We calculate the amount of time needed to generate enough energy to overcome the gravitational binding energy of the earth = 2 * 10^32 J.
Total worldwide electricity production = 20000 TWh/yr
Time needed to destroy the earth = 3 trillion years
Power production by our human civilization is quite puny compared to astronomical objects.
Solar power = 400 YW
Time needed = 6 days
Deneb = 8 * 10^31 watts
Time needed = 3 seconds
R136a1 = 3 * 10^33 watts
Time needed = 60 milliseconds
Supernova peak luminosity = 10^36 watts
Time needed = 200 microseconds
Quasar = 10^40 watts
Time needed = 20 nanoseconds
Gamma ray burst = 10^45 watts
Time needed = 200 femtoseconds
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