Korea Electricity Bill Calculator (Residential Progressive Tariff)
Last updated: 2026-06-25
Your residential electricity bill is the subtotal of base charge + energy charge (3-tier progressive) + climate-environment charge + fuel cost adjustment, plus 10% VAT and a 3.7% electricity industry fund.
The progressive tariff runs Tier 1 (0-300 kWh), Tier 2 (301-450 kWh), and Tier 3 (451 kWh+), with the per-kWh rate rising in each higher tier.
Enter Usage
Estimated billed amount (incl. VAT & power fund)
₩0
| Item | Amount |
|---|---|
| Base charge | |
| Energy charge (progressive total) | |
| Climate-environment charge | |
| Fuel cost adjustment | |
| Electricity subtotal | |
| VAT (10%) | |
| Electricity industry fund (3.7%) | |
| Billed amount (truncated to 10 KRW) |
| Tier | Usage (kWh) | Charge |
|---|---|---|
| Tier 1 (0-300 kWh) | ||
| Tier 2 (301-450 kWh) | ||
| Tier 3 (451 kWh+) |
This result is a reference estimate based on the KEPCO residential low-voltage rate table. It may differ from your actual bill due to seasonal tiers, welfare discounts, and fuel-cost adjustment changes; confirm the exact amount at the KEPCO Cyber Branch.
How to use
- Enter usage — enter the monthly electricity usage from your bill or meter, in kWh.
- Check supply type — this calculates on a residential low-voltage basis (detached and multi-household homes). High voltage (apartments, etc.) has slightly lower rates.
- View result — press Calculate to see the base charge, energy charge (3-tier progressive), climate-environment charge, fuel cost adjustment, VAT, and power fund combined into your billed amount in a table.
How the progressive electricity bill is calculated and what it contains
The residential electricity bill is the sum of several usage-based charges. The key one is the energy charge, to which a 3-tier progressive tariff applies, with the per-kWh rate rising as usage moves into higher tiers. The progressive tariff does not apply the top rate to all usage; instead it multiplies each tier's rate only by the usage that falls within that tier.
For example, if you use 350 kWh in a month, the first 300 kWh use the Tier 1 rate and the remaining 50 kWh use the Tier 2 rate. The base charge also depends on the progressive tier, rising for higher-usage tiers.
| Tier | Usage | Base charge (KRW/household) | Energy charge (KRW/kWh) |
|---|---|---|---|
| Tier 1 | 0-300 kWh | 910 | 120.0 |
| Tier 2 | 301-450 kWh | 1,600 | 214.6 |
| Tier 3 | 451 kWh+ | 7,300 | 307.3 |
Beyond the energy charge, a climate-environment charge (about 9.0 KRW/kWh, covering renewable-energy costs) and a fuel cost adjustment (about 5.0 KRW/kWh, varying quarterly with global fuel prices) are added in proportion to usage. The total of these is the electricity subtotal, on which a 10% VAT and a 3.7% electricity industry fund are levied to produce the final billed amount. The billed amount is truncated to the nearest 10 KRW.
To learn more about the progressive tariff and saving tips, see the Korea Electricity Progressive Tariff Explained guide. For the extra cost of summer air-conditioner use, check the Air Conditioner Cost Calculator separately.
Frequently Asked Questions (FAQ)
How is the electricity progressive tariff applied?
Korea's residential electricity uses a 3-tier progressive tariff where the per-kWh rate rises as usage moves into higher tiers. This calculator splits usage into Tier 1 (0-300 kWh), Tier 2 (301-450 kWh), and Tier 3 (451 kWh and up), applying each tier's rate only to the usage within that tier. For example, at 350 kWh the first 300 kWh use the Tier 1 rate and the remaining 50 kWh use the Tier 2 rate.
What charges are included in the electricity bill?
The bill is the electricity subtotal (base charge + energy charge (progressive) + climate-environment charge + fuel cost adjustment) plus 10% VAT and a 3.7% electricity industry fund. VAT and the fund are levied on the electricity subtotal, and the fund is truncated to the nearest 10 KRW.
Will this calculator match my actual bill exactly?
This calculator is a reference estimate based on the KEPCO residential low-voltage rate table. Your actual bill can differ due to seasonal tiers (expanded summer tiers), welfare discounts, super-user rates, prorated billing by meter-reading date, and changing fuel-cost adjustment rates. Confirm the exact amount on your KEPCO Cyber Branch bill.
How do low-voltage and high-voltage rates differ?
Detached and multi-household homes that contract directly with KEPCO usually get residential low voltage, while apartments that receive high voltage and step it down get residential high voltage. High voltage has lower base and energy charges, so the same usage tends to cost less. This calculator uses the low-voltage basis.
Are there ways to reduce the electricity bill?
Because of the progressive tariff, the most effective step is to avoid pushing usage into Tier 3 (451 kWh and up). Cutting standby power, using high-efficiency appliances, keeping the air conditioner at 26-28°C, and cleaning filters lower usage and prevent entry into the higher-priced tiers, which can cut the bill substantially.
Related calculators & guides
Air Conditioner Cost Calculator
Estimate the extra air-conditioner electricity cost from power, hours, and days.
City Gas Bill Calculator
Estimate your city gas bill from usage (㎥).
Water Bill Calculator
Estimate your water bill using progressive usage tiers (㎥).
Korea Electricity Progressive Tariff Explained
A guide to the progressive structure and ways to save.
Last updated: 2026-06-25