I have to admit I missed this technology. I came across a post about some new start-ups funded by the IAF and noticed one company in the mix that was focused on flywheel energy storage.
I dug around a bit and was very surprised to see how advanced flywheel storage was.
I was also very surprised to find out that flywheel storage is so much more cost effective then traditional battery technologies – 1/2 the cost of traditional UPS systems apparently.
Flywheels seem to have tremendous potential as evidenced by a 20MW flywheel power plant which was opened in 2011.
Very cool stuff!