Intermittent energy source: Difference between revisions

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Because wind power is generated by large numbers of small generators, individual failures do not have large impacts on power grids. This feature of wind has been referred to as resiliency.<ref name='PEMBINAbrochure'>{{cite web|url=http://pubs.pembina.org/reports/renew-doable-brochure.pdf |title=renewable is doable A Smarter Energy Plan for Ontario (brochure version) |accessdate=2008-10-17 |date = August 2007|format=PDF |work=PEMBINA Institute }}</ref>

Wind power is affected by air temperature because colder air is more dense and therefore more effective at producing wind power. As a result, wind power is affected seasonally (more output in winter than summer) and by daily temperature variations. During the [[2006 North American heat wave|2006 California heat wave]] output from [[wind power in California]] significantly decreased to an average of 4% of capacity for seven days.<ref name='CaliHeatWave'>{{cite web |url=http://www.energypulse.net/centers/article/article_display.cfm?a_id=1332 |archive-url=https://web.archive.org/web/20070228001701/http://www.energypulse.net/centers/article/article_display.cfm?a_id=1332 |dead-url=yes |archive-date=2007-02-28 |title=Wind Generation's Performance during the July 2006 California Heat Storm |accessdate=2008-10-18 |last=Dixon |first=David |date=September 2006 |work=Energy Pulse }}{{Dead link|date=September 2018 |bot=InternetArchiveBot |fix-attempted=yes }}</ref> A similar result was seen during the [[2003 European heat wave]], when the output of wind power in France, Germany, and Spain fell below 10% during peak demand times.<ref>{{fr icon}} [[Minister of the Environment (France)|Ministère de l'Écologie]], du Développement et de l'Aménagement Durables. [http://www.industrie.gouv.fr/energie/electric/canicule2003.htm Notre système électrique à l'épreuve de la canicule].<br />[http://www.google.com/translate?u=http%3A%2F%2Fwww.industrie.gouv.fr%2Fenergie%2Felectric%2Fcanicule2003.htm&langpair=fr%7Cen&hl=en&ie=UTF8 Google translated version].</ref> Heat waves are partially caused by large amounts of [[solar power|solar radiation]].

[[File:Ontariowindfarmshourlyoutputover5days.gif|thumb|right|Five days of hourly output of five wind farms in Ontario]]