Rice Cooker Energy Consumption: How Many Watts Does a Rice Cooker Use?


Nearly half of the world consumes rice daily. Using the stove to make rice is not unheard of but it can be a pain to do so as the quality of the cooked rice can differ from time to time. One day, you’ll have nice and fluffy rice, the next day, you might end up with white rice that’s mushy and inedible. This is a huge issue, especially if you eat rice multiple times a day or in a week. 

Fortunately, the rice cooker exists to help us with our rice cooking woes. This appliance is the best and most foolproof device to get high-quality, deliciously cooked rice without any hassle. Not only do rice cookers make rice, but they can also cook various food items such as vegetables, fish, and meat. These days, most households now have a rice cooker in their kitchens.

However, have you ever wondered about the electricity consumption of your electric rice cooker? It’s a common question, especially when we’re trying to save energy and money. Understanding the power consumption of rice cookers not only sheds light on their efficiency but also offers insights into optimizing energy usage in our daily culinary endeavors. Delving into this topic unveils not only the technical aspects but also the broader implications for sustainability and household management.

Defining Terms Related to Power Consumption

Before we begin discussing the energy usage of a rice cooker, let us first define some terms to help you understand this article better. 


Wattage refers to the amount of electrical power consumed by an appliance, measured in watts. In the case of a rice cooker, wattage indicates the rate at which it consumes electricity while in operation. For example, if a rice cooker has a wattage rating of 700 watts, it means that it consumes 700 watts of power per hour while cooking rice. A higher wattage means that the rice cooker generates more warmth, contributing to faster cooking times. While that may seem appealing, a high wattage can also mean a higher electricity bill. 

Cost per Unit

Cost per unit, also known as the cost of electricity or electricity tariff, refers to the price charged by the utility company for each unit of electricity consumed. This cost is typically measured in currency per kilowatt-hour (kWh). To calculate the cost of operating a rice cooker, you multiply the wattage of the rice cooker by the number of hours it is used and then divide by 1000 to convert watts to kilowatts. Finally, you multiply the result by the cost per unit of electricity to determine the total cost.

Units per Day

Units per day represent the total amount of electricity consumed by a rice cooker over a 24-hour period. This measurement depends on factors such as the frequency and duration of rice cooking sessions. To calculate the units per day for a typical rice cooker, you multiply the wattage of the rice cooker by the number of hours it is used per day and then divide by 1000 to convert watts to kilowatts.

Do Rice Cookers Consume a Lot of Energy?

One of the most common queries regarding rice cookers revolves around their energy usage. Fortunately, rice cookers are generally designed to be energy-efficient appliances. Unlike some other cooking appliances that may require high levels of power to operate, rice cookers consume modest amounts of power.

The energy consumption of a rice cooker primarily depends on its wattage rating. While it primarily depends on the different models, the power consumption of many rice cookers ranges from 300 to 800 watts, with smaller models on the lower end and larger rice cookers on the higher end. Compared to many other kitchen appliances, this electricity usage is relatively low.

Additionally, rice cookers are engineered with features that contribute to their energy efficiency. Their insulated design helps to retain heat effectively, allowing them to cook rice using minimal energy. Furthermore, once the rice is cooked, many rice cookers automatically switch to a “keep warm” mode, which consumes even less energy compared to the cooking process.

Overall, while a rice cooker does consume energy, it is generally considered to be a modest amount, especially when compared to the convenience and efficiency it offers in cooking rice.

What Is the Energy Conversion of an Electric Rice Cooker?

Understanding the energy conversion process of an electric rice cooker provides further insight into its energy consumption. When you plug in a rice cooker, electrical energy from the power source is converted into heat energy within the appliance.

This conversion process occurs primarily through the rice cooker’s heating element, which generates heat to boil water and cook the rice. The efficiency of this conversion process contributes to the overall energy consumption of the rice cooker. Modern rice cookers are designed to optimize this conversion process, ensuring minimal energy wastage during cooking.

How Much Energy Does It Take to Cook Rice?

