What is a flow battery primarily used for?

A flow battery is primarily used as a type of storage solution for renewable energy. This technology is particularly suited for applications where large amounts of energy need to be stored for later use, such as integrating with solar or wind energy systems. Flow batteries allow for the efficient storage of energy generated during peak production times and can release that energy when needed, thus helping to balance supply and demand in a renewable energy system.

The design of flow batteries, which typically consists of two electrolyte solutions that flow through a cell stack, enables them to store and release energy efficiently. Additionally, they can be easily scaled by increasing the volume of the electrolytes, making them a versatile option for large-scale energy storage applications.

This function distinguishes flow batteries from other technologies. While some options mention devices that convert energy or strengthen battery lifespan, these are not the main functions of flow batteries. Their primary role in renewable energy applications emphasizes their importance for energy management and sustainability in the power grid.