[mminer237]

So say 10 gigawatts over 50 microseconds. So you could charge it up in about 3½ minutes from a standard residential outlet.

[danbruc]

Wikipedia says a typical lightning bolt releases 1 GJ, so 10 GW you can have for 100 ms, for 50 µs you can have 20 TW. And most importantly 1.21 GW for the better part of a second, 826 ms to be precise.