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There are many ways to make electricity.
發電有許多種方式。
But not all of those ways are good for the environment.
可是不是每一種方式都對環境有益。
Today, a lot of electricity is made by burning oil or coal.
今天，有許多電力都來自于燃燒石油或煤。
But that pollutes the environment.
可是這么做會污染環境。
Green energy is different. It comes from natural things like the sun.
綠色能源不一樣。這種能源來自大自然當中的東西，例如太陽。
In fact, it's called green energy because it doesn't hurt the environment.
實際上，這種能源之所以叫做綠色能源，原因就是這種能源不會傷害環境。
There are many dfferent kinds of green energy.
綠色能源有許多不同種類。
Solar energy comes from the sun.
太陽能來自太陽。
Special cells collect sunlight and change it into electricity.
特殊的電池收集陽光，轉變成電能。
Wind power comes directly from the wind.
風能直接來自于風力。
Another green energy comes from moving water.
另一種綠色能源則是來自于流動的水。
This is the most common kind of green energy.
這是最常見的綠色能源。
Around the world, this water power provides enough electricity for 28.3 million people.
在世界各地，水力產生的電能足夠供應兩千八百三十萬人使用。
Green energy is not perfect.
綠色能源并不是完美的。
Sometimes there isn't enough sun or wind when we need electricity.
有時候，我們需要電力的時候卻沒有足夠的陽光或風力。
Energy companies also need to spend a lot of money to produce green energy, too.
電力公司也必須花許多錢以生產綠色能源。
So while green energy is getting cheaper, it can still be very expensive.
盡管綠色能源的成本越來越低，造價卻還是很昂貴。
As these problems are solved, green energy will give us a good way to make electricity but not pollution.
隨著這些問題逐漸解決，綠色能源將可為我們提供一種能夠發電但不會制造污染的好方法。
