Croatia is preparing a major digital infrastructure project that could place the country among Europe’s most important data center locations. The planned facility, named “Pantheon,” is expected to be built in the municipality of Topusko, in Sisak-Moslavina County, and is already being described as one of the largest potential technology investments in the region.
According to the announced plans, the project could exceed €50 billion in value and would have a capacity of around 1 gigawatt. If completed, that scale would put Pantheon among the most powerful data centers in Europe, comparable to major digital hubs such as London, Frankfurt, Amsterdam, Dublin and Paris.
The project is linked to Croatian businessman Jako Andabak and a group of American institutional investors. The plan is expected to be presented internationally at the Three Seas Initiative summit in Dubrovnik, where it is likely to attract attention as a strategic investment for both Croatia and the wider region.
Construction could begin next year if the project proceeds according to schedule, while completion is projected for the beginning of 2029.
One of the most important elements of the plan is energy supply. A data center of this size would require enormous amounts of electricity, with estimated consumption similar to that of the city of Rijeka. For that reason, the project includes its own energy infrastructure, including a substation, around 280 kilometers of new transmission lines and a 500-megawatt solar power plant intended exclusively for the facility’s needs.
The aim is for Pantheon to operate independently from the public electricity grid and rely heavily on renewable energy sources. Water supply would also be organized as a separate system, using private wells and advanced cooling technology instead of relying on the local water network.
The facility is planned according to Tier 4 standards, the highest level for data center reliability, which means it would be designed for maximum security, stability and almost uninterrupted operation. Engineer Mislav Crnogorac, who has international experience including work with Amazon and has participated in the design of more than 50 data centers worldwide, is also mentioned in connection with the project.
If realized, Pantheon could significantly reshape Croatia’s role in Europe’s digital economy. Beyond its technological importance, the investment could create thousands of jobs, attract new companies and strengthen the country’s position as a regional hub for data, energy and advanced infrastructure.
