1 kW (kilowatt) is equal to 1,000 watts of power. It's a measure of how much energy is used or produced per unit of time.
For example, if a device or machine is rated at 1 kW, it consumes or generates 1,000 watts of energy every second. In terms of daily usage, if you run a 1 kW device for 1 hour, it will consume 1 kilowatt-hour (kWh) of energy.