None of your sources on energy storage included the best one - liquid air energy storage. (lowtechmagazine.com)
Toronto - based energy storage firm Hydrostor Inc. and WEB Aruba N.V. have signed a Power Purchase Agreement (PPA) for an underwater compressed air energy storage facility based on Hydrostor's proprietary technology. (marsdd.com)
«We look forward to rapidly commercializing our scalable underwater compressed air energy storage technology.» (marsdd.com)