May 04, 2026 | Posted by Abdul-Rahman Oladimeji
US investment group Pantheon Atlas has unveiled plans for a hyperscale AI data center and innovation campus in Topusko, Croatia, with investment of up to €12 billion ($14.1 billion). The proposed 310-acre site will be located around 90km (56 miles) south of Zagreb, with potential to expand to 450 acres. Pantheon says the campus could deliver up to 1GW of total capacity, including around 800MW of usable IT load, built to Nvidia’s Gigawatt Scale AI Factory standards.
Pantheon Atlas said the project will be powered entirely by renewable energy, anchored by an on-site 500MW solar plant and 8,000MWh of battery storage. KKR-owned Greenvolt International Power is set to develop the solar and storage systems. The development is also expected to support the integration of up to 5.2GW of renewable energy into Croatia’s national grid via four independent 400kV transmission lines.
Jako Andabak, Pantheon AI’s founding partner, said: “Pantheon AI is a signal to the world that Croatia is open for the highest-caliber investment. 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 of Pantheon AI, 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. “We have lined up the power, fiber, regulatory stability, and institutional support to solve that problem in Europe, and we will establish Croatia and Central Europe as a premier destination for world-class digital infrastructure.”
