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A comment on Solar is now cheaper than some coal, says India energy minister. Parent comment

Re:Solar is now cheaper than some coal, says India energy mi... by xaldir on Tuesday April 19, 2016 @04:17AM (#11525564)
No it's not. Solar panels must be free from dust to remain efficient, meaning you have to clean them, frequently, with water...
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Re:Solar is now cheaper than some coal, says India energy mi... by Intermernet on Tuesday April 19, 2016 @06:42AM (#11526050)
There are patents regarding ultrasonic cleaning of panels[1]. Not sure about actual products yet.

[1]: http://www.google.com/patents/US20120285516

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Re:Solar is now cheaper than some coal, says India energy mi... by u_me_him on Tuesday April 19, 2016 @09:42AM (#11526828)
There is some type of coating that doesn't allow anything to stick to it. That is a start. I think is called enduroshield. It is not a permanent solution because it wears down but it would help.
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