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Welcome to Wikipedia. Everyone is welcome to contribute to the encyclopedia, but when you add or change content, please cite a reliable source for your addition. This helps maintain our policy of verifiability. See Wikipedia:Citing sources for how to cite sources, and the welcome page to learn more about contributing to this encyclopedia. Thank you. Materialscientist (talk) 22:49, 8 January 2012 (UTC)

A similar comparison is here

The assumptions are slightly different - 50,000 hours vs. 10 years, and 20 cents/kWHr vs 15. (talk) 00:06, 9 January 2012 (UTC)