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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.

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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Renewable energy in Australia is “largely undeveloped” - Renewable Energy Focus National Post (blog) Renewable energy in Australia is “largely undeveloped” Renewable Energy Focus “Australia has a rich diversity of renewable energy resources (wind, solar, geothermal, hydro, wave, tidal, bioenergy) with low greenhouse gas emissions,” ... Delegated Legislation Committee - Renewables Obligation (Amendment) Order 2010DeHavilland (press release) (subscription) Gentle wind blows through NBTimes and Transcript all 184 news articles » Wed, 10 Mar 2010 11:52:07 GMT+00:00

Environmental Research Scientists: Marine Renewable Energy - Scientific American Environmental Research Scientists: Marine Renewable Energy Scientific American The waters round Scotland are estimated to hold 10% of the European wave and 25% of the European tidal energy resource. While marine renewable technologies ... and more » Mon, 08 Mar 2010 18:46:29 GMT+00:00

Tidal energy scheme is launched - BBC News BBC News Tidal energy scheme is launched BBC News Programme director Stuart Cowperthwaite said: "It is an ideal time to revisit and update the potential for tidal energy generation across the Duddon Estuary ... Study explores tidal-energy optionsThe Engineer Parsons Brinckerhoff to study tidal energy in CumbriaNew Civil Engineer all 3 news articles » Tue, 23 Feb 2010 13:52:54 GMT+00:00

Severn tidal energy not to be 'for electoral gain' - WalesOnline Severn tidal energy not to be 'for electoral gain' WalesOnline A consortium of academics and conservationists have urged the Government not to allow the generation of tidal energy in the Severn Estuary to become a ... Hain attacked for backing Severn Barrage before study completedWalesOnline all 2 news articles » Sat, 06 Mar 2010 11:10:10 GMT+00:00

RSPB fears Mersey tidal barrage could destroy wildlife at Halton - ic CheshireOnline RSPB fears Mersey tidal barrage could destroy wildlife at Halton ic CheshireOnline Tidal energy schemes on the Mersey are nothing new. In the late 1980s and early 1990s, there were plans to construct a large barrage but the proposal ... Would Mersey tidal barrage damage local wildlife?Crosby Herald all 4 news articles » Thu, 11 Mar 2010 01:06:14 GMT+00:00

'More investment needed for sustainable cheap energy' - energyhelpline.com 'More investment needed for sustainable cheap energy' energyhelpline.com Ms McCaffrey said that in order to reach the next stage of implementing tidal energy, £50 to £60 million pounds in mostly capital support is needed over the ... Skills investment needed for engineering jobsCareer Engineer Engineering opportunities 'likely in green economy'Brookson Energy suppliers reassured that oil and gas remain central to UK's needsenergyhelpline.com all 4 news articles » Thu, 11 Mar 2010 12:00:45 GMT+00:00

Wave, Tidal Energy May Power 1.4 Million UK Homes - BusinessWeek The Guardian Wave, Tidal Energy May Power 1.4 Million UK Homes BusinessWeek March 4 (Bloomberg) -- Wave and tidal energy may provide 2000 megawatts of power to the UK by 2020, enough for about 1.4 million homes, ... DECC launches project to assess marine power potentialBusiness Green RenewableUK launches Budget submissionNew Energy Focus Govt says UK wave and tidal capacity to reach 2GW by 2020Recharge Article Ant (press release) -Taylor Vinters (blog) all 23 news articles » Thu, 04 Mar 2010 12:36:32 GMT+00:00

Tiny electric car maker plans to save 4700 Toyota plant jobs - TheGreenCarWebsite.co.uk (blog) AutoWeek Tiny electric car maker plans to save 4700 Toyota plant jobs TheGreenCarWebsite.co.uk (blog) The firm claims the car can be independent of the grid too- sourcing all of its electricity from renewable sources only- solar, wind and tidal energy. ... Mysterious electric car firm bursts onto US market in job salvation pushBusiness Green Stealthy EV maker Aurica moves to save Bay Area auto plant, 4700 jobsVentureBeat Aurica Motors wants to keep NUMMI open to make electric carsAutoblog (blog) all 32 news articles » Fri, 12 Mar 2010 12:29:02 GMT+00:00

Strategic Environmental Assessment for Wave and Tidal Energy in UK - AZoCleantech UK Trade & Investment Strategic Environmental Assessment for Wave and Tidal Energy in UK AZoCleantech A complete Strategic Environmental Assessment (SEA) is to be carried by England and Wales for wave and tidal energy in their regions. ... Future of wave and tidalManufacturer.com More investment into wave and tidal power required, says RenewableUKBig Green Smile 'Investment needed' for green engineering jobsCareer Engineer UK Trade & Investment -New Civil Engineer all 7 news articles » Mon, 08 Mar 2010 12:12:16 GMT+00:00

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