If this is your first summer in South Korea, your electricity bill may surprise you.
Korean summers are extremely hot and humid, and many people use air conditioners almost every day during July and August. Because of this, electricity usage can rise very quickly.
Why Electricity Bills Increase So Much in Korea
In Korea, electricity pricing is not always flat. Using more electricity can move you into a higher pricing section, which means the cost per kWh becomes more expensive.
This is one reason why heavy air conditioner use during summer can dramatically increase monthly bills.
Average Summer Electricity Costs in Korea
| Living Situation | Estimated Summer Bill |
|---|---|
| Small studio / one-room | ₩30,000 ~ ₩80,000 |
| Using AC every day | ₩80,000 ~ ₩150,000+ |
| Large apartment / family home | ₩200,000+ |
Air Conditioners Use the Most Electricity
The biggest reason for high summer electricity bills in Korea is air conditioner usage.
Many older Korean apartments also have weaker insulation, meaning cool air escapes easily during hot weather.
How Foreigners Can Save Money on Electricity
1. Use Eco Mode
Most Korean air conditioners include an energy-saving or eco mode. This can help reduce electricity usage significantly.
2. Do Not Set the Temperature Too Low
Keeping the room at 24°C to 26°C is usually more efficient than setting the AC to 18°C.
3. Use a Fan Together with the AC
A small fan can circulate cool air more effectively, helping the room feel cooler without lowering the temperature too much.
4. Close Curtains During the Day
Sunlight can quickly heat small Korean apartments. Blocking direct sunlight helps reduce cooling costs.
5. Turn Off the AC When Leaving
Leaving the air conditioner running for many hours while outside can noticeably increase your bill.
Common Summer Problems in Korea
- Humidity makes rooms feel hotter
- Electricity bills can spike suddenly in August
- Older buildings cool down slowly
- Top-floor apartments become extremely hot
Good News for Short-Term Residents
If you live in a goshiwon, Airbnb, or some dormitories, electricity may already be included in the monthly rent.
Always check your housing contract carefully before moving in.
Final Thoughts
Summer in Korea can be intense, especially for foreigners not used to the humidity and heat.
Air conditioning is almost essential during July and August, but electricity costs can increase quickly if you are not careful.
Using energy-saving habits can help you stay comfortable while keeping your monthly bills under control.