Greensmith Energy Management Systems, Rockville, Md., deployed an energy storage system (ESS) that utilizes an advanced, battery-agnostic technology platform. 
This “a la carte” energy storage software, design and grid integration services monitors and controls all of the various elements within the ESS, including the batteries, inverter, fire protection system and even AC system. By centralizing the information and controls, Greensmith can consistently dispatch systems according to customer's commands and provide safety oversights.
How it works is:
Within each ESS, Greensmith installs a site controller to communicate with the inverter and battery management system over a variety of protocols (including serial protocols, CANbus and modbus). This site controller also communicates with external networks over a TCP/IP-based connection, enabling remote control through a browser-based interface or third-party control systems over modbus or DNP3 protocols.
The multiple ESS units also enable fleet control. For instance, a utility customer may have many individual ESS units from different manufacturers that they want to run together. This system provides one central framework to enable exactly that.
In its next generation of software, dubbed "BOS4," Greensmith is also deploying a rule-based engine that allows ESS systems to dispatch based on an application priority hierarchy. This development will tie into an upcoming automated commercial and industrial product, which provides similar rule-based conditions for behind-the-meter commercial and industrial customers interested in deploying energy storage to save on energy bills.
Greensmith Energy Management Systems
888-882-7430
http://www.greensmithenergy.com
