Which oven uses less electricity?
Power Savers in the Kitchen: Which Oven Uses Less Electricity?
When you bake cookies or roast a chicken, your oven uses a lot of power. In fact, ovens are some of the biggest energy users in our homes! With power bills going up and many people trying to be kinder to the earth, knowing which oven uses less electricity can help you save money and energy. Let’s look at different types of ovens and find out which ones are the most clever about using power.
Types of Ovens and Their Power Use
There are many kinds of ovens you might have in your kitchen. Each one cooks food in a different way and uses different amounts of electricity. Let’s take a closer look at your options.
Conventional Electric Ovens
Conventional electric ovens are the kind most people know. They have heating elements at the top and bottom that warm up the air inside the oven. This hot air then cooks your food.
These ovens typically use between 2,000 to 5,000 watts when they’re on. To understand what that means, imagine 30-50 bright light bulbs all turned on at once! A regular baking session might use about 2-2.5 kilowatt-hours (kWh) of electricity.
Conventional ovens take a long time to heat up, usually 10-15 minutes. During this time, they’re using lots of power but not cooking anything yet. They also lose heat whenever you open the door to check on your food.
Only about 20-30% of the energy these ovens use actually cooks your food. The rest just heats up your kitchen, which is nice in winter but wasteful in summer!
Convection Ovens
Convection ovens look like regular ovens, but they have a fan inside. This fan blows the hot air around, which helps food cook more evenly and faster.
Because food cooks about 25% faster in a convection oven, you use less electricity overall. While these ovens use the same amount of power per minute (2,000-5,000 watts), they run for less time. A dish that takes an hour in a regular oven might cook in 45 minutes in a convection oven.
Convection ovens are about 20% more energy-efficient than conventional ones. The moving air helps cook food more efficiently, and some models have better insulation to keep heat from escaping.
Many newer ovens have both conventional and convection settings, so you can choose which one to use.
Toaster Ovens
Toaster ovens are small countertop ovens that can toast, bake, and sometimes broil food. They’re like tiny versions of regular ovens.
Because they’re much smaller, toaster ovens heat up quickly and use less power—usually 1,200-1,800 watts. When you cook small amounts of food (enough for 1-2 people), a toaster oven uses about half the energy of a big oven.
Toaster ovens are great for things like toast, small pizzas, cookies, or reheating leftovers. However, they can’t cook large items or multiple dishes at once like a full-size oven.
Some newer toaster ovens also have convection fans, making them even more efficient.
Microwave Ovens
Microwaves work completely differently from other ovens. Instead of heating air that then cooks food, they use waves of energy that heat the water molecules inside the food directly.
Microwaves use about 700-1,300 watts when running, but they cook food very quickly. Baking a potato might take an hour in a regular oven but only 5-8 minutes in a microwave. This makes microwaves about 80% more energy-efficient for many tasks!
However, microwaves can’t brown food and don’t work well for baking or roasting. Food cooked in a microwave often has a different texture than oven-baked food.
Electric Roaster Ovens
Roaster ovens are portable appliances that work like small conventional ovens. They’re especially popular for cooking large items like turkeys when you need extra oven space.
These ovens use about 1,300-1,450 watts—less than a full-size oven but more than a toaster oven. They heat up quickly and are well-insulated, so they’re fairly efficient.
Roaster ovens are good for specific tasks but aren’t as versatile as regular ovens.
Air Fryer Ovens
Air fryers are newer appliances that use convection heat (hot air blowing around) to “fry” food with little or no oil. Many now come as multi-function ovens.
Air fryer ovens typically use 1,400-1,700 watts when running. Like convection ovens, they cook food faster than conventional methods. Their small size means they heat up quickly and don’t waste energy heating empty space.
For small portions, air fryer ovens can use 50% less energy than conventional ovens. They’re especially good for making crispy foods like french fries, chicken wings, or roasted vegetables.
Steam Ovens
Steam ovens cook food using hot steam instead of dry heat. Some models use only steam, while others (called combi-steam ovens) can use both steam and conventional heating.
These specialized ovens use about 1,800-3,000 watts. They cook faster than conventional ovens but slower than microwaves. Steam ovens are very efficient because steam transfers heat better than dry air, and less heat escapes during cooking.
Food cooked in steam ovens keeps more of its vitamins and minerals. These ovens are great for vegetables, fish, and reheating food without drying it out.
Smart Ovens
Smart ovens connect to your home wifi and have special features like phone apps that let you control them remotely. Some can even recognize the food you put in and set the right time and temperature automatically.
While the basic power use is similar to conventional or convection ovens, smart ovens can be more efficient because:
- They preheat precisely when needed (you can start them remotely)
- They often have better temperature control
- Some have programs designed to cook specific foods in the most efficient way
- Many include multiple cooking methods (convection, steam, microwave) in one appliance
Smart ovens cost more upfront but can save energy over time if you use their smart features.
