Korea Electricity Bill: Progressive Rates Explained

Your Korea electricity bill at home is set by a progressive three-tier tariff: the more you use in a month, the higher the price per kWh for the units above each threshold. A household using 300 kWh pays roughly 58,000 won including tax; at 500 kWh the bill is about 127,000 won. The jump is not linear, and the reason is a base charge that changes with the tier you reach.

The three tiers of a Korea electricity bill

Tier	Monthly usage	Energy rate	Base charge
1	Up to 200 kWh	120.0 won/kWh	910 won
2	201–400 kWh	214.6 won/kWh	1,600 won
3	Above 400 kWh	307.3 won/kWh	7,300 won

Only the units inside each band are charged at that band's rate, but the base charge is the one for the highest tier you reach, applied once. Two surcharges are added per kWh (a climate-environment charge of 9 won and a fuel-cost adjustment of 5 won), then 10% VAT and a 3.7% power-industry fund. That is why 401 kWh costs noticeably more than 400 kWh: the base charge moves from 1,600 to 7,300 won and the extra unit is billed at 307.3 won.

What typical usage costs

Monthly usage	Estimated bill (tax included)
200 kWh	about 31,000 won
300 kWh	about 58,000 won
400 kWh	about 84,000 won
500 kWh	about 127,000 won

In July and August the thresholds shift up by 100 kWh (tier 1 to 300 kWh, tier 2 to 450 kWh), which softens summer air-conditioning bills. A one-person apartment without air conditioning usually lands in tier 1; a family running an AC unit in August often reaches 400–500 kWh.

Where the bill shows up

If you live in an officetel or apartment, electricity is usually bundled into the monthly maintenance fee (gwanlibi) rather than billed separately, and the building may apply its own contract terms. Standalone houses and some villas receive a KEPCO bill directly, on paper or through the KEPCO app. Meter reading dates differ by district, so the "month" on your bill may not match the calendar month.

In my experience the single most useful number for a newcomer is the 400 kWh line. If your building shows usage on the maintenance statement, check it in the first week after the reading date: staying a few kWh under 400 saves more than any other habit, because it avoids both the 7,300-won base charge and the top rate. Unplugging always-on devices, switching to LED bulbs and using a timer on a water heater are usually enough to hold that line outside of peak summer.

Summary

1. Three tiers: 120 / 214.6 / 307.3 won per kWh, thresholds at 200 and 400 kWh
2. Base charge follows the highest tier reached: 910, 1,600 or 7,300 won
3. July–August thresholds rise by 100 kWh
4. Apartments usually bill electricity inside the maintenance fee

To estimate a bill from your own kWh, use the Korea electricity bill calculator. For what the maintenance fee covers and how apartment sizes are quoted, see Korean Apartment Sizes, and for paying utility bills by card, see Paying in Korea.