To ensure availability in future decentralized energy generation and consumption, electrical energy storage systems are inevitable. They store electrical energy of generation plants (e.g. the photovoltaic system) when sun is shining and make energy available again at any time. That means that energy is consumed where it is generated, reducing grid losses and creating self-sufficiency. However, this also increases the complexity of systems. Which makes it more difficult for planners, installers and operators to construct such systems safely and in accordance with the recognized rules of technology, to integrate them into existing systems and to operate them safely.

This book deals with the various storage concepts, taking into account the currently valid installation regulations. It serves as a guide for planners, installers and operators on the complex topic of storage systems.

The following topics are included:

• Terms and definitions
• Application of technical regulations
• VDE-AR-E 2510-2
• Operating modes
• Protective measures in electrical plants with storage
• Erection of generating plants
• Requirements for grid connection
• Installation of storage tanks
• Testing of storage tanks