1. Operating Reserves Technical Requirements;Alberta Electricity System Operator,2004
2. Energy Storage Initiative Issue Identification;Alberta Electricity System Operator,2013
3. Non-Generator Resource Regulation Energy Management Project Implementation Plan – Version 2.1;California ISO,2013
4. High-value energy storage for the grid: a multi-dimensional look;Culver;The Electricity Journal,2010
5. Electricity Energy Storage Technology Options A White Paper Primer on Applications, Costs, and Benefits;Electric Power Research Institute,2010