The costs of building in the sea are far higher than on land, of course. The price tag of up to $30 million per turbine is not just for the machine itself, but also for power cables, installation and many other items. To induce utilities to go forward, the government has had to guarantee them power prices of several times the market rate.

当然了，海上风电场的建设费用远高于陆地上的费用。每台涡轮机高达3000万美元的身价不仅仅是机器本身的价格，还包含了电缆费、安装费等好多项费用。为了吸引公用事业公司参与这样的项目，德国政府不得不答应它们把电价提高到市价的好几倍。

But, just as with earlier forms of renewable technology, the Germans expect the costs of harnessing offshore wind to drop sharply as the market grows over the coming decade. If that happens, the United States could be a big beneficiary. Studies have shown that offshore wind could supply as much as 15 to 20 percent of the power needed by East Coast cities, and construction is about to start on a handful of American projects.

不过，德国人预计在未来10年里，海风发电的成本可以随着市场规模的增长而大幅下降——就像早期的那些可再生能源发电技术那样。要是成本真降下来，美国也许会成为受益者。有研究表明，海风发电可为东海岸城市供应其所需电量的15%至20%；而且美国的几个项目很快就要开工建设了。

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