Here's the short answer: a slow cooker is usually worth buying if you'll use it about once a week. It's cheap to run, and it costs less to buy than many people expect. What really saves you money is what it lets you cook: big batches made from low-cost ingredients.
If it ends up in a cupboard, though, it's just $40 of clutter.
Let's work through the numbers so you can decide for yourself.
What a slow cooker costs to buy
You don't need a fancy model. A basic manual slow cooker with low, high, and warm settings does the job.
In the US, the Crock-Pot 7-quart manual slow cooker lists for about $40 at Walmart, and it has dropped to around $35 during holiday sales. Prices change often, so check before you buy.
We'll use $40 in the math below.
What a slow cooker costs to run
Slow cookers draw very little power. In one home test with a plug-in power meter, a slow cooker drew about 123 watts on low and 189 watts on high. An 8-hour cook that switched between both settings used 1.17 kWh. A separate test in the UK found that a 10-hour cook used 1.32 kWh.
So a full-day cook comes to roughly 1.2 kWh.
In the US, the Energy Information Administration expects the average residential electricity price to be 18.2 cents per kWh in 2026.
That means:
- 1.2 kWh × $0.182 ≈ 22 cents per cook
Your rate could be much higher or lower than that. Check your electric bill for the price per kWh where you live. In New England and Hawaii, for example, rates run well above the national average.
Slow cooker vs. oven: the energy comparison
Ovens use much more power. A table from Seattle City Light lists an electric oven at 350°F using about 2 kWh per hour.
Say you braise a pot roast in the oven for 2 to 3 hours instead of slow-cooking it all day. At the same 2026 US average rate:
| Method | Energy used | Cost at 18.2¢/kWh |
|---|---|---|
| Slow cooker, ~8 hours | ~1.2 kWh | ~$0.22 |
| Electric oven, 2–3 hours | ~4–6 kWh | ~$0.73–$1.09 |
That works out to about 50 cents to 85 cents saved each time you use the slow cooker instead of the oven.
These are estimates. Your real numbers depend on your appliances, your recipe, and your local rate.
How long until it pays for itself?
If you only count the energy savings:
- $40 ÷ $0.50 to $0.85 per cook ≈ 47 to 80 cooks
At one cook a week, that's about one to one and a half years.
That's a fair payback, but not a dramatic one. Energy is only part of the story.
A cost-per-meal test (hypothetical)
What matters more is the kind of food a slow cooker is good at. It turns cheap, sturdy ingredients like dried beans, tough cuts of meat, and root vegetables into large, filling batches.
Here's a hypothetical pot of beef-and-bean chili that makes 8 servings. The beef and bean prices are US city averages from the Bureau of Labor Statistics. The "everything else" line is an assumption, not a measured price.
| Item | Cost |
|---|---|
| 1 lb ground chuck (BLS, May 2026: $6.72/lb) | $6.72 |
| 1 lb dried beans (BLS, Feb 2026: $1.70/lb) | $1.70 |
| Canned tomatoes, onion, spices (assumed) | $4.00 |
| Electricity (8 hours) | $0.22 |
| Slow cooker wear ($40 ÷ 156 uses, i.e. weekly use over 3 years) | $0.26 |
| Total | $12.90 |
| Per serving (8) | About $1.61 |
Notice how little of the total comes from the appliance itself. Electricity plus wear adds up to about 6 cents per serving. Nearly all the cost is food.
So the real question isn't whether a slow cooker is cheap to run. It is. The question is whether it will change what you cook and how often you cook at home.
If it helps you swap a few takeout nights for a $1.50 to $2 bowl of chili or stew, that's where the money adds up.
When a slow cooker is probably worth it
A slow cooker tends to earn its spot if you:
- Are away from home most of the day and want dinner ready when you walk in
- Like cooking once and eating several times, through leftovers, lunches, or freezer meals
- Buy budget staples like dried beans, lentils, or cheaper cuts of meat that need long, slow cooking
- Would otherwise run the oven for hours on braises and stews
When you can probably skip it
It may not be a good buy if you:
- Already own a multicooker (like an Instant Pot) with a slow-cook setting
- Have a Dutch oven and are happy using the stovetop or oven now and then
- Have very little counter or storage space
- Mostly cook quick meals like stir-fries, eggs, or pasta
There's no wrong answer here. It's fine to leave it on the store shelf.
A few food safety basics
Slow cookers are safe when used correctly. According to the USDA Food Safety and Inspection Service, slow cookers cook at roughly 170°F to 280°F, and the steady heat, long cooking time, and steam work together to kill bacteria.
A few USDA tips to keep in mind:
- Thaw meat and poultry first. Frozen meat can sit too long in the temperature "danger zone."
- Keep the lid on. Each peek lets heat escape. Michigan State University Extension notes that the temperature can drop 10 to 15 degrees when you lift the lid.
- Don't reheat leftovers in it. Reheat on the stove or in the microwave to 165°F, then use the slow cooker only to keep food warm.
- If the power went out while you were away, throw the food out, even if it looks done.
With dried beans, follow your recipe's directions closely, since some types need extra prep before slow cooking.
The bottom line
In the US, a basic slow cooker costs about $40 and roughly 22 cents per cook to run at average 2026 electricity rates. Electricity and wear add only a few cents per serving.
If you'll use it about once a week for batch meals made from budget ingredients, it can pay for itself and make home cooking easier. If you already own something that does the same job, or you don't cook that way, you can skip it.
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