Microwaves are one of the most common kitchen appliances in South African homes. They are widely used for reheating food, cooking quick meals, and defrosting frozen items.
With rising electricity prices, many households want to understand how much power a microwave uses and how it affects their electricity bill.
In this guide we explain microwave electricity usage, typical power consumption, and how much it costs to run a microwave in South Africa.
Typical Microwave Power Usage
Most microwaves use between 800 W and 1200 W depending on the model and cooking settings.
Typical examples:
| Microwave Type | Power Usage |
|---|---|
| Compact microwave | 700W – 800W |
| Standard microwave | 900W – 1000W |
| Large microwave | 1100W – 1200W |
Higher wattage microwaves generally cook food faster but also consume more electricity while operating.
Electricity Cost Per Use
Microwaves usually run for a short period of time when heating food.
Example:
Microwave power:
1000W
Heating time:
5 minutes
Energy used:
≈ 0.08 kWh
If electricity costs around R3.00 per kWh, the cost per use is approximately:
≈ R0.24
This means heating food in a microwave typically costs around 20–30 cents per use.
Monthly Microwave Electricity Cost
If a microwave is used four times per day:
Daily cost:
R0.24 × 4 ≈ R0.96
Monthly cost:
R0.96 × 30 ≈ R29
For most households, the electricity cost of using a microwave is relatively low compared to many other kitchen appliances.
Microwave vs Other Kitchen Appliances
| Appliance | Typical Power Usage |
|---|---|
| Microwave | 800W – 1200W |
| Air Fryer | 1500W – 2000W |
| Kettle | 1800W – 2200W |
| Electric Oven | 2000W – 3000W |
Microwaves generally use less power than many other cooking appliances, which can make them an energy-efficient option for heating food.
Tips to Reduce Microwave Electricity Usage
You can reduce electricity consumption by:
- heating only the food you need
- avoiding unnecessarily long heating times
- using appropriate microwave power settings
These simple habits can help reduce electricity usage over time.
Final Verdict
Microwaves typically use between 800W and 1200W of power, depending on the model and cooking settings. Because they operate for relatively short periods, the electricity cost of using a microwave is usually low.
For most households in South Africa, regular microwave use will typically cost around R20 to R40 per month depending on how frequently the appliance is used.
Understanding appliance electricity usage can help households manage energy consumption and reduce electricity costs.
Explore More Appliance Electricity Guides
If you’re comparing kitchen appliance electricity usage, you may also find these guides helpful:
- How Much Electricity Does a Kettle Use in South Africa
- Kettle vs Microwave Electricity Cost
- How Much Electricity Does an Air Fryer Use in South Africa
These guides explain how different appliances affect electricity consumption and help you choose the most efficient option.


