Case Study – Integration of Solar and Storage at the Transmission Level 
Sam Ley, PE, Director of Engineering, AES Distributed Energy
In 2016, AES DE and the Kauai Island Utility Cooperative undertook to build the world’s largest combined solar and lithium ion battery storage project in the world. In this presentation we will describe the challenges faced by the cooperative as they transition toward 100% renewable penetration, the solutions we arrived at, and the results of the last 12 months of operation.

Included will be data demonstrating 24 hours of useful activity from a 5-hour duration battery system, from frequency response and regulation, to spinning reserve and capacity release. We hope to leave you with a broader idea of what is possible with storage and inspire creativity in the use of dispatchable assets to benefit an entire grid.