[mikekchar]

20 kW in what period of time? 20 kW in a year is nothing. 20 kW in a second is quite a lot.

Edit: Facepalm!

[quietbritishjim]

I think you're thinking of kWh, which are kilowatt hours. In which case, the answer is 20 kWh per hour.

[rsynnott]

A watt is a measure of power, not energy.