Building energy management systems allow building managers to be flexible and agile in their approach to energy reduction.

Fremont, CA: Building energy management systems (BEMS) has emerged as an essential application for commercial buildings in the years since the building management system (BMS)'s introduction in terms of energy efficiency. Although BEMS and BMS are very similar, BEMS is a slightly more sophisticated commercial energy management system. A BMS allows all systems to be monitored and controlled centrally; a BEMS provides monitoring and information specifically focused on systems involving energy use and demand, which facilities managers can then act on to save money.

For example, if a utility declares a demand response event, a BEMS can receive that external signal and respond by sending control instructions to building systems. BEMS may guide lights to dim in certain areas, increase the temperature setpoint, or shift from utility generation to a battery storage system to reduce the overall load. BEMS are also capable of monitoring, aggregating, and processing data at a primary level to inform logic-controlled responses. Yet, while BEMS are beneficial, they are still primarily used in a reactionary manner to address issues after the fact. Organizations rarely use them in such a way that would be useful for predicting and optimizing future building performance.

IoT based Analytical platform for Building Energy Management solutions

IoT-based analytics platforms are the most recent advancement in commercial building energy management. An IoT-based platform provides facilities managers with unprecedented insight into their building systems, allowing them to control operations and the overall building environment proactively. It is more than a control system because the IoT actually complements traditional building management systems. Knowing where, when, and how their building consumes energy enables facilities managers to implement load-shedding schedules to actively and strategically reduce energy demand (and thus utility costs).

IoT-based platforms can monitor and measure various aspects of your building and bring in various other data inputs to extrapolate anomalies, make correlations, and assist end users in gaining knowledge to make smart operational decisions that affect the bottom line.

It is possible to design a building's optimal approach to energy management for guaranteed cost savings using the right data variables—collected, correlated, and analyzed by the IoT. This IoT-based strategy is far more effective for energy management than traditional BMS and BEMS because a commercial building's energy consumption constantly changes based on various dynamic conditions. There is no static model of energy use. Better energy management, then, is dependent on having the right data at the right time, allowing building managers to be flexible and agile in their approach to energy reduction.