How much does an electric kettle cost to boil?
A kettle applies its full element directly to the water and switches off at the boil, making it the most efficient common way to heat water in small amounts.
Content reviewed 2026-09-27 · Rates published 2026-09-24 · methodology appliance-energy-1.0.0 · data vintage 2026-07-ytd
Using the tea-drinking household assumptions below, electricity costs about $0.08 per day of use and $2.38 for 30 days of use at the Texas average rate. Adjust the calculator for your equipment and schedule.
Example costs using the Texas state-average rate
These are generated examples for a consistent location. Enter your own ZIP and usage below for a more relevant state-average estimate.
| Scenario | Assumption | kWh/month | Cost/day of use | Monthly range | Cost at 365 days/year |
|---|---|---|---|---|---|
| A few cups a day | Two quick boils daily, about 8 minutes total 1500 W × 0.13 h/day × 1 duty × 30 days × 1 unit(s) | 5.85 | $0.03 | $0.62–$1.39 | $11.43 |
| Tea-drinking household | Five boils daily, about 20 minutes total 1500 W × 0.33 h/day × 1 duty × 30 days × 1 unit(s) | 14.85 | $0.08 | $1.58–$3.53 | $29.02 |
| Cooking workhorse | 40 minutes daily for drinks and cooking water 1500 W × 0.67 h/day × 1 duty × 30 days × 1 unit(s) | 30.15 | $0.16 | $3.21–$7.16 | $58.91 |
Wattage, runtime and duty cycle below are illustrative assumptions, not measurements of a particular model. Annual figures assume use on all 365 days; monthly figures use each scenario's stated number of days.
Source: U.S. Energy Information Administration, Electric Power Monthly Table 5.6.B. Data vintage 2026-07-ytd. State-average pricing is not your exact utility tariff.
What does one use cost?
Illustrative water-heating model: 20°C water heated to 100°C, 4.186 kJ per kg per °C, 85% efficiency and a 1,500 W kettle. Water mass is approximated as 1 kg/litre. Model runtime = litres × 4.186 × 80 / (3,600 × 0.85 × 1.5). Actual boiling point, minimum fill and losses vary.
| Task | Assumptions | kWh/use | Estimated cost/use |
|---|---|---|---|
| 0.5 litre from 20°C | 1,500 W, about 2.2 minutes, 85% efficiency assumption | 0.0547 | $0.01 Range $0.01–$0.01 |
| 1 litre from 20°C | 1,500 W, about 4.4 minutes, 85% efficiency assumption | 0.1094 | $0.02 Range $0.01–$0.03 |
| 1.7 litres from 20°C | 1,500 W, about 7.4 minutes, 85% efficiency assumption | 0.1860 | $0.03 Range $0.02–$0.04 |
Illustrative usage, priced at the same Texas state average as the calculator. Costs are rounded to cents; actual consumption and your utility price can differ.
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Why kettles win at heating water
The immersed element transfers nearly all its output straight into the water, and the automatic cutoff stops spending the moment the boil is reached. Stovetop pots on resistance burners lose heat around the sides doing the same job.
Boil only the water you need
Energy scales directly with volume: a full two-liter boil for one mug wastes most of the heat down the drain or to the countertop. Filling to the one-cup line is the single cheapest habit change this page can recommend.
Variable-temperature and keep-warm features
Gooseneck and tea kettles with temperature holds trade a small ongoing draw for convenience, which these boil-and-stop scenarios exclude. North American 120-volt kettles top out near 1,500 watts, so they simply take longer than higher-voltage kettles abroad, at similar energy per liter.
Frequently asked questions
Is a kettle cheaper than the microwave for hot water?
How much does one boil actually cost?
Does keep-warm mode change the picture?
Related appliance cost guides
- Coffee Maker Cost per Pot and per Month
- Microwave Electricity Cost per Use and Month
- Electric Stove Top Cost per Hour of Cooking
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