Whether a gas kettle is cheaper than an electric kettle depends mainly on the price of energy in your area and the efficiency of the heating method. Both options have advantages, so the final cost can vary.
electric kettles are generally more energy-efficient than heating water on a gas stove. The heating element sits directly in the water, so most of the energy is transferred into the water instead of the surrounding air. electric kettles typically reach about 80% efficiency, while gas cooking methods often lose a large amount of heat to the air and may operate around 40% efficiency.
Because of this design, electric kettles usually boil water faster and waste less heat.
Even though electric kettles are more efficient, gas can sometimes be cheaper per unit of energy in many regions. If gas prices are significantly lower than electricity prices, boiling water on a gas stove may cost slightly less for a single use. However, the difference is usually small and depends heavily on local energy prices.
Electric kettles also have practical advantages:
Faster boiling time
Automatic shut-off for safety
More precise heating control
Modern electric kettles typically boil water within a few minutes because their heating element directly contacts the water.
Gas kettle: May be cheaper if gas energy prices are low.
Electric kettle: Usually more efficient and faster.
Actual cost: Depends on local electricity and gas prices.
In everyday use, the cost difference per boil is usually very small, so many households choose electric kettles mainly for convenience, safety, and speed.