Flywheel realizes energy storage video

How does a flywheel work?

At its core, a flywheel system consists of a high-speed rotor suspended by magnetic bearings within a vacuum chamber. This design minimizes friction and energy loss, allowing efficient energy storage and retrieval. When energy is needed, the kinetic energy of the spinning flywheel is converted back into electricity with remarkable precision.

What is the difference between a flywheel and a battery storage system?

Flywheel Systems are more suited for applications that require rapid energy bursts, such as power grid stabilization, frequency regulation, and backup power for critical infrastructure. Battery Storage is typically a better choice for long-term energy storage, such as for renewable energy systems (solar or wind) or home energy storage.

Can a flywheel store energy?

A project team from Graz University of Technology (TU Graz) recently developed a prototype flywheel storage system that can store electrical energy and provide fast charging capabilities. Flywheels are considered one of the world’s oldest forms of energy storage, yet they are still relevant today.

What is a flywheel energy storage system?

A flywheel energy storage system is a mechanical device used to store energy through rotational motion. When excess electricity is available, it is used to accelerate a flywheel to a very high speed. The energy is stored as kinetic energy and can be retrieved by slowing down the flywheel, converting the motion back into electricity.

Why are flywheels important?

Flywheels are particularly effective in stabilizing power grids. Their ability to deliver rapid bursts of energy helps compensate for fluctuations in renewable energy generation from sources like wind and solar. This capability underscores the versatility of flywheel systems and their potential to address modern energy challenges.

How can flywheel energy storage be improved?

Increasing the rotating mass, optimising the shape of the flywheel or simply making it spin faster will increase the amount of energy stored. Flywheel energy storage systems require little maintenance and can quickly respond to peaks in demand.