Comparing Oven Electricity Usage
Let’s see how these different ovens compare when it comes to using electricity.
| Oven Type | Typical Wattage | Energy Efficiency | Cost Per Hour* | Best Uses | Limitations |
|---|---|---|---|---|---|
| Conventional Electric | 2,000-5,000 W | Low (20-30%) | $0.25-0.60 | Large meals, baking, multiple dishes | Slow to heat, high energy use |
| Convection | 2,000-5,000 W | Medium (35-45%) | $0.25-0.60 | All-purpose cooking, even browning | More expensive than conventional |
| Toaster Oven | 1,200-1,800 W | Medium (50-60%) | $0.15-0.22 | Small meals, reheating, toast | Limited capacity |
| Microwave | 700-1,300 W | Very High (80-85%) | $0.08-0.16 | Quick heating, small portions | No browning, different texture |
| Electric Roaster | 1,300-1,450 W | Medium (50-60%) | $0.16-0.17 | Large single items (turkey, roasts) | Limited versatility |
| Air Fryer Oven | 1,400-1,700 W | High (60-70%) | $0.17-0.20 | Crispy foods, small to medium meals | Smaller capacity |
| Steam Oven | 1,800-3,000 W | High (65-75%) | $0.22-0.36 | Vegetables, fish, reheating | Specialized use, more expensive |
| Smart Oven | Varies | Varies (35-75%) | Varies | All-purpose with added convenience | High upfront cost |
*Based on average electricity cost of $0.12 per kWh. Your actual cost may vary.
Tips for Using Less Electricity with Any Oven
No matter which oven you have, these tips can help you save electricity:
- Don’t preheat longer than needed (most ovens reach temperature in 10-15 minutes)
- Use the oven light to check on food instead of opening the door
- Cook several things at once when using your oven
- Use the right size oven for your meal (toaster oven for small portions)
- Keep the oven door clean so you can see through the window
- Use glass or ceramic baking dishes – they hold heat better and let you turn down the temperature by 25°F
- Turn the oven off a few minutes before cooking is done – the residual heat will finish the job
- Make sure your oven door seals properly
- Use the self-cleaning feature right after cooking when the oven is already hot
- Consider using a different appliance (like a slow cooker or pressure cooker) for appropriate dishes
Which Oven Uses the Least Electricity?
After looking at all these options, which ovens are the true power savers?
Best Overall: Microwave Oven
For tasks it can handle well (like heating leftovers, cooking vegetables, or warming up small items), the microwave uses the least total electricity by far. It uses moderate power but runs for very short times, making it super efficient overall.
Best for Everyday Baking: Convection Oven
If you need a regular oven for baking, roasting, and other traditional cooking, a convection oven will use about 20% less electricity than a conventional oven. The fan helps cook food faster and more evenly.
Best for Small Households: Toaster Oven
For singles, couples, or small families, using a toaster oven instead of heating up a large oven can cut your electricity use in half. Modern toaster ovens can handle many tasks surprisingly well.
Best New Technology: Air Fryer Oven
For many everyday cooking tasks, an air fryer oven uses significantly less electricity than a conventional oven while giving crispy, delicious results. They’re especially good for cooking frozen foods, vegetables, and proteins.
Frequently Asked Questions
Does a gas oven use less electricity than an electric one?
Gas ovens do use less electricity because they primarily burn natural gas for heat. However, they still use some electricity for the clock, light, and ignition system. Overall, gas ovens may cost less to run depending on energy prices in your area, but modern electric convection ovens are often more efficient at actually cooking food.
How much money can I save by using a more efficient oven?
It depends on how often you cook and your electricity rates. As an example, if you use your oven 5 hours per week, switching from a conventional electric oven to a convection model could save about $40-60 per year. Using a toaster oven instead of a full-size oven when possible could save $100 or more annually.
Is it worth replacing my old oven to save electricity?
If your oven is more than 15-20 years old, a new energy-efficient model could pay for itself in energy savings over time. However, manufacturing new appliances also uses resources, so the most environmentally friendly option is usually to keep using your current oven until it needs replacement, but use it efficiently.
Do self-cleaning ovens use more electricity?
Self-cleaning ovens need better insulation to handle the high temperatures used during cleaning cycles, which actually makes them more energy-efficient during normal cooking. The cleaning cycle itself uses a lot of electricity, but if you run it rarely (2-4 times a year) and start it when the oven is already warm, the overall impact is minimal.
Which uses less electricity: a toaster or a toaster oven?
A regular slot toaster uses less electricity for making toast because it’s designed specifically for that job. A two-slice toaster typically uses 800-1,500 watts but runs for only 2-3 minutes, while a toaster oven might use 1,200-1,800 watts for 4-5 minutes to make toast. For just making toast, a regular toaster is more efficient.
Does the way I use my oven affect how much electricity it uses?
Absolutely! Your habits can make a big difference. Opening the door frequently can lower the temperature by 25°F each time, forcing the oven to use more electricity to reheat. Cooking multiple items at once maximizes efficiency. Even keeping the oven clean helps, as baked-on food and grease absorb heat that could be cooking your food.
Good oven choices and smart cooking habits can save electricity and money. For most households, having a combination of appliances—perhaps a convection oven, microwave, and either a toaster oven or air fryer—gives you the flexibility to choose the most efficient option for each cooking task. Remember, the best electricity saver is the one you use wisely!