The amount of electricity required to cook rice can vary depending on factors such as the wattage of the rice cooker and the duration of cooking. As mentioned earlier, the electricity consumption of rice cookers ranges from a wattage of 300 to 800. A rice cooker with a larger capacity will have a higher wattage compared to a rice cooker with a small capacity.

It’s also worth noting that a basic rice cooker has a lower wattage in comparison to a rice cooker with more features. A unit that has multiple food presets, grain selection, precise temperature control, and other features will measure a wattage of 700 or even higher as it consumes more electricity to offer an elevated cooking experience. On the other hand, a basic rice cooker unit will have a low wattage because it’s straightforward and offers simpler functionality.

The cooking time also affects the electricity usage. On average, a typical rice cooker can cook one cup of rice in about 30 to 45 minutes, depending on the type of grain. During this time, the rice cooker uses its rated wattage to heat the water, bring it to a boil, and maintain a steady temperature until the rice is fully cooked.

Does Soaking Rice or Cooking Rice in Excess Water Affect the Power Consumption of a Rice Cooker?

Yes, both soaking rice and cooking rice in excess water can influence the energy consumption of a rice cooker. When rice is soaked before cooking, it absorbs water, helping to soften the grains. Soaking rice 20 to 30 minutes before cooking can also reduce cooking time. This shorter cooking duration can translate to lower electricity usage since the rice cooker requires less time to bring the water to a boil and cook the rice thoroughly. 

On the other hand, using more water than the recommended amount can have the opposite effect. When there is too much water in the rice cooker, the appliance must expend more energy to heat and evaporate the additional water. This results in a longer cooking time and more energy usage. 

Therefore, the cooking methods used to prepare rice can indeed impact the energy efficiency of a rice cooker. Opting for pre-soaking methods and using the appropriate amount of water can help minimize power consumption when using a rice cooker.

Can Keeping the Lid Closed Consume Less Electricity?

Yes! Always keep the lid closed when making rice because opening it from time to time will reduce the warmth and therefore prolong the cooking time.

Which Kitchen Appliance Has a Higher Electricity Usage, a Rice Cooker or a Pressure Cooker?

Determining the higher electricity usage between a rice cooker and a pressure cooker involves considering various factors such as wattage, food preparation method, technology, and cooking time. 

Rice cookers and pressure cookers employ different cooking techniques, which affect their electricity consumption differently. Steaming is the primary method to cook rice, requiring consistent heat to bring the water to a boil and maintain it until the rice is cooked. 

On the other hand, pressure cookers utilize a combination of warmth and pressure to cook food quickly and efficiently. The technology behind pressure cookers allows them to cook food at higher temperatures and pressures, significantly reducing the cooking times of food compared to conventional methods. 

While both appliances consume electricity, pressure cookers tend to have higher electricity usage and higher wattage due to their shorter cooking times and higher cooking temperatures, which require more power to generate and maintain.

How Much Electricity Does Rice Cooker Use for Keep Warm?

The temperature of the rice decreases rapidly once the cooker’s heater is switched off. This is why many cookers have a “keep warm” function. After the rice is cooked, the automatic “keep warm” function maintains the rice at a suitable serving temperature for an extended period without drying it out. This function typically consumes less energy in comparison to the rice cooking process.

When in “keep warm” mode, rice cookers often reduce their power consumption significantly. Some models may use a low amount of wattage, around 10 to 50 watts, to keep the rice warm, depending on factors such as the insulation of the cooker and the ambient temperature of the surroundings.

While the “keep warm” function does add to the overall energy usage of the rice cooker, its relatively low power consumption makes it an energy-efficient way to maintain perfectly cooked rice at an optimal temperature until it’s ready to be served.

Final Note

In conclusion, while a rice cooker does consume energy, it is generally considered to be an energy-efficient appliance. With its modest power usage and efficient design, the energy consumed by a rice cooker remains relatively low, especially when compared to the convenience it offers for cooking rice. 

By understanding the energy usage of rice cookers and practicing energy-conscious habits, such as using the appropriate size cooker and utilizing the “keep warm” function effectively, households can further optimize their energy consumption in the kitchen.