Tidal power - Revision history

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energy>Ethan.boechler at 20:23, 10 September 2021

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	[[Category:Done ~~2020~~-02-29]]		[[Category:Done 2021-01-31]]
	<onlyinclude>'''Tidal power''' harnesses the [[energy]] from ~~the~~ [[tidal force]] ~~and wave action~~ in order to [[electricity generation\|generate electricity]]. Unlike other [[primary energy flow]]s, it is a predictable source of energy because tides occur at expected times.</onlyinclude><ref name =Ref5>EMEC. (Accessed July 30, 2015). ''Marine Energy'' [Online], Available: http://www.emec.org.uk/marine-energy</ref> This predictability has an advantage over [[wind power\|wind]] and [[solar power]] since the sun may or may not shine on a particular day and the wind doesn't always blow the expected amount. Tidal power is still not a [[dispatchable source of electricity]] as it is available when nature provides it, not necessarily when it is needed.<ref name =Ref7>Vision of Earth. (Accessed July 30, 2015). ''How can renewables deliver dispatchable power on demand?'' Available: http://www.visionofearth.org/industry/renewable-energy/renewable-energy-review/how-can-renewables-deliver-dispatchable-power-on-demand</ref>		[[Category:Translated to French]]
			[[fr:Énergie marémotrice]]
			<onlyinclude>'''Tidal power''' harnesses the [[energy]] from water moving from [[tidal force]]s in order to [[electricity generation\|generate electricity]]. Unlike other [[primary energy flow]]s, it is a predictable source of energy because tides occur at expected times.</onlyinclude><ref name =Ref5>EMEC. (Accessed July 30, 2015). ''Marine Energy'' [Online], Available: http://www.emec.org.uk/marine-energy</ref> This predictability has an advantage over [[wind power\|wind]] and [[solar power]] since the sun may or may not shine on a particular day and the wind doesn't always blow the expected amount. Tidal power is still not a [[dispatchable source of electricity]] as it is available when nature provides it, not necessarily when it is needed.<ref name =Ref7>Vision of Earth. (Accessed July 30, 2015). ''How can renewables deliver dispatchable power on demand?'' Available: http://www.visionofearth.org/industry/renewable-energy/renewable-energy-review/how-can-renewables-deliver-dispatchable-power-on-demand</ref>

	Tidal power is not a widely used energy resource at the moment because its costs outweigh the advantages. Previously only very specialized locations were able to support these technologies. However, recent improvements are making tidal power much more cost effective and adaptable to a wider range of locations. If support for tidal power continues to increase the industry will likely grow.<ref name ="Ref8">Energy BC. (Accessed July 30, 2015). ''Tidal Power'' [Online], Available: http://www.energybc.ca/profiles/tidal.html</ref>		Tidal power is not a widely used energy resource at the moment because its costs outweigh the advantages. Previously only very specialized locations were able to support these technologies. However, recent improvements are making tidal power much more cost effective and adaptable to a wider range of locations. If support for tidal power continues to increase the industry will likely grow.<ref name ="Ref8">Energy BC. (Accessed July 30, 2015). ''Tidal Power'' [Online], Available: http://www.energybc.ca/profiles/tidal.html</ref>

	[[File:Tidal countours.jpg\|800px\|thumb\|center\|Figure 1: Display of tidal intensity across Earth (Pacific Ocean in the centre) the darker colour means more intense tidal fluctuations and more suitable locations for tidal power facilities.<ref>Wikimedia Commons [Online], Available: https://commons.wikimedia.org/wiki/File:M2_tidal_constituent.jpg#/media/File:M2_tidal_constituent.jpg</ref>]]		[[File:Tidal countours.jpg\|800px\|thumb\|center\|Figure 1: Display of tidal intensity across Earth (Pacific Ocean in the centre) the darker colour means more intense tidal fluctuations and more suitable locations for tidal power facilities.<ref>Wikimedia Commons [Online], Available: https://commons.wikimedia.org/wiki/File:M2_tidal_constituent.jpg#/media/File:M2_tidal_constituent.jpg</ref>]]


	==Tidal power generation==		==Tidal power generation==

Jmdonev: 1 revision imported

2020-04-28T15:32:42Z

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energy>Jmdonev at 22:48, 10 April 2020

