Originally Posted by
Biker395
Power (watts) = Work/time
Exactly, if you really want to know how much energy was expended, you need to know the work, which would be in watt-hours, or kW-hrs, or joules, or calories.
A 1/2 horsepower engine could pull a 100 ton load up a hill....very slowly, if it was geared low enough. "Power" by itself can be rather meaningless term.