Large-Scale Battery Storage

A large-scale battery storage system is a large-dimensioned battery storage system on the megawatt scale. It can absorb, store and, when required, release large quantities of electrical energy.

Position within the energy system

Large-scale battery storage systems are typically connected directly to the power grid and take on central tasks for a flexible energy system. In practice they are closely related to the term large battery storage and usually count among grid-scale battery storage systems.

Typical fields of application

Large-scale battery storage systems are used in particular where high power output must be provided quickly and flexibly. This includes:

• Stabilising the grid frequency
• Integrating renewable energies
• Balancing electricity fluctuations
• Providing balancing power
• Making the electricity system more flexible

Role in grid stability and balancing power

Thanks to their very fast response capability, large-scale battery storage systems are particularly suited to providing primary control reserve and secondary control reserve. They can absorb or release energy within the shortest time and thus balance frequency deviations in the grid.

Significance for the energy transition

As the share of solar and wind energy rises, the need for large, rapidly controllable storage systems grows. Large-scale battery storage systems help to better integrate the volatile feed-in from renewable energies into the electricity system and to ensure security of supply.

Frequently Asked Questions (FAQs)

What is a large-scale battery storage system?

A large-scale battery storage system is a large-dimensioned battery storage system on the megawatt scale that can store electricity flexibly and provide it again as needed.

What are large-scale battery storage systems used for?

Large-scale battery storage systems are used for grid stabilisation, the integration of renewable energies, the provision of balancing power and making the electricity system more flexible.

How does a large-scale battery storage system differ from smaller battery storage systems?

Large-scale battery storage systems operate on the megawatt scale and are designed for large energy flows as well as grid-supporting applications, whereas smaller storage systems are mostly operated behind the grid connection of individual companies.

Why are large-scale battery storage systems important for renewable energies?

Large-scale battery storage systems can absorb electricity surpluses from solar and wind energy and feed them back in later. In this way they help to balance out the fluctuations of renewable energies.

Can large-scale battery storage systems provide balancing power?

Yes. Large-scale battery storage systems can provide primary and secondary control reserve and thus make an important contribution to stabilising the grid frequency.

Are large-scale battery storage systems grid-scale storage systems?

Yes. Large-scale battery storage systems generally count among grid-scale storage systems because they are operated directly at grid level and take on system-relevant functions.