BDEW states that 11 GW of pumped hydro projects are ongoing in Germany, Austria and Switzerland. Added to the 12.5 GW already in place, the total could cover the need for storage and flexibility of these countries up until 2020.
http://www.germanenergyblog.de/?p=13626

Another detailed article about Dresser Rand future CAES in Texas, as already discussed here in July 3’s Newsletter.
http://www.greentechmedia.com/articles/read/texas-calls-for-317mw-of-compressed-air-energy-storage2

ESN – Evonik installed a 1MW 700 kWh li-ion battery at STEAG’s Fenne power plant in Völklingen, Germany. The battery is a demonstration project to test renewable integration.