If solar power is ever going to take off-and the world needs it to-photovoltaic cells will have to become a whole lot cheaper to produce.

如果太阳能产业可以崛起——并且世界需要它如此——光电池将不得不成为发电产业中造价低廉的一份完整的份额。

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Solar cells here at Lieberose, Germany's biggest photovoltaic plant, produce enough electricity (at peak output) to power a small town.

在这个位于利伯罗瑟的德国最大的光伏发电场，太阳能电池板所发出的电能在峰值时能够满足一座小城的需求。

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Most solar power comes from photovoltaic cells that turn sunlight directly into electricity: installations of this type can be any size.

多数太阳能是由太阳能光伏发电电池直接将太阳光转换成电能产生的，这类装置规模大小不限。

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It makes silicon solar wafers and photovoltaic cells and builds and runs solar power stations.

FORBES: Magazine Article

If, on the one hand, you've got biofuels which represent only a half a percent conversion of sunlight, and let's say you've got photovoltaic cells and concentrated solar power systems, the efficiency of solar in terms of pure conversion is 50-100 times greater.

CNN: Biofuels: What do the experts think?

Even with the ability to convert sunlight into electricity with high efficiency using photovoltaic solar cells, many challenges prevent us from being able to power all our energy needs with solar panels.

WHITEHOUSE: Engage and Connect