BESS System: What It Is, How It Works, and Why
Discover how a BESS system works, what advantages it offers, and why it is key to integrating renewable energy, with Archimede
The BESS system is designed to store electrical energy in batteries and manage its use efficiently. Unlike a conventional battery, a BESS system not only includes batteries, but also components such as inverters, transformers, and an EMS (Energy Management System, which is control software).
1. What is BESS? BESS, short for Battery Energy Storage System, is an advanced energy storage technology solution widely adopted in the renewable energy sector. Within the industry, it is commonly referred to as “BESS” or “BESS batteries.”
A BESS is an energy storage system based on rechargeable batteries, mainly lithium-ion. Its dual role is to store excess energy and release it when needed. The architecture of a BESS is complex and modular, consisting of: Batteries (modules, racks, cabinets): the core of the system, often made with LFP (lithium-iron-phosphate) cells.
NYSERDA's Clean Energy Siting team has been providing trainings to local authorities having jurisdiction (AHJs) on the current iteration of the fire code pertaining to battery energy storage systems (BESS), known as stationary energy storage systems in the code, since prior to the current code's adoption.
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