Pacific Gas & Electric says it is applying for stimulus funds to build a compressed-air storage facility able to store as much energy capacity as a medium-size power plant.
Newly formed firm Energy Storage and Power plans to make compressed-air energy storage machines for utilities that need storage for wind and solar power sources.
Report says auto industry breakthroughs will provide the alternative energy sector with power storage solution.
Storage on the grid would allow use of more solar and wind power and avoid the need for new power plants. So what's holding up grid storage?