BESS – Battery Energy Storage System

BESS stands for Battery Energy Storage System and refers to a complete battery storage system. It comprises not only the battery itself, but also inverters, control systems, the grid connection and an integrated energy management system.

Components of a BESS

A BESS typically consists of:

• Battery units for storing electrical energy
• Power electronics (inverters)
• Control and safety systems
• Integration into an energy management system

Unlike a pure electricity storage system, BESS therefore refers to the entire system.

Applications in industry and commerce

In industrial and commercial applications, a BESS is used for:

• Peak shaving and the reduction of grid fees
• Increasing self-consumption from photovoltaic systems
• Optimising charging infrastructure
• Providing grid-supporting services at grid level

Distinction from other storage terms

A BESS can be designed as a large battery storage system in the megawatt range as well as a commercial battery storage system in the smaller power range. What matters is that the term describes the complete system – not just the battery.

Frequently Asked Questions (FAQs)

What does BESS mean?

BESS stands for Battery Energy Storage System and refers to a complete battery storage system including the battery, inverter, control system and energy management system.

What does a BESS consist of?

A BESS consists of battery units, inverters, control technology, an energy management system and the necessary grid infrastructure.

What is a BESS used for in industry?

In industry, a BESS is used to reduce peak loads, lower grid fees, increase the self-consumption of solar power and enable grid-supporting applications.

How does a BESS work together with a PV system?

A BESS stores surplus solar power from a photovoltaic system and makes it available again at a later point in time in order to reduce grid consumption or optimise load profiles.

Is a BESS the same as an electricity storage system?

An electricity storage system usually refers to the battery unit itself, whereas a BESS comprises the complete system including power electronics, control and management.