Required for the environment: white light energy-saving lamps, fluorescent lamps or daytime normal light.

所需环境：白色光线节能灯、日光灯或者白天正常光线。

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Enough sunlight bathes Earth's daytime half in an hour to meet all human energy needs for a year.

照射地球半小时的阳光就足够让全人类用上一年。

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These would draw energy from the grid overnight, then be used to reduce peak daytime demand for power.

ECONOMIST: Japan's eco-industrial policy: A cloud with a green lining | The

He dreams of building gigawatt-size plants, of shipping solar thermal power to the cloudy Northeast and of using molten salt to store energy so thermal plants can power homes at night. (Nevada Solar One is only for daytime peak loads.) He envisions mirrors in space that can soak up sunlight 24 hours a day.

FORBES: Light And Heat