Building Operating Management, Mar. 2017, by Lindsay Audin.
http://www.facilitiesnet.com/energyefficiency/article/Plan-Audit-Commission-Measure-and-Verify-Steps-To-A-Successful-Energy-Upgrade--17074

"When developing ways to improve energy efficiency in commercial facilities, two words stand out: Plan ahead. While some efficiency options are almost literally plug-and-play, maximizing benefits while avoiding pitfalls involves steps taken long before choices are made and equipment specified. New technologies, incentives, and codes need to be integrated into any strategy for saving money through energy use reduction. Done well, those steps may lead to higher quality, greater savings, lower costs, and happier occupants." An article in 3-parts.