BESS – A Battery Energy Storage System.
Our flagship energy storage container, providing power when you need it most.

What it is.

A Containerized Battery Energy Storage System.

Powin Energy’s BESS is a complete modular energy storage system that integrates battery storage, battery management, power conversion, and energy management into a packaged solution. Its comprehensive design allows BESS to have the versatility to form various megawatt systems. Operating on Powin’s energy management system (EMS), BESS is an automated solution that is capable of performing a variety of customer specified energy storage applications, which can be remotely monitored and operated from any region of the world using its web-based interface.

BESS is designed to meet the demand for advanced energy storage that can optimize operations and relieve the need for infrastructure upgrades.

What it does.

Powin Energy’s grid-scale storage solutions provide a critical link in making clean energy resources, like wind and solar, economically viable by providing technologies that make these projects operate more efficiently. Our BESS unit helps to smooth-out periods of high and low energy production that characterize alternative energy sources. At Powin Energy, we provide customized solutions to meet the demand for advanced energy storage technologies that are scalable, commercially viable and emission free.

“Lower costs, improved technology, and the advent of transparent energy markets have spurred an energy storage renaissance.”

- Dr. Ramteen Sioshansi, Ohio State University

BESS on the road

The container that houses the storage system is a standard 20-foot shipping container. The BESS can be transported to an installation site using a truck and a standard tandem axle trailer. It can be installed at a site on either a concrete pad or concrete corner blocks and connected to a power grid at a single point through an electrical disconnect installed on one side of the container. The electrical disconnect provides a 200A, 480V, 3Phase power connection for the containerized battery energy storage system. A transformer inside the container provides power for the temperature control system, lighting, and a UPS that powers the battery management and system computers.
The battery energy storage system uses two to eight bi-directional 30kW 480V power converters. These power converters provide both battery charging (AC to DC) and battery inverting (DC to AC) for grid storage applications.
The containerized BESS uses lithium ion batteries arranged into four independent battery banks. These batteries require no maintenance and they have an expected cycle life of more than 10 years. Each battery bank has its own battery management system which monitors the voltage and temperature of every battery cell. These battery management systems provide automatic protection for the batteries such as: over- and under-voltage protection, and over- and under-temperature protection.
The BESS includes a server that acts as the system controller. This allows the system to be operated from any computer connected to the Internet using a web-based browser. Operation of the unit simply involves using a series of drop-down menus on a graphical user interface to select when and at what rate the battery energy storage system should be charged and discharged, for example, based on time-of-use energy pricing. A more sophisticated control program can be provided to automatically dispatch the containerized battery storage system using a variety of inputs if desired.

Want to know more about BESS?

Drop a line and we’ll answer any questions you have.