This standard applies to a. new data centers@ or portions thereof@ and their systems; b. new additions to data centers@ or portions thereof@ and their systems; c. and modifications to systems and equipment in existing data centers or portions thereof. The provisions of this standard do not apply to a. telephone exchanges@ b. essential facilities@ and c. information technology equipment (ITE). Where specifically noted in this standard@ certain other buildings or elements of buildings shall be exempt. This standard shall not be used to circumvent any safety@ health@ or environmental requirements. PURPOSE The purpose of this standard is to establish the minimum energy efficiency requirements of data centers for a. design@ construction@ and a plan for operation and maintenance; and b. utilization of on-site or off-site renewable energy resources.
ASHRAE 90.4-2016 history
2024ASHRAE 90.4-2019 Standard 90.4-2019 -- Energy Standard for Data Centers- (ANSI Approved)