2020-04-10T22:48:38Z

← Older revision		Revision as of 22:48, 10 April 2020
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	[[Category:Done ~~2017~~-07-01]]		[[Category:Done 2020-02-29]]
	<onlyinclude>'''Tidal power''' harnesses the [[energy]] from the [[tidal force]] and wave action in order to [[electricity generation\|generate electricity]]. Unlike other ~~energy~~ [[flow]]s, it is a predictable source of energy because tides occur at expected times.</onlyinclude><ref name =Ref5>EMEC. (Accessed July 30, 2015). ''Marine Energy'' [Online], Available: http://www.emec.org.uk/marine-energy</ref> This predictability has an advantage over [[wind power\|wind]] and [[solar power]] since the sun may or may not shine on a particular day and the wind doesn't always blow the expected amount. Tidal power is still not a [[dispatchable source of electricity]] as it is available when nature provides it, not necessarily when it is needed.<ref name =Ref7>Vision of Earth. (Accessed July 30, 2015). ''How can renewables deliver dispatchable power on demand?'' Available: http://www.visionofearth.org/industry/renewable-energy/renewable-energy-review/how-can-renewables-deliver-dispatchable-power-on-demand</ref>		<onlyinclude>'''Tidal power''' harnesses the [[energy]] from the [[tidal force]] and wave action in order to [[electricity generation\|generate electricity]]. Unlike other [[primary energy flow]]s, it is a predictable source of energy because tides occur at expected times.</onlyinclude><ref name =Ref5>EMEC. (Accessed July 30, 2015). ''Marine Energy'' [Online], Available: http://www.emec.org.uk/marine-energy</ref> This predictability has an advantage over [[wind power\|wind]] and [[solar power]] since the sun may or may not shine on a particular day and the wind doesn't always blow the expected amount. Tidal power is still not a [[dispatchable source of electricity]] as it is available when nature provides it, not necessarily when it is needed.<ref name =Ref7>Vision of Earth. (Accessed July 30, 2015). ''How can renewables deliver dispatchable power on demand?'' Available: http://www.visionofearth.org/industry/renewable-energy/renewable-energy-review/how-can-renewables-deliver-dispatchable-power-on-demand</ref>

	Tidal power is not a widely used energy resource at the moment because its costs outweigh the advantages. Previously only very specialized locations were able to support these technologies. However, recent improvements are making tidal power much more cost effective and adaptable to a wider range of locations. If support for tidal power continues to increase the industry will likely grow.<ref name ="Ref8">Energy BC. (Accessed July 30, 2015). ''Tidal Power'' [Online], Available: http://www.energybc.ca/profiles/tidal.html</ref>		Tidal power is not a widely used energy resource at the moment because its costs outweigh the advantages. Previously only very specialized locations were able to support these technologies. However, recent improvements are making tidal power much more cost effective and adaptable to a wider range of locations. If support for tidal power continues to increase the industry will likely grow.<ref name ="Ref8">Energy BC. (Accessed July 30, 2015). ''Tidal Power'' [Online], Available: http://www.energybc.ca/profiles/tidal.html</ref>

Jmdonev: 1 revision imported

2017-08-29T01:47:31Z

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Jmdonev at 22:23, 17 August 2017

2017-08-17T22:23:07Z

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	[[Category:Done ~~2015~~-07-24]]		[[Category:Done 2017-07-01]]
	<onlyinclude>'''Tidal power''' harnesses the [[energy]] from the [[tidal force]] and wave action in order to [[electricity generation\|generate electricity]]. Unlike other energy [[flow]]s, it is a predictable source of energy because tides occur at expected times.</onlyinclude><ref name =Ref5>EMEC. (Accessed July 30, 2015). ''Marine Energy'' [Online], Available: http://www.emec.org.uk/marine-energy</ref> This predictability has an advantage over [[wind power\|wind]] and [[solar power]] since the sun may or may not shine on a particular day and the wind doesn't always blow the expected amount. Tidal power is still not a [[dispatchable source of electricity]] as it is available when nature provides it, not necessarily when it is needed.<ref name =Ref7>Vision of Earth. (Accessed July 30, 2015). ''How can renewables deliver dispatchable power on demand?'' Available: http://www.visionofearth.org/industry/renewable-energy/renewable-energy-review/how-can-renewables-deliver-dispatchable-power-on-demand</ref>		<onlyinclude>'''Tidal power''' harnesses the [[energy]] from the [[tidal force]] and wave action in order to [[electricity generation\|generate electricity]]. Unlike other energy [[flow]]s, it is a predictable source of energy because tides occur at expected times.</onlyinclude><ref name =Ref5>EMEC. (Accessed July 30, 2015). ''Marine Energy'' [Online], Available: http://www.emec.org.uk/marine-energy</ref> This predictability has an advantage over [[wind power\|wind]] and [[solar power]] since the sun may or may not shine on a particular day and the wind doesn't always blow the expected amount. Tidal power is still not a [[dispatchable source of electricity]] as it is available when nature provides it, not necessarily when it is needed.<ref name =Ref7>Vision of Earth. (Accessed July 30, 2015). ''How can renewables deliver dispatchable power on demand?'' Available: http://www.visionofearth.org/industry/renewable-energy/renewable-energy-review/how-can-renewables-deliver-dispatchable-power-on-demand</ref>

