horsepower hour
/ˈhɔːrsˌpaʊər ˌaʊər/
noun
- A unit of energy equal to the work done by one horsepower operating for one hour, used especially for engines and motors.
- The battery stores enough energy for 2 horsepower-hours of work.
- The generator produced 10 horsepower-hours of electricity.
- Engineers measured the pump's output in horsepower-hours.