Maincubes BER2: 186MW AI-Ready Hyperscale Campus Berlin

Status: Under Construction (Phase 2 Groundbreaking May 2026)   |   Location: Luckenwalde, South of Berlin

Project Overview

The MainHub Berlin (BER2) campus is a massive 186 MW infrastructure development designed to position Berlin as a major AI and cloud hub, alleviating the capacity constraints currently seen in Frankfurt. Developed by maincubes, the campus is specifically engineered to handle the thermal and electrical demands of modern AI factories, offering liquid-to-chip cooling capabilities for high-density GPU racks. The facility utilizes a modular design that allows for rapid deployment of compute capacity for global hyperscalers and sovereign cloud providers. Strategically located in the South Berlin cluster, it benefits from a direct connection to major international fiber backbones while operating under Germany’s strict GDPR and data sovereignty laws. The project is a pioneer in sustainable urban integration, featuring an advanced heat recovery system that feeds waste thermal energy into local municipal heating networks. By combining massive scale with specialized AI infrastructure, BER2 serves as a critical node for the training and inference of large language models across Central and Eastern Europe.

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