Engineered Systems, Oct. 2016, by Carlos Petty.
http://www.esmagazine.com/articles/97961-chiller-plant-optimization-the-role-of-controls

"Properly selected automated controls to minimize chiller plant energy, power consumption, and the cost of operations are essential for overarching chiller plant performance. Effective plant managers are driven to operate their plants at the lowest life cycle costs possible. This begins with the initial first cost of construction and recurring plant lifecycle operating costs, while still accounting for all the complexities and interaction among major plant equipment components."