What you’re describing is kWh, not kW/h. You need to multiply power with time to get back to energy. An appliance using 1kW of power for 1h “uses” 1kWh of energy. The same appliance running for 2h requires 2kWh instead.
kW/h doesn’t really make sense as a unit, although it could technically describe the rate at which energy consumption changes over time.
What you’re describing is kWh, not kW/h. You need to multiply power with time to get back to energy. An appliance using 1kW of power for 1h “uses” 1kWh of energy. The same appliance running for 2h requires 2kWh instead.
kW/h doesn’t really make sense as a unit, although it could technically describe the rate at which energy consumption changes over time.