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	===Environmental Impact===		===Environmental Impact===
	The environmental impact of tidal power systems could be significant. Unfortunately, in areas where any tidal power stations might be built happen to be some of the most densely populated ecosystems in the ocean. Changes in water levels and flow rates might harm plant and animal life and alter the sea water composition. Also, turbines needed to generate power move quickly, and if protection is not built in, marine animals can be caught in the blades. If aquatic life drops in the area, birds typically found there might migrate to different places. An entire ecosystem could be significantly altered. Further research is needed in order to determine just how large of an impact such stations might have.<ref name=Ref6~~>European Ocean Energy. (Accessed July 30, 2015). ''Industry Vision Paper''. [Online], Available: http:~~/~~/www.oceanenergy-europe.eu/images/Publications/European_Ocean_Energy-Industry_Vision_Paper_2013.pdf</ref~~>		The environmental impact of tidal power systems could be significant. Unfortunately, in areas where any tidal power stations might be built happen to be some of the most densely populated ecosystems in the ocean. Changes in water levels and flow rates might harm plant and animal life and alter the sea water composition. Also, turbines needed to generate power move quickly, and if protection is not built in, marine animals can be caught in the blades. If aquatic life drops in the area, birds typically found there might migrate to different places. An entire ecosystem could be significantly altered. Further research is needed in order to determine just how large of an impact such stations might have.<ref name=Ref6/>

	===High costs===		===High costs===

J.williams: 1 revision imported

2015-08-26T21:31:44Z

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J.williams at 17:00, 12 August 2015

2015-08-12T17:00:19Z

New page

[[Category:Done 2015-07-24]]
<onlyinclude>'''Tidal power''' harnesses the [[energy]] from the [[tidal force]] and wave action in order to [[electricity generation|generate electricity]]. Unlike other energy [[flow]]s, it is a predictable source of energy because tides occur at expected times.</onlyinclude><ref name =Ref5>EMEC. (Accessed July 30, 2015). ''Marine Energy'' [Online], Available: http://www.emec.org.uk/marine-energy</ref> This predictability has an advantage over [[wind power|wind]] and [[solar power]] since the sun may or may not shine on a particular day and the wind doesn't always blow the expected amount. Tidal power is still not a [[dispatchable source of electricity]] as it is available when nature provides it, not necessarily when it is needed.<ref name =Ref7>Vision of Earth. (Accessed July 30, 2015). ''How can renewables deliver dispatchable power on demand?'' Available: http://www.visionofearth.org/industry/renewable-energy/renewable-energy-review/how-can-renewables-deliver-dispatchable-power-on-demand</ref>

Tidal power is not a widely used energy resource at the moment because its costs outweigh the advantages. Previously only very specialized locations were able to support these technologies. However, recent improvements are making tidal power much more cost effective and adaptable to a wider range of locations. If support for tidal power continues to increase the industry will likely grow.<ref name ="Ref8">Energy BC. (Accessed July 30, 2015). ''Tidal Power'' [Online], Available: http://www.energybc.ca/profiles/tidal.html</ref>

[[File:Tidal countours.jpg|800px|thumb|center|Figure 1: Display of tidal intensity across Earth (Pacific Ocean in the centre) the darker colour means more intense tidal fluctuations and more suitable locations for tidal power facilities.<ref>Wikimedia Commons [Online], Available: https://commons.wikimedia.org/wiki/File:M2_tidal_constituent.jpg#/media/File:M2_tidal_constituent.jpg</ref>]]

