Paul Lachine

Vítr ve větru

KODAŇ – Snaha zastavit globální oteplování podnítila na celém světě silné nutkání rozvíjet obnovitelnou energii. V důsledku toho se za posledních deset let desetinásobně zvýšilo využívání větrných turbín, neboť větrná energie bývá často vychvalována jako nejefektivnější zelená příležitost. Podle Connie Hedegaardové, komisařky Evropské unie pro otázky klimatu, by „lidé měli věřit, že [větrná energie] je velmi, velmi levná“.

Ve skutečnosti je toto tvrzení vysoce problematické. Větrná energie je sice levnější než jiné, neefektivnější obnovitelné zdroje, jako jsou solární energie, přílivová energie a etanol, ale ani zdaleka není konkurenceschopná. Kdyby byla, nemuseli bychom vynakládat značné částky na její dotování.

Například ve Velké Británii je vítr i nadále podstatně nákladnější než jiné energetické zdroje. Vycházíme-li ze zprávy o nákladech výroby elektrické energie ve Velké Británii za rok 2010 a měříme-li náklady na výrobu jedné kilowatthodiny energie, pak je vítr stále o 20-200% dražší než nejlevnější varianty založené na fosilních palivech. A i tento údaj je ještě značně podhodnocený.

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