It is the thermal energy of the gas, after all, that the turbine converts into electricity, so the colder the gas, the lower the yield.

毕竟，涡轮机转换成电力的能量是由气体的热量提供的，气体温度越低，发电量越小。

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The efficiency of a coal-fired thermal plant is typically in the range of 30%-35%. In a combined cycle gas turbine system running on natural gas, the maximum efficiency is in the range 45%-50%.

烧煤的热电厂的效率通常在30%到50%之间，使用天然气的联合循环燃气轮机系统最大效率在45%到50%之间，而很多专家认为高温燃料电池的效率可达到80%至85%。

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If the one about the size of England were covered with solar thermal mirrors (which heat up fluid to drive a turbine), it could supply all the world's electricity needs, he said.

他说如果有像英格兰这么大的区域覆盖了太阳热能收集镜(它通过加热液体来推动涡轮)，就足满足全世界的电力需求。

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That is not great compared with the 20% and more achieved by a silicon-based solar cell, the 40% managed by a solar-thermal turbine, or even the 18-20% of one of the new generation of cheap and cheerful thin-film solar cells.

ECONOMIST: Solar power

It is the thermal energy of the gas, after all, that the turbine converts into electricity, so the colder the gas, the lower the yield.

ECONOMIST: Geothermal energy: Blowing hot and cold | The

As solar panel prices have plunged, developers like Solar Millennium have abandoned solar thermal technology, which uses huge mirror arrays to heat water to create steam that drives an electricity-generating turbine.

FORBES: U.S. Solar Market Jumps 69% in Q2 But Likely To Cool Off