American Electric Power co. Inc. has installed 7 megawatts of the bus-sized batteries to ease congestion on its transmission lines, and it has an additional 4 megawatts under development.

美国电力公司安装了7兆瓦的电池，每个有公共汽车那么大，用来缓解输电线的超负荷现象，另外还有4兆瓦的电池还在研制中。

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I heard an apocryphal story about a Japanese firm that installed a turbine which needed electric power to keep it turning to save the face of its would-be-green owners.

我听说过一个杜撰的故事，一个日本公司安装了一台涡轮机，但却需要用电力来保持它运转来保护其“环保”的面子。

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Chimneys installed inside the rubbish dump allow even more methane gas to be extracted and transformed into electric power.

在这垃圾弃置场里面装设的烟囱，能够提炼更多的甲烷气体并转变成电力。

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The fastest-growing technology is grid-connected solar electric power, which saw a 53% increase in installed capacity during 2009.

BBC: Renewables can fuel society, say world climate advisers

Over the past three years, China has added 200 gigiwatts of coal-fired electric power capacity--equivalent to 20% of the entire installed capacity of the United States.

FORBES: Energy's Challenges