California Distributed Energy Resource Guide - Energy Storage and Uninterruptable Power Supply Systems. Covers batteries, flywheels, superconductors, capacitors, and compressed air.
Can Renewables Sustain Affluent Society? - Considers a few renewable energy sources, then addresses 'the storage problem'. Considers batteries, crushed rock, solar ponds, pumped hydro, hydrogen and thermochemical.
CoolAir UPS (60Hz) - Off-the-shelf system uses flywheel *and* compressed air for 50, 80, or 100kVA. "the only minute-for-minute alternative to traditional battery-based UPS solutions with none of their inherent limitations"
Distributed Energy and Energy Storage - CSIRO Energy Technology page includes lithium metal batteries, ultrabatteries, and supercapacitors. Links allow eMail to contacts for each project.
Electricity Storage Association - "A non-profit trade association bringing electricity storage solutions to the power industry" links to a tutorial on Energy Storage Technologies
Energy Storage - history highlights thermal. From the University of Rochester District Energy Library.
Energy Storage - Wikipedia entry covers history and reasons, has links to related topics, considers your submissions and edits.
Energy Storage - Covers "Why is energy storage important"? Compares methods of storage. Links to details.
Energy Storage - San Diego State University College of Engineering page includes equations and figures, and focuses on batteries for vehicles.
Energy Storage Council - 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 Systems - Research Program is part of the Office of Electricity Delivery and Energy Reliability at DOE (United States of America).
Graph - Shows system power ratings versus discharge time at rated power for several technologies. Includes several batteries, flywheels, Compressed Air Energy Storage, and pumped hydroelectric.
More on Energy Storage - College-level class notes include picture of pumped storage facility, comparison of energy densities, and the CAES heat problem.
Personal Energy Sources - Research group of the Delft University of Technology, Nederlands, developing alternative embedded power sources. Includes project summary.
Reliability Management and Oversight - Part of US DOE study shows (p. B-17) graph of reserve electricity prices moving between 0 and 750 dollars per MegaWatt-hour. [PDF]
$Windpower-Energy Storage$ - 17 message thread compares costs for pumped hydro, and batteries, including Vanadium Redox; in context of storage for wind or solar.
The Mechanical Battery - "the average person has probably never heard of a flywheel battery, the concept is starting to be taken seriously by commercial and governmental interests". Pictures of components and applications. (October 12, 2007)
A Chemist’s Plan to Save Planet Earth - Rick Smalley says (in interview) that more money should be spent on research into energy storage. [Discover] (February 15, 2005)
Cape Barren: Wind & Hydrogen - Tasmanian projects: wind farms, hydrogen for storage, and a redox battery. (December 8, 2004)
Energy Storage: Value is Clear, But Who Will Pay? - Energy storage devices have value to electricity production, delivery, and use. Options across the size spectrum are available today. Power Engineering covers the Electricity Storage Association meet. (August 15, 2004)
Energy storage - 39-post Physics Forums discussion starts with "list all the ways energy can be stored". (January 12, 2004)
Electricity Storage and Renewables? - Transmission and Distribution consultant uses 19 pages to compare technologies and reasons. From the Energy Storage Association. [PDF] (May 30, 2002)
Pumped storage for renewable energy - Google sci.energy group discussion compares pumped storage to Compressed Air Energy Storage, asks why the space cannot be used for nuke waste. (April 21, 1997)