Consulting-Specifying Engineer, Mar. 2014, by Suzan X. Sun-Yuan and Mohsen Aghai.
http://www.csemag.com/single-article/integrating-and-optimizing-power-and-mechanical-systems/4c73b34e4d119694b785fd6dc195a94f.html

"As the overall “brains” of the building, the BAS coordinates the work of all the building’s engineered systems, including the power management system. Overall building power demand requirements must be carefully evaluated by both mechanical and electrical engineers during design, with respect to the challenges of both disciplines."