A new supercomputer has been launched by the European Union in Greece.

The EuroHPC Joint Undertaking (EuroHPC JU) and GRNET this month inaugurated the Daedalus supercomputer.

Located at the Lavrion Technological Cultural Park, which is part of the National Technical University in Athens, the cluster offers 85.69 petaflops of sustained performance and 115 peak petaflops.

Built by Hewlett Packard Enterprise (HPE), the system features more than 2,000 Nvidia H200 Grace Hopper Superchips and uses direct liquid cooling.

First announced in 2022 and put to tender in July 2024, Daedalus appeared on the June 2026 Top500 list of most powerful supercomputers, securing 31st place, as well as 23rd place in the Green500 ranking of the most energy-efficient systems.

Daedalus was installed in a new 6.3MW data center located within the 1,500 sqm (16,145 sq ft) building of the park's former Power Station. A 2MW photovoltaic array operates at the Lavrion park for self-consumption, helping to cover the facility’s energy needs.

Prime Minister Kyriakos Mitsotakis said: “Greece’s journey in technology, from lagging behind to being at the forefront, particularly in the field of Artificial Intelligence, has indeed been and continues to be extremely exciting. I would like to thank everyone who worked to make this project a reality.

"I can see the emotion in many people’s eyes, because I know how hard you all worked in order for us to reach this point today, where, as a country, we have one of the world’s most powerful supercomputers, while at the same time having it installed in a building of such great historical and cultural significance.”

The €36 million ($40.3m) project was co-funded by the EuroHPC JU (35 percent) and the National Recovery and Resilience Plan ‘Greece 2.0’ (the remaining 65 percent), the latter of which is financed by the European Union – NextGenerationEU.

GRNET operates under the auspices of Greece’s Ministry of Digital Governance and contributes to the country’s digital transformation strategy. It also operates multiple data centers, including one near Filippiada and another at the University of Crete in Heraklion on the island of Crete. Another is housed within the National Documentation Center of Greece.

EuroHPC JU is a joint initiative between the EU, 35 European countries, and private partners to develop a supercomputing ecosystem in Europe.

Launched in 2018 and headquartered in Luxembourg, its mission is to develop, deploy, extend, and maintain a secure and connected supercomputing and quantum computing ecosystem, while supporting the development of key HPC skills for European science and industry.

The EuroHPC JU has already procured 12 supercomputers, distributed across Europe, with dozens more systems in development or planning.