Browse Definitions :
Definition

tidal power

Contributor(s): Matthew Haughn

Tidal energy is the generation of clean electricity by harnessing potential energy of the shifting water in ocean tides.

The masses of Earth’s largest bodies of water are pulled by the gravitational field of the moon as it rotates around the planet. Tidal energy is harvested from the rising and falling water through a variety of methods including in-stream devices, barrages, tidal pools and dynamic tidal power, all of which work by driving a turbine.

The latter three methods rely on blocking the flow of the tidal waters within an area. The blockage creates a height difference that exploits gravity to produce greater force. The down side to these three methods is environmental disruption to the surrounding bodies of water. Older types of barrage systems are known to be particularly detrimental to fish populations. (Of the three, dynamic tidal power is the least damaging, as it does not enclose waters completely.)

In-stream systems are becoming increasingly popular, largely because they have the least impact on the environment. Furthermore, the systems are easier to remove for upgrades and create less disruption for sea-going traffic.

Tidal power is one of the most stable, reliable and adjustable types of green energy. Water-driven turbines also pose less risk to aquatic life than wind turbines do to avian life because the denser fluid drives a higher resistance at a lower rate of speed.

Although tidal power is more expensive to produce than wind power or solar power, newer technologies are improving efficiencies and lessening environmental impacts. In Atlantic Canada, which has the world’s highest tides, it is estimated that tidal energy could generate billions of dollars of revenue annually.

See a simple video demonstration of how a water turbine works:

This was last updated in January 2014

Continue Reading About tidal power

Join the conversation

1 comment

Send me notifications when other members comment.

Please create a username to comment.

this was a total help to my class mates
Cancel

-ADS BY GOOGLE

Extensions de fichiers et formats de fichiers

Motorisé par:

SearchCompliance

  • compliance framework

    A compliance framework is a structured set of guidelines that details an organization's processes for maintaining accordance with...

  • regulatory compliance

    Regulatory compliance is an organization's adherence to laws, regulations, guidelines and specifications relevant to its business...

  • privacy compliance

    Privacy compliance is a company's accordance with established personal information protection guidelines, specifications or ...

SearchSecurity

SearchHealthIT

  • telemedicine (telehealth)

    Telemedicine is the remote delivery of healthcare services, such as health assessments or consultations, over the ...

  • Project Nightingale

    Project Nightingale is a controversial partnership between Google and Ascension, the second largest health system in the United ...

  • medical practice management (MPM) software

    Medical practice management (MPM) software is a collection of computerized services used by healthcare professionals and ...

SearchDisasterRecovery

  • crisis management plan (CMP)

    A crisis management plan (CMP) outlines how to respond to a critical situation that would negatively affect an organization's ...

  • disaster recovery (DR) test

    A disaster recovery test (DR test) is the examination of each step in a disaster recovery plan as outlined in an organization's ...

  • business continuity plan (BCP)

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

SearchStorage

  • kilobyte (KB or Kbyte)

    A kilobyte (KB or Kbyte) is a unit of measurement for computer memory or data storage used by mathematics and computer science ...

  • megabytes per second (MBps)

    Megabytes per second (MBps) is a unit of measurement for data transfer speed to and from a computer storage device.

  • zettabyte

    A zettabyte is a unit of measurement used by technology professionals and the general public to describe a computer or other ...

Close