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USA - The Sonoma Calpine 3 geothermal power station of The Geysers in California

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Caption Two

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Philippines - Makban Geothermal Power Plant in Laguna

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Caption Four

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Turkey - A geothermal power plant is seen in the central Aegean province of Denizli

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Caption Six

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New Zealand - Ngatamariki plant in March 2013, 17 km north east of Taupo

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Caption 8