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Web Directory - All Sites Sorted » Renewable Energy » Tidal Energy


Tidal Energy Directory: This is the Tidal Energy directory of All Sites Sorted, and is a subsection of the Renewable Energy Online Directory providing access to renewable tidal energy websites and resources. Tidal energy, also called tidal power, provides a vast potential for renewable electric power generation and industrial energy supply. Like solar and wind power, Tidal Energy is geography dependent – relying of course on proximity to ocean shores. Not all ocean shore locations are equal for tidal energy supply – since certain shore locations provide relatively high variances between high and low tides whereas other shore locations provide relatively low variance between tidal levels. The high variance locations have the greatest potential for tidal energy supply, namely the potential energy released from the difference between high tide levels and low tide levels.

Tidal Energy Directory - Low Tide
Low Tide versus High Tide = Tidal Energy

Other sources of tidal energy or power are oceanic currents, captured by turbines driven by currents passing the fixed turbine intake location.

Tides are generated by endless cycles of the rotation of the moon about the Earth, resulting in an almost limitless supply of energy. This is because the motion of the moon is unaffected by the harnessing of tides for power generation.

Ocean dams and barrages are used to harness the tidal energy. The efficiency of such ocean dams is proportional to the tidal swell, i.e. the difference between the high and low tide marks. These heights can be substantial, particularly in bays, and areas where tides must funnel into narrow gaps, such as in some river mouths and fjords. In a renowned example, average tidal amplitudes in the Bay of Fundy, Canada exceed 15 meters.

Because tidal energy generation is proportional to height, selection of the locations of the tidal power generator is important – namely where such high tidal amplitudes can be harnessed. Drawbacks of tidal energy generations include time dependency upon times of tidal flow and susceptibility of machine components to corrosion and degradation in high salinity environments found in ocean locations.

In often simplified terms, any place where the tide builds up in a good height differential and a significant flow, the water flow can be harnessed for power generation. One solution is building a dam or barrage dam across a bay openeing - with gates that open to allow the incoming tides, but close at high tide to direct the outgoing flow to turines. As the tide drops you have a big height difference between inside and outside the dam or barrage - to generate electricity.

The sites listed below focus on tidal energy and tidal power research, products, technology and business.

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tidal energy -prweb - Google News

Tidal turbine on stream - Hindu


Tidal turbine on stream
Hindu, India - Jul 18, 2008
It marked the first time a commercial-scale underwater turbine fed power into the network and the start of a new source of renewable energy . Tidal streams ...
Fri, 18 Jul 2008 21:49:33 GMT

EDF plans Brittany pilot tidal energy plant - International Water Power and Dam Construction


EDF plans Brittany pilot tidal energy plant
International Water Power and Dam Construction, UK - Jul 18, 2008
Electricite de France (EDF) plans to build a pilot tidal energy plant off the coast of Brittany in northwest France by 2011. The power utility said that the ...
Fri, 18 Jul 2008 16:36:17 GMT

Tidal power makes an impact - Practical Boat Owner Magazine


Practical Boat Owner Magazine

Tidal power makes an impact
Practical Boat Owner Magazine, UK - Jul 18, 2008
But Bristol-based tidal energy company Marine Current Turbines say they now have a viable solution with SeaGen, a 1.2MW turbine placed in Strangford Lough. ...
Fri, 18 Jul 2008 16:22:19 GMT

British Tidal Power System Connected to Grid - SustainableBusiness.com


British Tidal Power System Connected to Grid
SustainableBusiness.com, NY - Jul 18, 2008
It is hoped the tidal farm will be commissioned in 2011 or 2012. The company is also investigating the potential for tidal energy schemes in other parts of ...
Fri, 18 Jul 2008 16:14:25 GMT

Lochhead hails tidal energy as 'fantastic opportunity' - John O'Groat Journal


Lochhead hails tidal energy as 'fantastic opportunity'
John O'Groat Journal, UK - Jul 18, 2008
It was held at the Park Hotel in Thurso where a number of community representatives and Highland councillors gathered to discuss the tidal energy plans. ...
Fri, 18 Jul 2008 10:11:13 GMT

Tidal Power Generator Going Online in Ireland - FOXNews


Tidal Power Generator Going Online in Ireland
FOXNews - Jul 17, 2008
The other difference with wind is that tidal energy is completely predictable. "Tides are not driven by weather, but instead by the relative motion of the ...
Fri, 18 Jul 2008 01:25:18 GMT

Britain gets first taste of big tidal power - guardian.co.uk


Britain gets first taste of big tidal power
guardian.co.uk, UK - Jul 17, 2008
"This is an important milestone for the company and indeed the development of the marine renewable energy sector as a whole," MCT's Managing Director Martin ...
Thu, 17 Jul 2008 17:21:02 GMT

First tidal power turbine gets plugged in - guardian.co.uk


First tidal power turbine gets plugged in
guardian.co.uk, UK - Jul 17, 2008
SeaGen was designed and built by the Bristol-based tidal energy company Marine Current Turbines (MCT), which also installed the test device at Strangford in ...
Thu, 17 Jul 2008 16:22:35 GMT

SeaGen flows into grid for first time - EnergyCurrent


SeaGen flows into grid for first time
EnergyCurrent, TX - Jul 17, 2008
Located in Northern Ireland's Strangford Lough and developed by British tidal energy company, Marine Current Turbines (MCT) Ltd., the tidal current turbine, ...
Thu, 17 Jul 2008 13:18:38 GMT

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