Metlen Energy & Metals
Metlen Energy & Metals is a Greek industrial group operating across energy and metallurgy, with activities in renewable power, engineering, bauxite, alumina and gallium.
Last updated August 26, 2026
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Overview
Metlen Energy & Metals is a Greek industrial and energy group whose activities are organized around two principal sectors: Energy and Metallurgy. The company was established in 1990 when Evangelos Mytilineos brought together businesses associated with his family’s metallurgy interests under the name Mytilineos Holdings. Its early development focused on acquiring and consolidating mining and metals assets, including copper, zinc and lead mines in Europe. The company became publicly traded on the Athens Exchange in 1995, providing a capital-market base for subsequent expansion. A major diversification step came in 1998 with the acquisition of Metka, a substantial construction and engineering business. This transaction broadened the group beyond mining and metals and gave it capabilities that later supported work in power generation, infrastructure and engineering, procurement and construction. During the early 2000s, the group expanded into the energy sector, eventually developing a business that included power-related projects and the engineering and construction of renewable-energy facilities. The Energy sector includes renewable-energy development and project delivery. In 2015, the company announced engineering, procurement and construction contracts for renewable-energy projects in the United Kingdom. At that time, its renewable portfolio was reported to contain 85 projects, comprising 58 solar projects and 27 battery-energy-storage projects. This portfolio illustrates the group’s role not only as an asset owner or operator but also as an engineering and project-construction provider. The Metallurgy sector is centered on the bauxite-to-alumina value chain and the development of additional critical-materials capacity. In January 2025, the company announced a €295.5 million investment intended to increase bauxite and alumina production and introduce industrial-scale gallium production in Europe. The planned expansion was described as targeting approximately 2 million tonnes of annual bauxite production, 1.265 million tonnes of annual alumina production, and 50 metric tonnes of annual gallium production. The investment is positioned as both a production-expansion program and a strategic effort to strengthen European supplies of materials used in industrial and technology applications. To support raw-material security and downstream sales, Metlen entered into long-term arrangements with Rio Tinto. One agreement concerns the supply of approximately 14.9 million tonnes of bauxite from Rio Tinto’s CBG mine in Guinea over an 11-year period from 2027 to 2037. A second arrangement concerns alumina offtake, under which Metlen is to supply Rio Tinto with 3.9 million tonnes of alumina from the expanded Agios Nikolaos refinery over eight years beginning in 2027. In June 2024, the company adopted the Metlen Energy & Metals name and refreshed its corporate identity. The rebrand signaled an effort to present the energy and metallurgy activities as a unified international industrial platform rather than as a company identified primarily with the Mytilineos family name. In August 2025, its primary listing was transferred from the Athens Exchange to the London Stock Exchange, where the company became a constituent of the FTSE 100 Index. The move further emphasized its international capital-markets orientation. Metlen’s current identity therefore combines a Greek industrial origin with a broader international operating and investor profile, spanning renewable energy, engineering, power-related activities, mining, refining and critical materials.
History
Metlen Energy & Metals traces its origins to 1990, when Evangelos Mytilineos consolidated his family’s metallurgy businesses into Mytilineos Holdings in Greece. The group’s first phase was associated with metals and mining. During the early 1990s it acquired copper, zinc and lead mines in Europe, building an asset base beyond its original domestic focus. It entered public markets in 1995 through a listing on the Athens Exchange. The acquisition of Metka in 1998 was a significant structural turning point. Metka brought construction and engineering capabilities into the group, enabling it to pursue projects beyond the extraction and processing of metals. In the early 2000s, the company expanded into energy. Over time, the combination of industrial engineering, construction and energy activities became a central part of its business model. Renewable energy became an important area of activity. In May 2015, the company announced engineering, procurement and construction contracts for renewable projects in the United Kingdom. Its reported renewable portfolio at that point consisted of 85 projects: 58 solar projects and 27 battery-energy-storage projects. The portfolio demonstrated the group’s ability to participate in the energy transition through project development and delivery as well as through traditional industrial operations. The metallurgy business remained a core pillar. In January 2025, Metlen announced a €295.5 million program to strengthen production of bauxite, alumina and gallium. The plan was described as increasing annual bauxite output to about 2 million tonnes and alumina output to 1,265,000 tonnes, compared with a previously stated alumina capacity of 865,000 tonnes. It also introduced a target of 50 metric tonnes of annual gallium production, presented as the first industrial production of gallium in Europe. The group also pursued supply-chain arrangements with Rio Tinto. A bauxite agreement covers approximately 14.9 million tonnes from the CBG mine in Guinea between 2027 and 2037. An alumina offtake agreement covers 3.9 million tonnes of alumina from the expanded Agios Nikolaos refinery over eight years from 2027. These arrangements connect Metlen’s European refining and materials platform with an external source of raw material and a long-term industrial customer. In June 2024, the company changed its name from Mytilineos Energy & Metals to Metlen Energy & Metals and updated its corporate identity. The new name places equal emphasis on the energy and metals businesses and supports the presentation of the group as a global industrial platform. In August 2025, Metlen moved its primary listing from the Athens Exchange to the London Stock Exchange and joined the FTSE 100 Index. This completed a significant shift in its public-market profile while preserving its Greek industrial roots.
- 2025
Critical-materials investment
[1]Metlen announced a €295.5 million investment to expand bauxite and alumina capacity and introduce industrial gallium production.
