Flywheels as Energy Storage

It’s been a while since we’ve discussed converting off-peak electricity to kinetic energy and storing it with the use of flywheels.  Linked above is a start-up that claims to have breakthrough technology in this space.

And indeed, breakthroughs will be required, as flywheels have been around forever, and have never proved competitive–and that was before all the advancements in batteries.

I am suspicious of any company that solicits investment dollars offering so little information, but perhaps that’s just me.