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A comment on Denmark’s wind farms generated 140% of the country’s electricity needs yesterday. Parent comment

Re:Denmark’s wind farms generated 140% of the country’s elec... by emp_zealoth on Saturday July 11, 2015 @05:53AM (#9869210)
Personally, I was often curious how much of 'global warming' is due to human energy generation (30%~40% efficiency), which all ends up as heat anyway. Also, the average temperature in cities is way way higher than it is in more natural locations.
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Re:Denmark’s wind farms generated 140% of the country’s elec... by mbq on Saturday July 11, 2015 @01:02PM (#9870549)
It shouldn't be significant because GW is all about how bad Earth is in dissipating energy into space (in comparison to black body), rather than how much energy flows through. Nevertheless, let's count: according to Wiki, 2012 World energy consumption is 5.6*10^20J; this means we were producing at an average rate of this/seconds in year/area of Earth, which is 0.034W/m^2. Solar input (and thermal radiation output, since Earth is roughly in an equilibrium) is 340W/m^2, making our input 0.1%, about the same as variations due to solar cycles.
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