The US DOE publishes a website to track Energy Storage Projects

"The DOE International Energy Storage Database provides free, up-to-date information on grid-connected energy storage projects and relevant state and federal policies. All information is vetted through a third-party verification process."

http://www.energystorageexchange.org

You can refine your search with Technology Type, Location, etc 

For example: with Battery, in France I found two Porjetcs:
- One in Brittany, based on Sodium Sulfur Batteries, providing 1GW for 7:12 :

and a Second One in French Riviera, Nice, based on Lithium-ion (what exact technology of li-ion ?), providing 1GW also, but for 30mn only

Maybe I should try and add my DIY ESS
It is small, BUT, if 500 families install this kind of system at home, they would provide also 1GW of power for several hours, captured from solar or/and wind, produced locally ...