Energy storage is one area that has seen a great deal of research and development. But it's not all about better batteries. Here is a model of a flywheel power generation station, two of which are now connected to the grid in the U.S. The flywheels (the cylinders) spin continually and convert that to quick bursts of electricity which are fed into the grid. The main application is for frequency regulation, which requires anywhere from a few seconds to a few minutes of power to maintain an even balance between grid supply and demand. What's currently used are natural gas plants.
March 7, 2011 9:25 AM PST
Photo by: Martin LaMonica/CNET
| Caption by: Martin LaMonica
Conversation powered by Livefyre