Engineering:Outline of energy storage

The following outline is provided as an overview of and topical guide to energy storage:

Energy storage – accomplished by devices or physical media that store some form of energy to perform some useful operation at a later time. A device that stores energy is sometimes called an accumulator.

Types of energy storage

• Pumped-storage hydroelectricity
• Superconducting magnetic energy storage
• flow batteries
• Conventional batteries (e.g. rechargeable electricity storage system)
• Gas holder
• Grid energy storage
• Fuel cell and hydrogen technology
• Gravitational potential energy storage with solid masses
• Capacitors (e.g. rechargeable electricity storage system)
• Electromagnetic mass
• Mainspring
• Power to gas
• Thermal energy storage
• Solar chimney
• Compressed fluids (e.g. compressed air)
• flywheels
• Vacuum storage (in rush generation technology)

General energy storage concepts

1. Using a high density magnetic field. Energy [math]\displaystyle{ E }[/math] in terms of magnetic field strength [math]\displaystyle{ B }[/math] is

[math]\displaystyle{ E = \frac{1}{2}B^2 = \frac{1}{2}Li^2 }[/math]

where [math]\displaystyle{ L }[/math] is the inductance of the electromagnet and [math]\displaystyle{ i }[/math] is the current.

See also

• Outline of energy development
• List of energy storage projects
• List of energy topics
• United States Department of Energy International Energy Storage Database

External links

• U.S. Dept of Energy - Energy Storage Systems Government research center on energy storage technology.
• U.S. Dept of Energy - Energy Storage Systems Database U.S. DOE's International Energy Storage Database with Technology use cases