operational in spring 2010 and subsequently operated as Urenco USA, giving the company a domestic production base in the United States as well as a marketing presence in the country. Urenco also retained a 50 percent interest in Enrichment Technology Company, a joint venture with Areva. ETC supplied plant-design expertise and gas-centrifuge technology through activities in several European countries and the United States. Urenco's ownership has remained unusual among large nuclear-fuel companies. One-third is held through a vehicle owned by the Dutch government, one-third through a UK government-linked holding company, and the remaining third through Uranit GmbH, which is owned equally by E.ON and RWE. This arrangement reflects the strategic importance of enrichment while preserving participation by commercial German utilities. The company has also faced disputes over the origin and treatment of uranium materials. In 1985, the United Nations Council for Namibia brought legal action concerning Urenco's use of uranium from the Rössing mine in Namibia during the period when the territory was administered by apartheid South Africa. The case concerned an alleged breach of a UN decree restricting exploitation of Namibian natural resources. Proceedings were delayed amid disagreement over whether the origin of specific uranium consignments could be established, and the Dutch government supported Urenco's position that it had not known the precise source of the material. Another controversy concerned contracts involving Russia and depleted uranium hexafluoride. Greenpeace described the arrangements as radioactive-waste disposal contracts, while industry accounts characterized them as sales of depleted uranium tails for re-enrichment, with Russia retaining the waste generated by processing. Public protests took place in March 2009 over the movement of a large shipment from Germany to Seversk in Siberia. In the 2020s, Urenco began planning major capacity additions in response to increased demand for nuclear power, reactor life extensions, and efforts by European and US utilities to diversify nuclear-fuel supplies after Russia's invasion of Ukraine. Plans described for the Almelo facility would add 1.5 million separative work units per year by 2030, while the US facility was planned for an additional 2.8 million SWU per year by 2036. At Capenhurst, Urenco is developing the Advanced Fuels Facility, intended to produce HALEU for advanced reactors. The UK government committed £196 million to the project; construction was planned to begin in 2028, with initial capacity of up to 27 tonnes of HALEU per year and potential expansion depending on demand. Urenco began LEU+ production in 2025 and signed its first commercial HALEU contract the same year. Separately, Urenco Netherlands dismantled the SP3 enrichment plant after earlier decommissioning of SP1 and SP2.

• 2025

  Urenco starts LEU+ production and signs a HALEU contract

  [1]Urenco Groupen.wikipedia.org

  Urenco begins producing LEU+ enriched to as much as 10 percent uranium-235 and signs its first commercial contract for HALEU supply to Generation IV reactors.

• 2025

  Advanced-fuels infrastructure work begins at Capenhurst

  [1]Urenco Groupen.wikipedia.org

  Costain is contracted to upgrade infrastructure and conduct design work for the proposed Urenco UK Advanced Fuels Facility.

• 2011

  Urenco reports a substantial global enrichment share

  [1]Urenco Groupen.wikipedia.org

  The company states that it held approximately 29 percent of the global uranium-enrichment services market.

• 2010

  Urenco USA becomes operational

  [1]Urenco Groupen.wikipedia.org

  The National Enrichment Facility near Eunice, New Mexico, begins operation through Louisiana Energy Services.

• 2009

  Protests occur over transport of depleted uranium material to Russia

  [1]Urenco Groupen.wikipedia.org

  A large shipment of depleted uranium hexafluoride travels from Germany to Seversk, prompting public protests and debate over whether the arrangement concerns waste disposal or re-enrichment.

• 1990

  Urenco diversifies into stable isotopes

  [1]Urenco Groupen.wikipedia.org

  Urenco establishes Urenco Isotopes in the Netherlands to serve medical, industrial, and research applications.

• 1980

  Urenco begins enriching uranium associated with Namibian supply

  [1]Urenco Groupen.wikipedia.org

  Urenco is reported to have enriched uranium from the Rössing mine in Namibia, later prompting legal action by the United Nations Council for Namibia.

• 1971

  Urenco is established under the Treaty of Almelo

  [1]Urenco Groupen.wikipedia.org

  The United Kingdom, the Netherlands, and West Germany establish a multinational framework for uranium-enrichment cooperation and centrifuge technology.

• 1970

  Centrifuge technology information is obtained from the Almelo network

  [1]Urenco Groupen.wikipedia.org

  Abdul Qadeer Khan, working for a subcontractor connected with Urenco in the Netherlands, acquires confidential centrifuge information that is later transferred to Pakistan.

A state-linked, multinational specialist in centrifuge-based uranium enrichment and nuclear-fuel supply, serving utilities and advanced-reactor developers across major civil nuclear markets.

• Nuclear fuel material

  Low-enriched uranium

  Urenco's principal commercial output is enriched uranium for civil nuclear reactors. Its enrichment plants increase the concentration of uranium-235 in uranium feed material, historically producing low-enriched uranium at concentrations of up to approximately 5 percent uranium-235 for conventional reactor fuel. Urenco generally supplies enrichment services and separative work rather than finished reactor fuel assemblies, with downstream fuel fabrication handled by other parts of the nuclear-fuel industry.

