Since its inception in 1991, the program has saved 100 terawatt-hours of electricity, or 2.5 percent of total U. S. electricity consumption in a year.

自1991年成立以来，该计划已在一年节省100兆瓦的电力，或2.5美国总耗电量的百分之小时。

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The IEA estimates that the yearly energy consumed from IT and consumer electronics is on pace to double by 2020 and triple by 2030 to 1,700 terawatt-hours.

国际能源机构估计，每年IT和消费类电子产品的能源消耗，正在按到2020年增加一倍和到2030年增加两倍的速度增长，将达到1,700兆兆瓦小时。

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A study released last week by the Federal Network Agency shows that energy generated with brown coal will remain virtually stabile, at 148 terawatt-hours, until 2022.

由联邦网络机构上周公布的一项研究表明，到2022年之前褐煤产生的能量将几乎保持稳定在148太瓦。时。

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This could store a lot of heat: as much as 4, 000 terawatt-hours, according to Dr Henkel.

ECONOMIST: Geothermal energy

About 10 percent of the power is lost with each conversion step, and that can add up to terawatt-hours of power that just goes to waste.

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The proposed cable would be capable of exporting around five terawatt-hours (or five billion kilowatt-hours) each year, which is enough to power around 1.25 million European households.

FORBES: World's Longest Underwater Electric Cable to Connect Iceland and Europe