The purpose of this document is to provide recommendations on measuring and publishing values for PUE at dedicated data center facilities. These recommendations represent the collective work of a task force representing 7x24 Exchange, ASHRAE, The Green Grid, Silicon Valley Leadership Group, U.S. Department of Energy Save Energy Now Program, U.S. Environmental Protection Agency’s ENERGY STAR Program, United States Green Building Council, and Uptime Institute. The recommendations are prepared in accordance with the guiding principles discussed in the paper. The task force continues to work towards a Version 2 document, which will provide corresponding guidance for mixed-use buildings.