Owing to the call for energy efficiency, the need to optimize the energy
consumption of commercial buildings-- responsible for over 40% of US energy
consumption--has recently gained significant attention. Moreover, the ability
to participate in the retail electricity markets through proactive demand-side
participation has recently led to development of economic model predictive
control (EMPC) for building's Heating, Ventilation, and Air Conditioning (HVAC)
system. The objective of this paper is to develop a price-sensitive operational
model for building's HVAC systems while considering inflexible loads and other
distributed energy resources (DERs) such as photovoltaic (PV) generation and
battery storage for the buildings. A Nonlinear Economic Model Predictive
Controller (NL-EMPC) is presented to minimize the net cost of energy usage by
building's HVAC system while satisfying the comfort-level of building's
occupants. The efficiency of the proposed NL-EMPC controller is evaluated using
several simulation case studies.