Apart from some coal and abundant hydroelectricity, Chile has almost no conventional energy sources.

智利除了有着一些原煤储备与大量的水利电气产出量，它几乎没有任何的能量资源。

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Researchers are creating ways to power small mobile devices like cellphones, MP3 players and laptops when there is no access to conventional energy sources.

研究人员发明了一个驱动小型设备的方法像手机，MP3播放器和手提电脑当这些设备没有办法连接上传统的能源的时候。

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However, some solar energy installations, because the low efficiency, high cost, generally speaking, economics can not compete with conventional energy sources.

但有的太阳能利用装置，因为效率偏低，成本较高，总的来说，经济性还不能与常规能源相竞争。

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At the nexus of these life-improving advancements and routine behavior, however, stand conventional energy sources, especially oil.

FORBES: Tarballs And Fouled Ecosystems Are Awful But Oil Is Here To Stay

The primary argument against taking advantage of our affordable conventional energy sources is the emissions from conventional power plants.

FORBES: Obama Unites Global Warming Alarmists, Skeptics In Presidential Debates

India is unusual in having a Ministry for Non-Conventional Energy Sources.

ECONOMIST: The sunny side of India