Temporal CEO Cam Carver told OurWindsor.ca that this is the first time flywheels have been used on a Canadian power grid.
Flywheel technology will be familiar to anyone who has used a potter's wheel, the Globe and Mail notes, and is a key component of steam engines.
The wheels are charged by electric motors hooked up to the power grid, and can switch back and forth between receiving power and generating power on a on-demand basis.
Like many other power authorities, IESO is looking for the best way to store energy from non-traditional sources. In the IESO tests, the flywheels are up against several types of batteries and a system that stores power as hydrogen.