It's TWh per year, so you have to multiply your figure of 0.00445 TW (without H!) by 24*365.25 hours giving you 39TWh/year; I guess if you add cooling and different gear you can get to 120TWh/year.
I agree it's kind of strange to measure stuff in TWh/year instead of just TW...
I agree it's kind of strange to measure stuff in TWh/year instead of just TW...