The Watt:
The standard unit of power is watt, represented by W. One watt is equal to one joule of energy expended for one second of time (1 J/s). However, power is a measure of the rate at which energy is generated, radiated, or consumed. The expression of watts in terms of SI base units starts to get esoteric, as you have been notified:
1 W= 1 kg . m2/s3