Watt vs kW vs kWh—what’s the difference? Watts (W) measure small power outputs, while kilowatts (kW) indicate a larger system’s capacity. Kilowatt-hours (kWh), on the other hand, measure total energy usage over time. For instance, a 5 kW solar system operating for 5 hours generates 25 kWh of energy. This distinction is essential when estimating the output of a solar panel kW system an... https://solarsme.com/understanding-kilowatt-and-kilowatt-hour/