Yeah, I am just a programmer. TIL that datacenter capacity uses the unit Watt. I didn't believe it first, thought, again these journalists being confused about units. Not the first time.
But not too long ago (and still very common in office-building server rooms) they use "tons of refrigeration", which takes its name from the amount of power it takes to phase change a ton of water in 1 day. It is 12k BTU/h.