The Basics of Flywheel Energy Storage

How does a flywheel energy storage system work?

Flywheel Energy Storage Systems (FESS) rely on a mechanical working principle: An electric motor is used to spin a rotor of high inertia up to 20,000-50,000 rpm. Electrical energy is thus converted to kinetic energy for storage. For discharging, the motor acts as a generator, braking the rotor to produce electricity.

Do power utilities need a flywheel storage system?

Power utilities need innovative ways to store renewable wind and solar energy, during low demand periods, so they can release it after sunset when demand is high. Several innovative power utilities already use flywheel storage systems to maintain power grid frequency. Renewable energy is knocking on flywheel energy’s door.

What is a flywheel energy storage system (fess)?

At the heart of this transformational journey lies the concept of energy storage, and one particular method is making waves: flywheel energy storage systems (FESS). This innovative approach harnesses kinetic energy to create a robust storage solution that addresses some major challenges faced by conventional energy systems.

How do flywheels work?

Understanding FESS begins with recognizing their fundamental mechanisms. Unlike traditional batteries that use chemical reactions for energy storage and release, flywheels turn kinetic energy into power. Picture a spinning top; as it spins, it holds energy. When you need that energy, slowing down the spin can release it.