You do not have permission to edit this page, for the following reasons:

This IP address has been blocked from editing Wikipedia.
This does not affect your ability to read Wikipedia pages.
Most people who see this message have done nothing wrong. Some kinds of blocks restrict editing from specific service providers or telecom companies in response to recent abuse or vandalism, and can sometimes affect other users who are unrelated to that abuse. Review the information below for assistance if you do not believe that you have done anything wrong.

The IP address or range 44.201.0.0/16 has been blocked (disabled) by ‪ST47‬ for the following reason(s):

The IP address that you are currently using has been blocked because it is believed to be a web host provider. To prevent abuse, web hosts may be blocked from editing Wikipedia.
You will not be able to edit Wikipedia using a web host provider because it hides your IP address, much like a proxy or VPN.
We recommend that you attempt to use another connection to edit. For example, if you use a proxy or VPN to connect to the internet, turn it off when editing Wikipedia. If you edit using a mobile connection, try using a Wi-Fi connection, and vice versa. If you are using a corporate internet connection, switch to a different Wi-Fi network. If you have a Wikipedia account, please log in.
If you do not have any other way to edit Wikipedia, you will need to request an IP block exemption.

How to appeal if you are confident that your connection does not use a web host's IP address:
If you are confident that you are not using a web host, you may appeal this block by adding the following text on your talk page: ((unblock|reason=Caught by a web host block but this host or IP is not a web host. My IP address is _______. Place any further information here. ~~~~)). You must fill in the blank with your IP address for this block to be investigated. Your IP address can be determined here. Alternatively, if you wish to keep your IP address private you can use the unblock ticket request system. There are several reasons you might be editing using the IP address of a web host (such as if you are using VPN software or a business network); please use this method of appeal only if you think your IP address is in fact not a web host.

Administrators: The IP block exemption user right should only be applied to allow users to edit using web host in exceptional circumstances, and they should usually be directed to the functionaries team via email. If you intend to give the IPBE user right, a CheckUser needs to take a look at the account. This can be requested most easily at SPI Quick Checkuser Requests. Unblocking an IP or IP range with this template is highly discouraged without at least contacting the blocking administrator.

This block will expire on 23:54, 31 July 2024.

Even when blocked, you will usually still be able to edit your user talk page, as well as email administrators and other editors.

For information on how to proceed, please read the FAQ for blocked users and the guideline on block appeals. The guide to appealing blocks may also be helpful.

Other useful links: Blocking policy · Help:I have been blocked
Your IP address is in a range that has been blocked on all Wikimedia Foundation wikis. The block was made by ‪AntiCompositeNumber‬. The reason given is Open proxy/Webhost: Visit the FAQ if you are affected .
- Start of block: 13:55, 18 August 2022
- Expiry of block: 13:55, 18 April 2025
Your current IP address is 44.201.28.123. The blocked range is 44.201.0.0/16. Please include all above details in any queries you make. If you believe you were blocked by mistake, you can find additional information and instructions in the No open proxies global policy. Otherwise, to discuss the block please post a request for review on Meta-Wiki. You could also send an email to the stewards VRT queue at stewards@wikimedia.org including all above details.

You can view and copy the source of this page:

((Use dmy dates|date=January 2024))
((More citations needed|date=February 2014))
((Infobox dam
| name = Rance Tidal Power Station
| name_official = Usine marémotrice de la Rance
| image = Barrage de la Rance.jpg
| image_size = 
| image_caption = Aerial photograph of the Rance Tidal Power Station
| image_alt = 
| location_map = France
| location_map_size = 
| location_map_caption = 
| coordinates = ((coord|48|37|05|N|02|01|24|W|type:landmark_region:FR|display=inline,title))
| country = [[France]]
| location = [[Brittany]]
| status = Operational
| construction_began = 26 July 1963
| opening = 26 November 1966
| demolished = 
| cost = [[French franc|₣]]620 million
| owner = [[Électricité de France]]
| dam_type = B
| dam_length = ((Convert|700|m|ft|abbr=on))
| dam_height = 
| dam_width_crest = 
| dam_width_base = 
| dam_volume = 
| dam_crosses = 
| spillway_count = 
| spillway_type = 
| spillway_capacity = 
| res_name = 
| res_capacity_total = 
| res_catchment = 
| res_surface = 
| res_max_depth = 
| res_tidal_range = ((Convert|8|m|ft|0|abbr=on))
| plant_operator = 
| plant_commission = 
| plant_decommission = 
| plant_type = T
| plant_turbines = 24
| plant_capacity = 240 [[Megawatt|MW]]
| plant_capacity_factor = 28%
| plant_annual_gen = 500 [[GWh]]
| website = 
| extra = 
))

The '''Rance Tidal Power Station''' is a [[tidal power]] station located on the [[estuary]] of the [[Rance River]] in [[Brittany]], France.

