Part of the minimal impact could be attributed to the fact that only 30 per cent of Calgary’s energy demands come from residential customers, while 70 per cent is used by commercial and industrial customers, according to Enmax.
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http://www.calgaryherald.com/technol...#ixzz2OU4mFelK
That is why this is so damn useless.
People turning off their lights for one hour makes no difference at all. Its not going to change any one's habits.