Electricity Storage Association (Popularity: ): "A non-profit trade association bringing electricity storage solutions to the power industry" links to a tutorial on Energy Storage Technologies Flywheels and Compressed Air (Popularity: ): Page from a series of lecture notes; discusses flywheels and compares them to compressed air for energy storage. Includes formulae to calculate energy stored. Energy Storage Council (Popularity: ): Group of industries and developers to advocate and facilitate the deployment of energy storage technologies. Links to pages of 6 charter members and 2 newer members. Energy Storage (Popularity: ): history highlights thermal. From the U. of Rochester District Energy Library. Energy Storage for Power Systems, by A. Ter-Gazarian (Popularity: ): Page at the Institute of Electrical Engineers, selling 244 page, hardback book. California Distributed Energy Resource Guide: Energy Storage and UPS Systems (Popularity: ): Summarizes five energy storage technologies: batteries, flywheels, superconductors, capacitors, and compressed air. "How Blackouts Work" from Howstuffworks (Popularity: ): Links to "Big Blackouts in US History" and says, "the power grid . . . cannot store any power" Includes US maps. Energy Storage Unit Ensures Consistent Power Supply in TVA Service Area (Popularity: ): Describes distributed superconducting magnetic energy storage (D-SMES) unit to control sags and surges in grid. Includes contacts. Wikipedia (Popularity: ): Free encyclopedia article covers history and reasons, links to related topics. Renewable energy - Wikipedia (Popularity: ): portion of article describes need for storage with renewable energy sources. Ancient Inventions (Popularity: ): Describes the history and operation of the Baghdad Battery - (c. 250 BC). Inexpensive Electrical Energy Storage (Popularity: ): Introduces a new, inexpensive full flow electrolyte battery for bulk energy storage.