These periods are times when wind turbines are powered by hydrogen gas.

氢气曾用来为风力涡轮机提供动能。

The heated fluid, which reaches 750 degrees Fahrenheit, produces steam to power a turbine.

液体受热，达到华氏750度，产生蒸汽，驱动涡轮机。

And it won't be long until water shoots through it...... powering turbines the size of houses.

水要不了多久 就将开始流过这里 为房屋大小的涡轮提供动力。

The steam can power turbines that generate electricity.

蒸汽可以为发电的涡轮机提供动力。

And then just a bit further north from there, in the Pentland Firth, we find the biggest wave power turbine being tested.

然后再往北一点，在彭特兰峡湾，我们发现了正在测试的最大的波浪能涡轮机。

Texas-based Quidnet Energy, for example, has developed a pumped storage system that forces water underground, holds it amid rock layers and releases it to power turbines.

例如，总部位于德克萨斯州的Quidnet Energy开发了一种抽水蓄能系统，将水注入地下，在岩层中储存，然后释放出来驱动涡轮机。

Then, when there's high demand for electricity, valves open, releasing the stored energy by letting water flow downhill to power 6 giant turbines that can generate 3 billion watts of power for 10 hours.

然后，当电力需求量大时，阀门打开，让水流下坡释放储存的能量，为 6 个巨型涡轮机提供动力，这些涡轮机可产生 30 亿瓦的电力，持续 10 小时。