Opened in 1966 as the world's first<ref>((cite web|title= Wyre Tidal Energy|url= http://www.wyretidalenergy.com/tidal-barrage/la-rance-barrage|url-status= dead|archiveurl= https://web.archive.org/web/20150204062904/http://www.wyretidalenergy.com/tidal-barrage/la-rance-barrage|archivedate= 4 February 2015|df= dmy-all))</ref> tidal power station, it is currently operated by [[Électricité de France]] and was for 45 years the largest tidal power station in the world by installed capacity until the [[South Korea]]n [[Sihwa Lake Tidal Power Station]] surpassed it in 2011.<ref name="nautilusSihwa">((cite web |url=http://nautilus.org/napsnet/napsnet-special-reports/south-koreas-plans-for-tidal-power-when-a-green-solution-creates-more-problems/ |title=South Korea's Plans for Tidal Power: When a "Green" Solution Creates More Problems |date=29 November 2011 |accessdate=27 May 2016 |format=PDF |work=report |publisher=Nautilus Institute |author1=Yekang Ko |author2=Derek K. Schubert ))</ref><ref name="PowerTech">((cite web |url=http://www.power-technology.com/features/featuretidal-giants---the-worlds-five-biggest-tidal-power-plants-4211218/ |title=Tidal giants – the world's five biggest tidal power plants |date=11 April 2014 |accessdate=27 May 2016 |format=PDF |work=report |publisher=power-technology.com))</ref>((Unreliable source?|reason=domain on WP:BLACKLIST|date=June 2016))

Its 24 [[turbines]] reach peak output at 240 [[watt|megawatt]]s (MW) and average 57&nbsp;MW, a [[capacity factor]] of approximately 24%. At an annual output of approximately 500&nbsp;[[GWh]] (491&nbsp;GWh in 2009, 523&nbsp;GWh in 2010), it supplies 0.12% of the [[Réseau de Transport d'Électricité#Demand and trade|power demand of France]]. The power density is of the order of 2.6&nbsp;kW/m<sup>2</sup>. The cost of electricity production is estimated at ((Currency|0.12|code=EUR))/kWh.

The [[Tidal barrage|barrage]] is ((convert|750|m|0|abbr=on)) long, from Brebis point in the west to Briantais point in the east. The power plant portion of the dam is ((convert|332.5|m|0|abbr=on)) long and the tidal basin measures ((convert|22.5|km2|0|abbr=on)).

== History ==
[[File:Coupebarrage Rance.jpg|left|thumb|Scale model of the power station]]
[[File:Rance tidal power plant.JPG|left|thumb|The power plant]]
[[File:Rance tidal power station.jpg|left|thumb|The road on the power station]]
[[File:Rance Tidal Power Station 2.webm|thumb|Video Rance Tidal Power Station]]

An early attempt to build a tidal power plant was made at [[Aber Wrac'h]] in the [[Finistère]] in 1925, but due to insufficient finance, it was abandoned in 1930. Plans for this plant served as the draft for follow-on work. Use of tidal energy is not an entirely new concept, since [[Tide mill|tidal mills]] have long existed in areas exposed to [[tide]]s, particularly along the [[Rance River|Rance]].

The idea of constructing a tidal power plant on the Rance dates to Gerard Boisnoer in 1921. The site was attractive because of the wide average-range between low and high tide levels, ((convert|8|m|ft|1|abbr=on)) with a maximum [[perigean spring tide]] range of ((convert|13.5|m|ft|1|abbr=on)). The first studies which envisaged a tidal plant on the Rance were done by the [[Society for the Study of Utilization of the Tides]] in 1943. Nevertheless, work did not actually commence until 1961. [[Albert Caquot]], the visionary engineer, was instrumental in the construction of the dam, designing an enclosure in order to protect the construction site from the ocean tides and the strong streams. Construction necessitated draining the area where the plant was to be built, which required construction of two dams which took two years. Construction of the plant commenced on 20&nbsp;July 1963, while the Rance was entirely blocked by the two dams.