• Advanced nuclear fuel material · 2025

  LEU+

  LEU+ is a higher-assay form of low-enriched uranium enriched to as much as 10 percent uranium-235. It is intended to support reactor-fuel designs and operating strategies that can benefit from a higher enrichment level than the traditional low-enriched uranium limit. Urenco began producing LEU+ in 2025 as part of its move toward advanced-fuel products.

• Advanced nuclear fuel material

  HALEU

  Urenco is developing high-assay low-enriched uranium production for advanced and Generation IV reactors. The planned Capenhurst Advanced Fuels Facility is intended to enrich uranium to as much as 20 percent uranium-235. The project was planned with initial production capacity of up to 27 tonnes per year, with possible expansion depending on market demand, and is designed to support reactor concepts requiring fuel above conventional enrichment levels but below weapons-grade concentrations.

• Isotope products

  Stable isotopes

  Through Urenco Isotopes in the Netherlands, the group has diversified into stable isotopes for medical, industrial, and research applications. These products extend Urenco's expertise in isotope separation beyond the enrichment of uranium for reactor fuel.

• Nuclear technology services

  Centrifuge technology and enrichment engineering

  Through its interest in Enrichment Technology Company, Urenco participates in the provision of gas-centrifuge technology, enrichment-plant design, and related engineering capabilities. ETC has operated through subsidiaries and facilities associated with the United Kingdom, Germany, the Netherlands, France, and the United States.

• 2009

  Controversy over depleted uranium shipments to Russia

  Greenpeace criticized Urenco's arrangements with Russia as radioactive-waste disposal. Industry accounts described them instead as sales of depleted uranium tails for re-enrichment, under which Russia retained the waste produced by the process. The transport of a major shipment from Germany to Seversk generated public protests.

  Source

• 1985

  United Nations legal action over Namibian uranium

  The United Nations Council for Namibia initiated legal proceedings alleging that Urenco had breached a UN decree by using uranium originating from the Rössing mine while Namibia was under South African administration. Urenco and the Dutch government disputed the ability to identify the precise origin of particular consignments and argued that the relevant circumstances did not establish the alleged breach.

  Source

• 1970

  Abdul Qadeer Khan centrifuge-technology theft

  Abdul Qadeer Khan obtained confidential gas-centrifuge drawings while working for a subcontractor associated with Urenco in Almelo and transferred them to Pakistan. The information became important to Pakistan's uranium-enrichment program and exposed the proliferation risks surrounding the international movement of sensitive enrichment expertise.

  Source

Read more

• 2025

  Move into LEU+ and HALEUProduct launch

  Background

  Interest in advanced reactors and efforts to diversify nuclear-fuel supply increased demand for enrichment levels above those traditionally used in conventional reactor fuel.

  Action taken

  Urenco began producing LEU+ and signed its first commercial HALEU supply contract, while advancing plans for a HALEU facility at Capenhurst.

  Aftermath

  The company positioned itself to serve advanced-reactor developers as well as the established light-water-reactor fuel market.

  Source

• 2020

  Plan substantial enrichment-capacity expansionStrategy

  Background

  New nuclear construction, reactor life extensions, and Western efforts to reduce dependence on Russian nuclear-fuel services increased expected demand for non-Russian enrichment capacity.

  Action taken

  Urenco planned additions of approximately 1.5 million SWU per year at Almelo by 2030 and 2.8 million SWU per year at its US facility by 2036.

  Aftermath

  The plans signaled a long-term expansion of Urenco's European and North American production footprint, although the cited source does not provide a final completion status.

  Source

• 2010

  Enter the US enrichment-production marketStrategy

  Background

  Urenco pursued a production presence in the United States in addition to its established European facilities.

  Action taken

  Louisiana Energy Services brought the National Enrichment Facility near Eunice, New Mexico, into operation; it became known as Urenco USA.

  Aftermath

  Urenco gained a significant North American operating base and expanded geographic coverage of its enrichment network.

  Source

• 1990

  Diversify into stable-isotope productionStrategy

  Background

  Urenco sought to apply its isotope-separation capabilities beyond uranium enrichment for power-reactor fuel.

  Action taken

  The group established Urenco Isotopes in the Netherlands to produce stable isotopes for medical, industrial, and research uses.

  Aftermath

  The move broadened Urenco's nuclear-technology portfolio beyond its core enrichment-services business.

  Source

• 1971

  Create a multinational centrifuge-enrichment companyStrategy

  Background

  The United Kingdom, the Netherlands, and West Germany sought to cooperate on uranium enrichment while retaining governmental control over strategic technology and ownership.

  Action taken

  The parties established Urenco under the Treaty of Almelo, with ownership and technology-transfer restrictions embedded in the governance framework.

  Aftermath

  Urenco developed into a major Western supplier of uranium-enrichment services and retained a state-linked ownership structure.

  Source

1. 1Urenco Groupen.wikipedia.org