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)
Tackling our air problems starts with traffic control, but individual action to reduce energy use and intensive farming would also help clean our air (newscientist.com)