Construction took three years and was completed in 1966. [[Charles de Gaulle]], then [[President of France]], inaugurated the plant on 26 November of the same year. Inauguration of the road crossing the plant took place on 1&nbsp;July 1967, and connection of the plant to the [[French National Power Grid]] was carried out on 4&nbsp;December 1967. In total, the plant cost [[French franc|₣]]620 million (approximately [[Euro|€]]94.5 million). It took almost 20 years for the La Rance to pay for itself.

== Assessments ==
In spite of the high development cost of the project, the costs have now been recovered, and electricity production costs are lower than that of [[nuclear power]] generation (1.8 ¢/kWh versus 2.5 ¢/kWh for nuclear).<ref>http://france.edf.com/html/en/decouvertes/voyage/usine/bilan/usine_bilan_d.html ((dead link|date=August 2021))</ref> However, the [[capacity factor]] of the plant is 28%, lower than 85–90% for nuclear power.

=== Environmental impact ===
The barrage has caused progressive silting of the Rance ecosystem. [[Sand-eel]]s and [[plaice]] have disappeared, though [[European seabass|sea bass]] and [[cuttlefish]] have returned to the river. By definition, tides still flow in the estuary and the operator, [[Électricité de France|EDF]], endeavours to adjust their level to minimize the biological impact.

=== Tourist attraction ===
The facility attracted approximately 40,000 visitors in 2011. A lock for navigation at the west end of the dam allows the passage of 1,600-tonne vessels between the [[English Channel]] and the [[Rance River|Rance]]. Departmental road 168 crosses the dam and allows vehicles to travel between [[Dinard]] and [[Saint-Malo]]. There is a [[drawbridge]] where the road crosses the lock which is raised to allow larger vessels to pass. The Rance estuary is the first part of the inland waterway from the English Channel to the Bay of Biscay via the Canal d'Ille-et-Rance and the river Vilaine.<ref>((Cite book|title=Inland Waterways of France|last=Edwards-May|first=David|publisher=Imray|year=2010|isbn=978-1-846230-14-1|location=St Ives, Cambs., UK|pages=90–94))</ref>

== See also ==
((stack|((Portal|France|Water|Renewable energy))))
* [[List of tidal power stations]]
* [[List of largest power stations in the world]]
* [[Renewable energy in France]]

==References==
((reflist|33em))

== External links ==
((Commons category|Rance Tidal Power Station))
* [http://www.esru.strath.ac.uk/EandE/Web_sites/01-02/RE_info/tidal1.htm University of Strathclyde Rance Project (case study)] ((Webarchive|url=https://web.archive.org/web/20090423032017/http://www.esru.strath.ac.uk/EandE/Web_sites/01-02/RE_info/tidal1.htm |date=23 April 2009 ))
* [https://web.archive.org/web/20120306123830/http://businesses.edf.com/generation/hydropower-and-renewable-energy/marine-energies/key-figures-43778.html EDF website]

[[Category:Energy infrastructure completed in 1963]]
[[Category:Tidal power stations in France]]
[[Category:Coastal construction]]
[[Category:Buildings and structures in Ille-et-Vilaine]]
[[Category:Saint-Malo]]
[[Category:Tidal barrages]]
[[Category:Électricité de France]]
[[Category:Tourist attractions in Ille-et-Vilaine]]
[[Category:Articles containing video clips]]
[[Category:1963 establishments in France]]
[[Category:20th-century architecture in France]]

Pages transcluded onto the current version of this page (help):

