Pantheon Atlas LLC, a transatlantic investment group, has announced plans to build a hyperscale AI data center and innovation campus called Pantheon AI in Topusko, Croatia. The project is designed to meet NVIDIA GW-Scale AI factory standards and is expected to bring €50 billion (US$ 54 billion) in total investment to Croatia.
According to a press release, the campus is intended to address Europe’s shortage of large-scale data center capacity, driven by rising demand for AI infrastructure and limited access to power, land, and grid connections. The facility will deliver availability above Tier IV standards, which is among the highest reliability levels in the industry.
The Pantheon Atlas project will enable up to 5.2 GW of renewable energy integration into Croatia’s electricity grid. It also described the campus as the largest investment in Croatian history and one of the largest U.S. linked private investments in Europe.
Jako Andabak, Founding Partner, Pantheon, said, “This project is the culmination of years of work to bring world-class digital infrastructure to Croatia, and we have assembled the deep local expertise, grid relationships, and regulatory groundwork required to meet demand for data center capacity.”
Ryan Rich, Managing Partner, PantheonAI, said, “We have assembled a transatlantic partnership to solve one of the most pressing challenges in global digital infrastructure enabling hyperscale operators to meet AI-driven demand at scale, and we will establish Croatia and Central Europe as a premier destination for world-class digital infrastructure.”
Joshua Volz, Special Envoy for Global Energy Integration, U.S. Department of Energy, said, “The race to lead in artificial intelligence is global, and we are pleased to see American capital and investment expertise like Pantheon AI anchoring that leadership in allied, democratic nations, Critical infrastructure of this scale, built by the private sector responding to real market demand, is exactly how US interests and European security advance together.”
Construction is scheduled to begin in early 2027, with full operations expected by the first quarter of 2029 for hyperscale tenants to deploy equipment at scale.
Europe’s main data center hubs currently have vacancy rates below 8 percent, with long delays in securing grid connections. Demand in Central and Eastern Europe is projected to grow three to four times by 2035, while large-scale AI-optimised facilities remain limited. EU data sovereignty rules are also pushing more data storage inside the bloc.