Such big plants are harder to finance than small photovoltaic installations, and require more planning permissions and infrastructure, such as transmission lines. But they produce a lot of power.
这样规模的工厂相比小型的光电装置在筹措资金方面更困难，并要求更繁琐的规划许可和基础设施，如传输线，但是其产电量很大。
Analysts at HSBC, a bank, reckon that the full cost of producing power from wind turbines, for instance, is about one sixth the cost of producing it from photovoltaic plants.
据汇丰银行的一位分析师估计，风力发电的总成本只有光伏发电站发电成本的六分之一。
About 89, 000 photovoltaic and concentrated solar power plants, averaging 300 megawatts apiece, would be needed.
这需要大约89000座平均产能300兆瓦的光伏和太阳能发电站。
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