Electric kettles use 1500-3000 watts but only for a few minutes per boil.
- Boiling a liter costs about 1.6 cents on average, so daily use is under a dollar a month.
- Electric kettles are more efficient than stovetop kettles, especially on gas stoves.
- To save energy, boil only the water you need and descale your kettle regularly.
How much electricity does an electric kettle use?
Electric kettles draw between 1500 and 3000 watts, depending on the model. Most common household kettles are rated around 1500 to 1800 watts. The wattage determines how fast the kettle heats water. Higher wattage means quicker boils but also higher instantaneous draw. However, the total energy consumed is based on wattage multiplied by time. A 1500-watt kettle boiling for 4 minutes uses 0.1 kWh. That's a small amount compared to many other appliances.
What is the cost of boiling water with an electric kettle?
The cost depends on your electricity rate. At the average US rate of 16 cents per kWh, one boil costs about 1.6 cents. Boiling water twice a day costs roughly a dollar a month. That's minimal compared to a refrigerator or air conditioner. Some utilities have tiered rates, so your cost may vary. Check your electricity bill for exact pricing.
Electric kettle vs stove: which is more energy efficient?
Electric kettles are generally more efficient than stovetop kettles. They heat water directly with an immersed element, losing less heat to the air. Stovetop kettles on an electric coil lose about 20% of energy to the room. Gas stoves lose even more, up to 60%. So an electric kettle boils water faster and uses less energy. Owners report savings on their electricity bill after switching.
How to reduce electric kettle energy usage
Only boil the amount of water you need. Filling the kettle to the max when you need one cup wastes energy. Use a kettle with a water level window to measure accurately. Descale your kettle regularly to maintain efficiency. Scale buildup insulates the heating element, making it work harder. Also, unplug the kettle when not in use to avoid standby power draw.
Are there energy-efficient electric kettles?
Yes, some models are designed to be more efficient. Look for kettles with auto shut-off and keep-warm features. Insulated kettles retain heat longer, reducing reboils. Some have variable temperature settings, so you don't overheat water for green tea or coffee. Check the wattage: lower wattage may be slower but uses less power per minute. However, total energy is similar for the same amount of water.