Photo de stock - Pueblo, Colorado - The Comanche Generating Station, a coal-fired power plant owned by Xcel Energy. It costs the company $46. 32 per megawatt hour of electricity generated at Comanche, compared to $15. 86 at Xcel's four wind farms.

Photo de stock: Pueblo, Colorado - The Comanche Generating Station, a coal-fired power plant owned by Xcel Energy. It costs the company $46.

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