Picking up the energy is easy but storing & using this infrared energy is still something that is being researched.

While traditional solar cells only use visible light, the nanoantennas use mid-infrared rays and this quality enables them to collect energy even after dark. This happens because this latest approach does not focus on collecting sunlight, but capturing abundant solar energy mid-infrared rays radiated by the Earth as heat after absorbing energy from the sun during the day. This means the energy can be generated 24 hours nonstop. Another big advantage of using this source of energy is that it can be produced even by industrial processes such as coal-fired plants.

Full article: http://www.alternative-energy-news.info/nanoantennas-repl...

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Oh yes... Transparent solar panels...

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