The European Union and the United States have released joint guidance to harmonize safety, power, and permitting standards for modular data centers. The initiative aims to accelerate deployment and improve energy efficiency across borders. The guidance aligns core technical requirements-including modular enclosure certification and energy performance metrics-and seeks to reduce permitting delays in both regions. This move addresses growing demand for scalable digital infrastructure in Europe and North America.
Background
Modular data centers, which are factory-built units designed for rapid deployment, must comply with strict safety, electrical, and efficiency standards. In the U.S., UL 2755 certification covers structural, fire, and electrical risks. In Europe, EN 50600 addresses design, energy efficiency, and operational requirements specific to modular installations. Aligning these standards is considered vital for enabling cross-border projects and streamlining permitting processes.1Modular Data Center Planning and Deployment - Green Data Center Guide
Details
The U.S.-EU guidance proposes mutual recognition of certification frameworks when possible. For instance, compliance with UL 2755 in the U.S. could satisfy structural and electrical requirements under EN 50600 in Europe, eliminating redundant testing. The guidance also encourages convergence on power system standards, such as low-voltage installations (IEC 60364), as well as shared cabling and power distribution protocols.26/11/2025 THE EVOLUTION OF MODULAR DATA CENTERS:
Permitting authorities in both regions have identified similar obstacles slowing modular data center deployment. In the U.S., projects encounter zoning and grid interconnection delays, driven by demand for AI-capable facilities. Europe enforces stricter environmental mandates, including energy efficiency thresholds (such as Power Usage Effectiveness targets), requirements for waste-heat reuse, and sustainability reporting obligations.3AI and Data Center Infrastructure Face Zoning Law Hurdles
The guidance addresses policy differences affecting cross-border development. Challenges such as grid connection moratoria in Ireland and data localization laws in certain member states have previously hindered operators' expansion plans. The joint framework recommends regulatory dialogue to prevent unilateral measures that could restrict modular data center scalability.42025 Trade Barriers
Outlook
The framework is expected to enable faster approval of modular data center projects through coordinated standards and streamlined permitting. Authorities in the U.S. and EU plan to hold further consultations this quarter to formalize mutual recognition processes. This alignment may influence broader efforts to harmonize transatlantic infrastructure regulations, with possible implications for future digital and energy transition initiatives.
