Grid energy storage | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-05-06

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Grid_energy_storage


00:01:19 1 Benefits of storage and managing peak load
00:05:22 1.1 Demand side management and grid storage
00:08:14 1.2 Energy storages for grid applications
00:10:54 2 Forms
00:11:03 2.1 Air
00:11:11 2.1.1 Compressed air
00:11:46 2.1.2 Liquid air
00:12:09 2.2 Batteries
00:14:39 2.2.1 Grid-oriented battery technologies
00:15:21 2.2.1.1 Molten-state batteries
00:16:13 2.2.1.2 Flow batteries
00:17:03 2.2.2 Examples
00:19:53 2.3 Electric vehicles
00:22:05 2.4 Flywheel
00:24:54 2.5 Hydrogen
00:27:44 2.5.1 Underground hydrogen storage
00:28:27 2.5.2 Power to gas
00:29:55 2.5.3 The power-to-ammonia concept
00:31:37 2.6 Hydroelectricity
00:31:46 2.6.1 Pumped water
00:34:27 2.6.2 Hydroelectric dams
00:37:03 2.7 Superconducting magnetic energy
00:39:04 2.8 Thermal
00:40:35 2.9 Gravitational potential energy storage with solid masses
00:40:54 3 Economics
00:44:39 3.1 Load leveling
00:46:55 3.2 Energy demand management
00:49:34 3.3 Portability
00:52:18 3.4 Reliability



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SUMMARY
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Grid energy storage (also called large-scale energy storage) is a collection of methods used to store electrical energy on a large scale within an electrical power grid. Electrical energy is stored during times when production (especially from intermittent power plants such as renewable electricity sources such as wind power, tidal power, solar power) exceeds consumption, and returned to the grid when production falls below consumption.
As of 2017, the largest form of grid energy storage is dammed hydroelectricity, with both conventional hydroelectric generation as well as pumped storage. Alternatives include rail energy storage, where rail cars carrying 300 ton weights are moved up or down an 8-mile section of inclined rail track, storing or releasing energy as a result; or disused oil-well potential energy storage,  where 100 ton weights are raised or lowered in a 12,000 ft deep decommissioned oil well.
Developments in battery storage have enabled commercially viable projects to store energy during peak production and release during peak demand.
Two alternatives to grid storage are the use of peaking power plants to fill in supply gaps and demand response to shift load to other times.