在不到十年的时间里，单个发电站的发电能力就从几千瓦上升到了几兆瓦，其中许多是水力发电站。

The capacity of individual power stations, many of them hydro plants, rose from a few kilowatts to over a megawatt in less than a decade.

youdao

2007年，Whole Foods市场在康涅狄格州的一家超市里安装了200千瓦磷酸电池，该州的补贴为燃料电池系统成本的25%到40%。

In 2007, Whole Foods market installed a 200-kilowatt phosphoric acid cell in a supermarket in Connecticut, where subsidies fund 25 to 40 percent of the cost of a fuel-cell system.

youdao

在一年中，平均每个家庭耗费的燃气大约为2万个字(千瓦小时)。

In a year, the average home USES about 20, 000 units (kilowatt hours) of energy via gas use.

youdao