kW

Meaning:

A kilowatt (kW) is a unit of power. Power is the rate at which energy is generated or consumed. It represents the capacity to do work at a specific moment in time. The prefix “kilo” means a thousand, so one kilowatt equals 1,000 watts.

For example, a 2 kW heater uses 2 kilowatts of power at any given moment it is running.