Rance Tidal Power Station (edit)
Template:Ambox (view source) (template editor protected)
Template:Both (view source) (template editor protected)
Template:Category handler (view source) (protected)
Template:Cite book (view source) (protected)
Template:Cite web (view source) (protected)
Template:Commons category (view source) (template editor protected)
Template:Convert (view source) (template editor protected)
Template:Coord (view source) (protected)
Template:Currency (view source) (extended confirmed protected)
Template:DMCA (view source) (template editor protected)
Template:Dated maintenance category (view source) (template editor protected)
Template:Dated maintenance category (articles) (view source) (template editor protected)
Template:Dead link (view source) (template editor protected)
Template:Delink (view source) (template editor protected)
Template:FULLROOTPAGENAME (view source) (template editor protected)
Template:Find sources mainspace (view source) (template editor protected)
Template:Fix (view source) (protected)
Template:Fix/category (view source) (template editor protected)
Template:Infobox (view source) (template editor protected)
Template:Infobox dam (view source) (template editor protected)
Template:Location map (view source) (template editor protected)
Template:Main other (view source) (protected)
Template:More citations needed (view source) (template editor protected)
Template:Ns has subpages (view source) (protected)
Template:Pagetype (view source) (protected)
Template:Plainlist/styles.css (view source) (protected)
Template:Portal (view source) (template editor protected)
Template:Reflist (view source) (protected)
Template:Reflist/styles.css (view source) (protected)
Template:Replace (view source) (protected)
Template:SDcat (view source) (template editor protected)
Template:Short description (view source) (protected)
Template:Short description/lowercasecheck (view source) (protected)
Template:Side box (view source) (template editor protected)
Template:Sister project (view source) (template editor protected)
Template:Stack (view source) (template editor protected)
Template:Stack/styles.css (view source) (template editor protected)
Template:Template other (view source) (protected)
Template:Unreliable source? (view source) (template editor protected)
Template:Use dmy dates (view source) (template editor protected)
Template:Webarchive (view source) (template editor protected)
Template:Yesno (view source) (protected)
Module:Arguments (view source) (protected)
Module:Category handler (view source) (protected)
Module:Category handler/blacklist (view source) (protected)
Module:Category handler/config (view source) (protected)
Module:Category handler/data (view source) (protected)
Module:Category handler/shared (view source) (protected)
Module:Check for unknown parameters (view source) (protected)
Module:Citation/CS1 (view source) (protected)
Module:Citation/CS1/COinS (view source) (protected)
Module:Citation/CS1/Configuration (view source) (protected)
Module:Citation/CS1/Date validation (view source) (protected)
Module:Citation/CS1/Identifiers (view source) (protected)
Module:Citation/CS1/Utilities (view source) (protected)
Module:Citation/CS1/Whitelist (view source) (protected)
Module:Citation/CS1/styles.css (view source) (protected)
Module:Convert (view source) (template editor protected)
Module:Convert/data (view source) (template editor protected)
Module:Convert/text (view source) (template editor protected)
Module:Coordinates (view source) (protected)
Module:Coordinates/styles.css (view source) (protected)
Module:Currency (view source) (extended confirmed protected)
Module:Currency/Presentation (view source) (extended confirmed protected)
Module:Delink (view source) (template editor protected)
Module:Disambiguation/templates (view source) (protected)
Module:Find sources (view source) (template editor protected)
Module:Find sources/config (view source) (template editor protected)
Module:Find sources/links (view source) (template editor protected)
Module:Find sources/templates/Find sources mainspace (view source) (template editor protected)
Module:Infobox (view source) (template editor protected)
Module:Infobox/styles.css (view source) (template editor protected)
Module:InfoboxImage (view source) (template editor protected)
Module:Is instance (view source) (template editor protected)
Module:Location map (view source) (template editor protected)
Module:Location map/data/France (view source) (template editor protected)
Module:Location map/styles.css (view source) (template editor protected)
Module:Math (view source) (protected)
Module:Message box (view source) (protected)
Module:Message box/ambox.css (view source) (protected)
Module:Message box/configuration (view source) (protected)
Module:Namespace detect/config (view source) (protected)
Module:Namespace detect/data (view source) (protected)
Module:Ns has subpages (view source) (template editor protected)
Module:Pagetype (view source) (protected)
Module:Pagetype/config (view source) (protected)
Module:Pagetype/disambiguation (view source) (template editor protected)
Module:Pagetype/setindex (view source) (template editor protected)
Module:Pagetype/softredirect (view source) (template editor protected)
Module:Plain text (view source) (template editor protected)
Module:Portal (view source) (template editor protected)
Module:Portal/images/f (view source) (template editor protected)
Module:Portal/images/r (view source) (template editor protected)
Module:Portal/images/w (view source) (template editor protected)
Module:Portal/styles.css (view source) (template editor protected)
Module:SDcat (view source) (template editor protected)
Module:Settlement short description (view source) (template editor protected)
Module:Side box (view source) (template editor protected)
Module:Side box/styles.css (view source) (template editor protected)
Module:String (view source) (protected)
Module:TableTools (view source) (protected)
Module:Type in location (view source) (template editor protected)
Module:Unsubst (view source) (protected)
Module:Webarchive (view source) (template editor protected)
Module:Webarchive/data (view source) (template editor protected)
Module:WikidataIB (view source) (template editor protected)
Module:WikidataIB/nolinks (view source) (template editor protected)
Module:WikidataIB/titleformats (view source) (template editor protected)
Module:Wikitext Parsing (view source) (template editor protected)
Module:Yesno (view source) (protected)

Return to Rance Tidal Power Station.

Retrieved from "https://en.wikipedia.org/wiki/Rance_Tidal_Power_Station"