Power Engineering, May 2017, by Richard McMahon and Lola Infante.
http://www.power-eng.com/articles/print/volume-121/issue-5/features/harnessing-the-potential-of-energy-storage.html

"Energy storage has been called a "game changer," a "panacea," and a "disruptor." It has garnered widespread interest from electric companies, residential customers, businesses, manufacturers, regulators, and policymakers. Its potential for growth has been described as "astronomical" and "colossal," and its benefits sometimes touted as incalculable. Indeed, energy storage has the potential to be a true game changer."