==Tidal power generation==
There are three basic methods used for generating [[power]] from tides, these methods are constantly being researched, adapted and improved. However, all three use the basic principle of converting the [[mechanical energy]] of tidal movements into [[electricity]]. Locations where tidal power generation is available have geographic features that restrict what types of tidal generators can be used, which makes it necessary to have a range of systems available.<ref name =Ref6>EMEC. (Accessed July 30, 2015). ''Tidal Devices'' [Online], Available: http://www.emec.org.uk/marine-energy/tidal-devices</ref>

===Dynamic tidal power===
''Main article: [[Dynamic tidal power]]''

Dynamic tidal power is a technology that uses the difference between the [[potential energy]] and [[kinetic energy]] of tides. Long dams are built from coasts straight out into the sea or ocean - meaning that the tides in the areas where these systems can be implemented usually flow parallel to their respective coasts.

This technology is still in the experimental phase and requires a full scale demonstration plant to fully prove feasibility.

===Tidal stream generator===
''Main article: [[Tidal stream generator]]''

Tidal stream generators make use of moving water to power turbines - similar to the way [[wind turbine]]s use [[wind]] to create power. There are several variations of tidal stream generators all of which use very similar processes but have different designs and can be found on the [[tidal stream generator]] page.

===Tidal barrage===
''Main article: [[Tidal barrage]]''

Tidal barrage systems work similarly to hydroelectric dams, they capture the [[energy]] from water moving in and out of a bay or river due to [[tidal force]]s. Again, there are several variations of this method that all use a similar process and are further discussed in the main article.

==Benefits of tidal power==
Tidal power offers a renewable resource to areas that currently rely heavily on imports for their energy. Building tidal power generation plants would boost local economies and create many jobs. Furthermore, tidal power generation - if built properly - would significantly reduce the [[CO2 footprint]] of local areas.<ref name =Ref8/><ref name =Ref9>"Tidal Energy" internet: http://www.energybc.ca/cache/tidal/www.ems.psu.edu/_elsworth/courses/cause2003/finalprojects/canutepaper.pdf [June 05, 2014]</ref>

==Drawbacks of tidal power==

===Environmental Impact===
The environmental impact of tidal power systems could be significant. Unfortunately, in areas where any tidal power stations might be built happen to be some of the most densely populated ecosystems in the ocean. Changes in water levels and flow rates might harm plant and animal life and alter the sea water composition. Also, turbines needed to generate power move quickly, and if protection is not built in, marine animals can be caught in the blades. If aquatic life drops in the area, birds typically found there might migrate to different places. An entire ecosystem could be significantly altered. Further research is needed in order to determine just how large of an impact such stations might have.<ref name=Ref6>European Ocean Energy. (Accessed July 30, 2015). ''Industry Vision Paper''. [Online], Available: http://www.oceanenergy-europe.eu/images/Publications/European_Ocean_Energy-Industry_Vision_Paper_2013.pdf</ref>

===High costs===
The methods used to harness the energy from tides tend to be quite expensive, not only to build but also to maintain. Depending on the specific type of tidal power, the cost per MW can be over double the cost of similar sustainable energy resources such as wind and solar.<ref name=Ref10>Boronowski S.1, Monahan K.2 and van Kooten G.C.3, "The Economics of Tidal Stream Power", University of Victoria, Department of Economics, Victoria, Canada</ref> Therefore, a significant improvement in technology is required in order to make tidal power more feasible. However, judging from the amount that such technologies have improved in such a short period of time (tidal power has only been around for the past few decades), costs will continue to fall, though by how much still remains a question.

==The Bay of Fundy==
The Bay of Fundy, located on the east coast of Canada between Nova Scotia and New Brunswick, is home to the highest tidal fluctuations in the world. An incredible amount of water flows into the bay during high tide, in fact more than four times the flow of all the world’s freshwater rivers - up to 160 billion [[tonne]]s - flows in an out of the bay in one tidal cycle. Having such quantities of water flowing in and out on a predictable schedule give the Bay of Fundy enormous potential for the development of tidal energy projects. Currently the Fundy Ocean Research Center for Energy (FORCE) is the leading research center for tidal energy in the Bay of Fundy also acting as host and watchdog to researchers developing tidal technology. Below is a video of the intense tidal fluctuations found in the Bay of Fundy.<ref name=Ref12>NR Canada. (Accessed July 30, 2015). ''Tidal Energy Project in the Bay of Fundy'' [Online], Available: internet:http://www.nrcan.gc.ca/energy/funding/current-funding-programs/cef/4955</ref>

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==References==
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