How much energy did earth hour save?

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  • #22818
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    Are there any estimates on how much energy was saved globally due to earth hour?

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  • #328609
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    Heyaa .
    I think it hasn’t saved any energy but it has consume more energy than usual because switching on and turning off lights consumes twice energy as if you leave the lights on.

    #328597
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    Do you mean those power plants were also shutdown? Because if didn’t there’s no meaning at all and its a waste of effort putting people in danger without light for one hour.

    #328582
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    The Earth Hour site doesn’t go very far to tell this because they stress the act as symbolic and advocacy, but a couple other sources tell various tidbits. One site says Toronto saved over 2 million kilowatts-hour while another site says northern Illinois saved 100,000 kilowatts-hour. For comparison the world supposedly used 14 billion kilowatt-hours per year, so you can see it’s not going to avert global warming or anything, but it is something.
    I saw this issue of power plant shutting down in another question, and I brought to their attention that according to that second source, the area’s electric consumption only decreased by 1% – so I’d need to see some proof or official declaration that any power plants were shutting down before I take that as more than a joke.

    #328581
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    You know, Joel, people on both sides of the question gave answers to that and each one was different. I don’t know which story to believe and I seriously doubt anything said by a republican or democrat because they will always slant their answers to look better for their side. I personally don’t think it made much difference at all since not everyone took part.

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