There are also things like MAGFLY that stores electricity (from e.g. solar panels) as kinetic energy in flywheels: - https://www.flywheel.dk/ https://www.flywh

There are also things like MAGFLY that stores electricity (from e.g. solar panels) as kinetic energy in flywheels: - https://www.flywheel.dk/ https://www.flywheel.dk/ - https://wattsuppower.com/flywheel/ https://wattsuppower.com/flywheel/