For example, Valero is building windmills to power refineries, and Chevron is using solar power to make steam to extract tough-to-reach oil.

例如，瓦莱罗使用公司正在兴建风车为炼油厂提供能量，雪佛龙公司运用太阳能供热提炼难以萃取的石油。

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But regardless, after what has been a tough spell for Chinese solar tycoons and their investors, a curtain seemed to come down with the bankruptcy of the Wuxi Suntech Power arm of the emblematic Suntech Power Holdings, whose shares dipped to 42 cents in New York on Friday.

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Competing in a market rapidly with falling solar PV prices is tough for anybody, never mind a small company with novel technology.

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Controllers, worried about complicating an already tough situation, opted to delay deployment of solar arrays that provide electricity to onboard systems.

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