The energy storage technology tested is based on lithium-titanate battery cells. Two prototype 1MW battery storage devices were installed and demonstrated at a substation owned and operated by Indianapolis Power & Light, an AES company.
Based on testing performed to date, the large-scale units passed the initial demonstration and validation requirements, meeting design characteristics and performing in its anticipated applications.
KEMA designed a three-phase test program for the AES battery storage system that included installation, integration and functional testing, battery performance testing, and utility application-level testing.
The test of the prototype system reportedly demonstrates how advanced storage technologies can benefit the electricity grid through applications such as frequency regulation. One of the main features of the battery storage system is that it can respond to control commands with up to full power in milliseconds.
