PRESS RELEASE

Strategic Partnership between METLEN and Tsakos Group for One of Greece's Largest Hybrid Power Generation Projects

Athens, Greece / London, United Kingdom - 22 January 2026 - METLEN and the Tsakos Group have signed a strategic partnership for the development, construction, operation (energy management), and commercial management of one of Greece's largest hybrid power generation projects.

Under the agreement, METLEN will participate in a joint venture (SPV) with the Tsakos Group (Tsakos Group 60% - METLEN 40%) to develop and operate a hybrid power plant from Renewable Energy Sources (RES) with integrated energy storage system consisting of a 251.9 MW photovoltaic park and an energy storage system with an expected capacity of 375 MWh, located in Central Greece. Implementation of the investment is expected to commence in 2026, with completion targeted for early 2028.

METLEN, through this investment, a) strengthens its strategic positioning in next-generation renewable energy by acquiring an equity stake, b) undertakes the construction, and c) integrates the management of the plant's commercial operations - a landmark project for Greece that combines large-scale energy generation and storage - into the company's Energy Management.

Strategic partnerships, such as the one with the Tsakos Group, alongside METLEN's extensive international experience in delivering complex hybrid projects, strengthen the company's position at the forefront of Greece's energy transition and its role in shaping the Utility of tomorrow.

Notes to editors:

Official photo material of METLEN and its activities can be found here.

For further information please contact:

Ms. Antigoni Fakou: METLEN Press Office, Tel. +30210-6877346 | Fax +30210-6877400 | E-mail: [email protected]

About METLEN:

METLEN Energy & Metals Plc (METLEN) is the parent company of the international industrial and energy group, a leader in the metallurgy and energy sectors, focused on sustainable growth and the circular economy. METLEN is a benchmark in competitive "green" metallurgy at both European and global level, operating the only fully integrated bauxite, alumina and primary aluminium production plant in the European Union, with privately owned port facilities. In the energy sector, the Company provides integrated solutions through the implementation of thermal and renewable power generation projects, electricity distribution and supply, as well as investments in network infrastructure, battery storage and other green technologies. METLEN operates across five continents and in more than 40 countries, employing over 9,000 people worldwide and applying a fully synergistic model across its metallurgy, energy and end-to-end energy project development activities.

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METLEN Financial Highlights

The Company has its primary listing on the London Stock Exchange and secondary listed on the Athens Stock Exchange, and is a constituent of the FTSE 100 Index. In 2024, METLEN reported consolidated revenue of €5.68 billion and EBITDA of €1.08 billion, up 7% year-on-year, with net profit of €615 million. Adjusted net debt stood at €1.78 billion, with a Net Debt/EBITDA ratio of 1.7x, reflecting strong financial resilience. METLEN is rated by leading international sustainability and ESG agencies, holding the unique Greek position in the Dow Jones Best-in-Class Emerging Market index, and distinguished across MSCI, Sustainalytics, ISS Quality score, ISS Corporate  Score, S&P Global ESG, LSEG, CDP, FTSE Russell, ESG Book, EcoVadis, Bloomberg and IdealRatings.

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For more information about Tsakos Group please contact:

Mr. Ioannis Saroglou: Press Office TSAKOS GROUP Tel. 210-9480700 | Fax 210-9406061 | E-mail: [email protected]

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