- 2025
Primary listing moves to London
[1]The company transferred its primary listing from the Athens Exchange to the London Stock Exchange and became part of the FTSE 100 Index.
- 2024
Corporate rebrand to Metlen Energy & Metals
[1]The company adopted the Metlen Energy & Metals name and refreshed its corporate identity.
- 2015
United Kingdom renewable-energy portfolio
[1]Metlen announced renewable-energy engineering, procurement and construction contracts in the United Kingdom and reported a portfolio of 85 projects.
- 2000
Expansion into energy
[1]The company expanded into the energy sector during the early 2000s.
- 1998
Acquisition of Metka
[1]The group acquired the construction and engineering company Metka, broadening its industrial capabilities.
- 1995
Athens Exchange listing
[1]The company became listed on the Athens Exchange.
- 1990
Mytilineos Holdings is established
[1]Evangelos Mytilineos consolidated his family’s metallurgy businesses in Greece under the Mytilineos Holdings name.
- 1990
Expansion into European mining
[1]The group acquired copper, zinc and lead mines in Europe during the early 1990s.
Products and positioning
An internationally oriented Greek industrial group combining energy infrastructure and renewable-energy capabilities with an integrated metallurgy and critical-materials platform.
Energy
Renewable-energy projects
Metlen develops and delivers renewable-energy projects, including solar installations. Its activities include engineering, procurement and construction, allowing it to participate in projects as an industrial contractor and energy-sector developer. A 2015 company portfolio referenced 58 solar projects within a broader group of 85 renewable-energy projects.
Energy
Battery-energy-storage projects
Battery-energy-storage systems form part of Metlen’s renewable and energy-transition portfolio. The company reported 27 battery-storage projects in its portfolio in 2015, reflecting its involvement in infrastructure designed to support variable renewable generation and power-system flexibility.
Metallurgy
Bauxite
Bauxite is a core raw material in Metlen’s metallurgy activities. The company’s 2025 expansion plan targeted annual bauxite production of approximately 2 million tonnes and was supported by a long-term supply arrangement involving Rio Tinto’s CBG mine in Guinea.
Metallurgy
Alumina
Alumina production is part of Metlen’s integrated metals platform and is linked to its Agios Nikolaos refinery. The 2025 investment program targeted annual alumina output of 1,265,000 tonnes, compared with a previously stated level of 865,000 tonnes.
Critical materials · 2025
Gallium
Gallium is a planned addition to Metlen’s industrial materials portfolio. The company’s 2025 expansion announcement targeted annual production of 50 metric tonnes and described the project as the first industrial-scale gallium production in Europe.
Industrial services · 1998
Engineering, procurement and construction services
Through capabilities strengthened by the 1998 acquisition of Metka, Metlen provides engineering, procurement and construction expertise for energy and industrial projects. These capabilities support renewable-energy delivery and the group’s broader infrastructure and power-related activities.
Brand decisions
2025
Expansion of bauxite, alumina and gallium productionStrategyBackground
Metlen sought to increase production capacity in its metals platform and add gallium to its European critical-materials offering.
Action taken
The company announced a €295.5 million investment targeting approximately 2 million tonnes of annual bauxite production, 1,265,000 tonnes of annual alumina production and 50 metric tonnes of annual gallium production.
Aftermath
The program is intended to expand the Agios Nikolaos refinery and establish industrial gallium production in Europe.
Investment. €295.5 million (Announced January 2025)
2025
Long-term raw-material and alumina arrangements with Rio TintoStrategyBackground
The planned expansion increased the importance of securing bauxite inputs and long-term outlets for alumina.
Action taken
Metlen agreed to receive approximately 14.9 million tonnes of bauxite from the CBG mine in Guinea from 2027 to 2037 and to supply Rio Tinto with 3.9 million tonnes of alumina from the expanded Agios Nikolaos refinery over eight years beginning in 2027.
Aftermath
The arrangements connect Metlen’s European refining operations with a long-term external raw-material source and alumina customer.
2025
Transfer of primary listing to LondonOtherBackground
Following its rebrand and international expansion, the company pursued a larger international public-market profile.
Action taken
In August 2025, Metlen transferred its primary listing from the Athens Exchange to the London Stock Exchange.
Aftermath
The company became a constituent of the FTSE 100 Index.
2024
Adoption of the Metlen Energy & Metals brandStrategyBackground
The company had developed substantial activities in both energy and metallurgy and sought a corporate identity reflecting both sectors and its international orientation.
Action taken
In June 2024, it changed its name from Mytilineos Energy & Metals to Metlen Energy & Metals and updated its corporate identity.
Aftermath
The rebrand positioned the company as a unified international energy-and-metals group rather than an organization identified primarily by the Mytilineos name.
Recent events
- 2025
Metlen announces €295.5 million metals expansion[1]
Other · Product generation
The company announced an investment to expand bauxite and alumina production and begin industrial gallium production in Europe.
- 2025
Metlen signs long-term bauxite and alumina arrangements with Rio Tinto[1]
Other · M&A
Two long-term arrangements were announced covering bauxite supply from Guinea and alumina offtake from the expanded Agios Nikolaos refinery.
- 2025
Metlen transfers its primary listing to London[1]
Other
The company transferred its primary listing from the Athens Exchange to the London Stock Exchange and became a constituent of the FTSE 100 Index.
- 2024
Mytilineos adopts the Metlen Energy & Metals identity[1]
Other · Leadership change
The company rebranded and introduced an updated corporate identity focused on its energy and metallurgy businesses.
Sources2 sources
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