Cenergy Holdings S.A.

Regulatory Filings • Jul 22, 2025

PRESS RELEASE

Brussels, July 22, 2025

Corinth Pipeworks is awarded supply contract for Greece – North Macedonia natural gas interconnector

Cenergy Holdings announces that Corinth Pipeworks, its steel pipes segment, is participating in in the Greece–North Macedonia Natural Gas Interconnector, a milestone project that strengthens regional energy security, enhances cross-border connectivity, and supports the transition to a low-carbon energy future.

The project, jointly developed by DESFA (Greece) and NOMAGAS JSC (North Macedonia), entails the construction of a 123km, 55km in Greece (previously awarded to Corinth Pipeworks) and 68km in North Macedonia, linking the national natural gas transmission systems of the two countries. This strategic interconnection will enable North Macedonia to diversify its energy sources, reducing dependency on a single supplier, while securing access to Greece's advanced natural gas transmission network and LNG infrastructure.

Following the successful execution of the Greek section, Corinth Pipeworks has now also been awarded the supply of 28" Helical Submerged Arc Welded (HSAW) linepipe for the North Macedonian section of the pipeline by Rapid Bild DOO. All pipes are certified for hydrogen transportation in accordance with ASME B31.12 – Option B, ensuring future readiness for clean energy integration.

"We are shaping the future of hydrogen infrastructure," said Ilias Bekiros General Manager, Corinth Pipeworks. "This project represents not only an important cross-border collaboration but also a strong step toward decarbonization and energy resilience in Southeast Europe."

The Greece–North Macedonia Interconnector is expected to be operational in the first half of 2027. Adding to the significance of the project, a successful ceremony marking the start of construction works took place on 9 July 2025, underscoring the commitment of all stakeholders to deliver a reliable and future-ready energy corridor.

With this award, Corinth Pipeworks reinforces its role as a key enabler of strategic energy infrastructure in Europe and a trusted supplier of high-quality, hydrogen-certified linepipe solutions.

About DESFA

The Hellenic Gas Transmission System Operator (DESFA) S.A. is responsible for the operation, management, use and development of the Hellenic Natural Gas System. Possessing extensive experience and having highly skilled personnel, DESFA is a reliable partner in the framework of the ongoing international energy projects in Southeastern Europe, and beyond. DESFA is the enabler of a sustainable energy future, accelerating Greece's energy transition towards a decarbonized economy. For additional information, please visit www.desfa.gr

About NOMAGAS JSC

NOMAGAS AD Skopje is the state-owned company responsible for the transmission and system operation of natural gas in the Republic of North Macedonia. As the national transmission system operator, NOMAGAS plays a key role in the implementation of the Greece–North Macedonia Interconnector – a strategic project that will enable source diversification, enhance supply security, and integrate the country into the wider European gas network. For additional information, please visit nomagas.com.mk

About RAPID BILD

RAPID BILD is a leading construction contractor in North Macedonia, specializing in strategic infrastructure and energy projects. As the main contractor for the North Macedonian section of the Greece–North Macedonia Interconnector, RAPID BILD plays a key role in the project's execution, delivering high-quality and timely construction in accordance with the highest technical and safety standards. With extensive experience and expertise, the company actively contributes to regional energy connectivity and sustainable development. For additional information, please visit wp.rapidbild.com.mk

About Cenergy Holdings

Cenergy Holdings is a Belgian holding company listed on both Euronext Brussels and Athens Stock Exchange, investing in leading industrial companies, focusing on the growing global demand of energy transfer, renewables and data transmission. The Cenergy Holdings portfolio consists of Corinth Pipeworks and Hellenic Cables, companies positioned at the forefront of their respective high growth sectors. Hellenic Cables is one of the largest cable producers in Europe, manufacturing power and telecom cables as well as submarine cables. Corinth Pipeworks is a world leader in steel pipe manufacturing for the energy sector and major producer of steel hollow sections for the construction sector. For more information, please visit our website at www.cenergyholdings.com