Pantheon AI Topusko
Status: Announced / Permitting | Location: Zagreb
Project Overview
The Pantheon AI Topusko Mega-Campus represents a historic shift in the European digital landscape and marks one of the continent’s most ambitious technology investments to date. Announced on April 29, 2026, the €50 billion project is far more than a traditional data center development; it is envisioned as a fully integrated energy-and-compute ecosystem built to power the next generation of artificial intelligence. By selecting Topusko, Croatia, the developers are leveraging the region’s abundant land availability, competitive operating environment, and strategic geographic position at the crossroads of Western and Southeastern Europe. This location offers strong connectivity to major European markets while opening new opportunities for regional economic growth, infrastructure modernisation, and technology leadership. The campus is being purpose-built to support “GW-Scale AI Factories,” massive computing environments capable of handling the extraordinary processing needs of organisations training multi-trillion-parameter AI models. Such systems require unprecedented levels of electricity, cooling efficiency, network speed, and resilient operations, making integrated infrastructure essential. Beyond computing power, the project is expected to stimulate investment in renewable energy, grid upgrades, high-skilled employment, and advanced research partnerships across Europe. As demand for sovereign AI capacity rises, Pantheon AI Topusko positions Croatia as a serious contender in the race to host Europe’s next major digital hub. If executed as planned, the mega-campus could become a blueprint for future AI infrastructure where energy generation, sustainability, and hyperscale computing are developed together rather than separately.
Quick Facts
| Field | Value |
| Project Name | Pantheon AI Topusko |
| Location | Zagreb |
| Status | Announced / Permitting |
| Commissioning | Phase 1: Q1 2029 |
| Total IT Load | 500 MW |
| Total Capacity | 5.2 GW (Potential Grid Export) |
| Tier Level | Tier IV (Highest Resilience) |
| Project Type | Hyperscale AI Factory |
City Profile
| Header | Details |
| City Name | Topusko |
| Population | 2,800 |
| Urban Agglomeration | 3,500 |
| City GDP | Approx. €45 million |
| Per Capita Income | Approx. €12,500 |
| City Tier | Tier 4 – Small Municipality / Local Tourism & Spa Town |
| Key Strengths | Thermal spa tourism, historic health resort, natural surroundings, forestry, agriculture, peaceful lifestyle, regional connectivity, wellness potential |
Companies Involved
| Header | Details |
| Developer / Operator | Pantheon Atlas |
| Strategic Infrastructure Partner | Greenvolt International Power |
| Construction Contractor | Dalekovod Projekt |
| MEP Engineering | Ravel Ltd. |
| Network Connectivity | GreenMed Subsea (Milan-Rome-Zagreb route) |
| Power Infrastructure | Končar Group (Substations) |
Technical Specifications
| Header | Details |
| Power Capacity | 500 MW IT Load |
| UPS Redundancy | 2,000 MW / 8,000 MWh Battery Energy Storage System |
| Cooling System | Hybrid Liquid Cooling (AI-Optimized) |
| Connectivity | 4 Independent Fiber Routes across 3 EU Corridors |
| PUE Target | 1.12 |
| Energy Mix | 500 MW On-site Solar + Grid Renewables |
Milestones
| Header | Details |
| Announcement | April 29, 2026 |
| Construction Start | Early 2027 (Expected) |
| Phase 1 Go-Live | Q1 2029 |
| Full Buildout | 2032 |
Investment Details
| Header | Details |
| Total Investment | €50 Billion ($58.5 Billion USD) |
| Funding | Pantheon Atlas Transatlantic Fund |