I know it's a tad pedantic, so excuse me: When we're talking about energy, the units are kWh (i.e. kW * h), not kW/h. Watts/kilowatts are already defined as un

I know it's a tad pedantic, so excuse me: When we're talking about energy, the units are kWh (i.e. kW * h), not kW/h. Watts/kilowatts are already defined as unit energy per unit time. In the case of watts, we're talking Joules (energy) per second. kWh is thus 1000 joules / second for 1 hour (3600 seconds), or 1000 * 3600 = 3 600 000 joules (3.6 MJ). kW/h exists, it just means something different - a rate of acceleration of changing energy (joules / s / s).