What does a pottery kiln cost to run?

Run the numbers on your own use

Change any of these and the figures update. The defaults are the typical case described above; your rate is the input that moves the answer most.

Why this is lower than the number you will see elsewhere

Almost every published answer to this question multiplies the rating on the label by the hours the appliance is switched on. For a pottery kiln that gives 1,728 kWh a year, or $317.

Averaged across a firing: full draw during the ramp, then progressively less as it holds and soaks near the top temperature.

The arithmetic, step by step

Nothing here is hidden, so you can check it or change it. Working in the order the formula runs:

1. 8,000 W — what it draws while it is actually drawing. This is the rating on the plate.
2. × 60% — the share of its in-service time it is really pulling that. Averaged across a firing: full draw during the ramp, then progressively less as it holds and soaks near the top temperature.
   That gives 4800 W averaged across the hours it is on.
3. × 9 hours a day × 24 days — A medium studio kiln fired roughly twice a month to cone 6.
   4800 × 9 × 24 ÷ 1,000 = 1,037 kWh a year.
4. × 18.34¢ — the US average residential rate for June 2026.
   1,037 kWh × 18.34¢ = $190 a year.

Change any assumption in the calculator above and every figure on this page moves with it. The two that matter most are your rate, which varies 4× across the country, and the hours — the duty cycle is a property of the appliance, but the hours are a property of you.

How sensitive is that number?

A single figure invites more confidence than it deserves. Here is the same appliance under assumptions either side of the default, so you can see how much of the answer is the appliance and how much is the guess about how you use it.

Everything else held at the default. The spread here is the honest error bar on the headline figure.

What it costs per hour, day and month

At 18.34¢ per kWh, the US residential average for June 2026.

The thing worth knowing

A kiln is the largest single load most hobbyists will ever plug in, and its cost is dominated by the firing schedule rather than the kiln. A slow ramp to a lower cone can use half the electricity of a fast ramp to a high one, and the difference between a well-insulated kiln and a tired one with worn brick is comparable. Per firing rather than per year is the only useful way to think about it.

What it costs in your state

The appliance is the same everywhere; the rate is not. Running this pottery kiln costs $547 a year in Hawaii and $136 in Nevada — a difference of 4×.

Cost of running one pottery kiln for a year, by state. Residential average price, EIA June 2026.

Other tools, hobbies and outdoors costs

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• Electric fireplace

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  Evenings through winter with the heater on.

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• Electric sauna heater

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  A 4–6 person home sauna, used a couple of times a week.

Questions

Source: U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A, June 2026. U.S. Government work, public domain.

How every figure on this page is computed · Where the data comes from