ASHRAE Standard 90.4, "Energy Standard for Data Centers," sets minimum energy-efficiency requirements for data-center design and operation. Rather than prescribing a single metric, it uses a performance-based approach with a Mechanical Load Component (MLC) and Electrical Loss Component (ELC) that designs must meet, complementing ASHRAE 90.1 and giving data centers flexibility to meet efficiency targets through varied cooling and power designs.
Category: Standards & Governance · Subcategory: International Standards · Part of the AIDC Technical Terminology reference.