Household appliances electricity consumption

3 Apr 2023

Our guide on household appliances electricity consumption and cost-saving strategies. Understanding how much power your appliances use and finding ways to reduce your electricity costs can help you save money and reduce your carbon footprint. We’ll explore the appliances that consume the most electricity, how to estimate your energy usage, and tips for reducing your energy consumption and costs. By the end of this guide, you’ll have a better understanding of your home’s energy usage and be equipped to make an informed decision about how much solar you need for your home.

Ready to make the switch to solar energy? Check out this ultimate guide to solar panels to get started.

Why you need to know how much energy your appliances consume

Understanding energy consumption in homes is crucial for a number of reasons. Firstly, it helps you to identify which appliances are consuming the most energy, and therefore which ones are costing you the most money. This knowledge can then be used to take steps to reduce your energy consumption and accurately size your home solar system installation.

Appliance energy usage terminology

Wattage: The power consumption of an appliance is measured in watts. You can usually find the wattage information on a label attached to the appliance or in the user manual.

Energy Efficiency: Newer appliances are often more energy efficient than older models, meaning they use less electricity to perform the same task. When shopping for new appliances, look for an “A” rating label, which indicates that the appliance meets strict energy efficiency guidelines.

Standby Power: Many appliances continue to use electricity even when they are turned off but still plugged in. This is called standby power, and it can account for up to 10% of your home’s electricity usage. To reduce standby power, unplug appliances when they’re not in use or use a power strip with an on/off switch.

household appliance energy efficiency rating

Energy Use of Common Appliances: Here are some examples of how much electricity common household appliances use:

ApplianceWattsElectricity Usage (kWh)
Aircon18001.8 per hour
Ceiling Fan600.6 per hour
Clothes Dryer10001 per hour
Dishwasher12001.2 per load
Freezer1101.1 per hour
Fridge1001 per hour
Geyser87508.75 per day
Iron10001 per hour
Kettle15000.125 per use
Laptop65650 per hour
LED Light Bulb100.1 per bulb per hour
Stove/Oven20002 per hour
Toaster8000.07 per use
TV1001 per hour
Vacuum Cleaner7500.75 per hour
Washing Machine5000.5 per load
Wifi Router300.3 per hour

These home appliances consume the most electricity

Some household appliances consume more electricity than others, and understanding which appliances use the most energy can help you make informed choices to reduce your electricity usage and know what will be using the most power from your solar system.

Air Conditioners: Air conditioners are among the most power-hungry appliances in your home, especially if you have a central air conditioning system. A typical central AC unit can use up to 5000 watts of electricity.

Water Heaters: Water heaters are another major energy hog in many households. A typical electric water heater can use up to 4500 watts of electricity when it’s heating water.

Clothes Dryers: Clothes dryers are necessary for drying clothes quickly, but they also use a lot of electricity. Depending on the size and efficiency of the dryer, it can use up to 5000 watts of electricity.

Electric Ovens: Electric ovens use a lot of energy to heat up and maintain a consistent temperature. A typical electric oven can use up to 4000 watts of electricity.

Electric Cooktops: Like electric ovens, electric cooktops also use a lot of energy to heat up and maintain a consistent temperature. A typical electric cooktop can use up to 3000 watts of electricity.

Pool Pumps: If you have a swimming pool, you likely have a pool pump to keep the water clean and clear. Pool pumps can be extremely energy-intensive, using up to 4000 watts of electricity or more.

Tips for reducing energy consumption

Reducing energy consumption in your home is not only good for the environment, but it can also help you save money on your electricity bill in South Africa. Here are some tips for reducing your energy consumption:

Upgrade to Energy-Efficient Appliances: Look for appliances that have earned the South African Energy Efficiency Label, which means they meet the energy efficiency standards. Energy-efficient appliances use less electricity to perform the same task as less efficient models.

Use Power Strips: Many appliances and electronics continue to use energy even when they are turned off but still plugged in. To prevent this, use power strips with an on/off switch to turn off multiple devices at once when they’re not in use.

Use Natural Lighting: Take advantage of natural lighting by opening curtains or blinds during the day. This can help you reduce your use of electric lighting, especially during the summer. Switch to LED light bulbs as they are much more energy efficient.


In conclusion, understanding the energy consumption of household appliances is crucial for homeowners. It helps identify appliances that consume the most energy and cost the most money, allowing individuals to take steps to reduce their energy consumption, lower their electricity bills, and have a positive impact on the environment. By upgrading to more energy-efficient appliances, reducing standby power, using natural lighting, and being aware of how much energy common household appliances use, homeowners can save money and become more energy-efficient, while also contributing to a more sustainable future.

If you need assistance calculating the size of a solar system to meet your requirements, send us a WhatApp message, email or give us a call.