Browse Definitions:
Definition

compressed air energy storage (CAES)

Compressed air energy storage (CAES) is a way to store massive amounts of renewable power by compressing air at very high pressures and storing it in large underground caverns, depleted wells or aquifers. The compressed air can be released and run through turbines to generate power when wind turbines and solar plants reduce output and power is needed. Hundreds of hours of output can be stored, providing the ability to cover long doldrum wind periods or a series of cloudy days. 

Currently, underground caverns and depleted wells are used to store natural gas.  A nationwide network of CAES plants could use the same types of geographical formations to offer very economical energy storage.  In the extreme event a cavern becomes fully depleted of air, most CAES turbines can also run in natural gas-only mode. Unlike a nuclear or coal plant, a plant that uses CAES is able to supply fully dispatchable power, which means that the plant is able to increase and decrease its output to match fluctuating customer demand. This flexibility is a major advantage for usefulness to the electric grid.

Learn more:

Dr. Joseph Romm explains more about CAES in  "The Holy Grail of clean energy economy is in sight: Affordable storage for wind and solar."

 

Contributor: Dr. Joseph Romm

This was last updated in September 2010

Start the conversation

Send me notifications when other members comment.

By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Please create a username to comment.

-ADS BY GOOGLE

File Extensions and File Formats

Powered by:

SearchCompliance

SearchSecurity

  • copyright

    Copyright is a legal term describing ownership of control of the rights to the use and distribution of certain works of creative ...

  • keylogger (keystroke logger or system monitor)

    A keylogger, sometimes called a keystroke logger or system monitor, is a type of surveillance technology used to monitor and ...

  • password

    A password is an unspaced sequence of characters used to determine that a computer user requesting access to a computer system is...

SearchHealthIT

SearchDisasterRecovery

  • business continuity plan (BCP)

    A business continuity plan (BCP) is a document that consists of the critical information an organization needs to continue ...

  • call tree

    A call tree -- sometimes referred to as a phone tree -- is a telecommunications chain for notifying specific individuals of an ...

  • mass notification system (MNS)

    A mass notification system is a platform that sends one-way messages to inform employees and the public of an emergency.

SearchStorage

  • RAID (redundant array of independent disks)

    RAID (redundant array of independent disks) is a way of storing the same data in different places on multiple hard disks to ...

  • data migration

    Data migration is the process of transferring data between data storage systems, data formats or computer systems.

  • compact disc (CD)

    A compact disc is a portable storage medium that can be used for recording, storing and playing back audio, video and other data ...

SearchSolidStateStorage

  • NVMe (non-volatile memory express)

    NVMe (non-volatile memory express) is a host controller interface and storage protocol to enable a solid-state drive to use the ...

  • SSD RAID (solid-state drive RAID)

    SSD RAID (solid-state drive RAID) is a methodology commonly used to protect data by distributing redundant data blocks across ...

  • Tier 0

    Tier 0 (tier zero) is a level of data storage that is faster, and perhaps more expensive, than any other level in the storage ...

SearchCloudStorage

  • RESTful API

    A RESTful application program interface breaks down a transaction to create a series of small modules, each of which addresses an...

  • cloud storage infrastructure

    Cloud storage infrastructure is the hardware and software framework that supports the computing requirements of a private or ...

  • Zadara VPSA and ZIOS

    Zadara Storage provides block, file or object storage with varying levels of compute and capacity through its ZIOS and VPSA ...

Close