Watts (W)

It measures the rate at which energy is transferred or consumed. Think of it as:* How fast something is working. A 100-watt light bulb consumes energy 100 times faster than a 1-watt LED light bulb.

Kilowatts (kW)

Prefix "kilo" means thousand:* 1 kilowatt (kW) is equal to 1,000 watts (W). Used for high-powered devices:* Appliances like washing machines or air conditioners often have power ratings in kilowatts.

Watt-Hour (Wh)

It measures the amount of energy consumed over a period of time (usually one hour). Think of it as: The total work done by something over a specific time. A 100-watt light bulb running for one hour consumes 100 watt-hours (Wh) of energy.

Kilowatt-Hour (kWh)

Prefix "kilo" means thousand:* 1 kilowatt-hour (kWh) is equal to 1,000 watt-hours (Wh). Commonly used in electricity bills: It measures the total amount of electrical energy consumed over a period, typically a month. Higher kWh usage means higher electricity bills.