Equipment
Energy Management System (EMS)
Definition
Software and hardware systems used to monitor, measure, analyze, and control energy consumption across a facility or portfolio. An EMS collects data from meters, utility bills, and building systems to identify inefficiencies, track progress against targets, and automate demand response.
Why It Matters for Your Business
An EMS provides the data visibility needed to manage energy costs strategically. Organizations that deploy EMS solutions consistently report 5–25% energy savings through better operational decisions, automated controls, and early detection of equipment faults.
Frequently Asked Questions
What data does an EMS collect?
Typically: utility meter data (electricity, gas, water), submetered circuit data, weather data, equipment runtime and setpoints, occupancy schedules, and utility bill data. Advanced EMS platforms integrate with BAS systems for real-time control.
Is an EMS different from an EMIS?
EMIS (Energy Management Information System) is a broader term encompassing both monitoring/analysis software (EMS) and control capabilities. In practice, the terms are often used interchangeably.