Korean Electricity Bill Calculator
Enter monthly kWh to get the full bill: 3-tier progressive tariff, summer relaxation, VAT and power fund. KEPCO residential 2024 rates.
Estimated bill
Applied tier: 2 · Average rate 194.2 KRW/kWh
- Base fee
- 1,600 KRW
- Energy charge
- 45,460 KRW
- Climate-environment charge
- 2,700 KRW
- Fuel adjustment
- 1,500 KRW
- Electricity subtotal
- 51,260 KRW
- VAT (10%)
- 5,126 KRW
- Power fund (3.7%)
- 1,890 KRW
| Tier | Usage | Rate | Charge |
|---|---|---|---|
| 1 | 200 kWh | 120 | 24,000 |
| 2 | 100 kWh | 214.6 | 21,460 |
KEPCO residential 2024 rates. Climate 9 / fuel 5 KRW/kWh assumed. Special discounts not included.
What this tool does
The Korean electricity bill calculator estimates your residential bill from monthly kWh usage. It applies KEPCO's 3-tier progressive tariff (low/high voltage), summer relaxation, climate-environment charge, fuel adjustment, 10% VAT, and 3.7% power fund — giving a figure close to the actual bill. See in advance how much the bill jumps when summer air conditioning pushes you into a higher tier.
Who uses this
- Estimate the bill before heavy summer AC use
- See when crossing a tier boundary (200/400 kWh) spikes the cost
- Compare low-voltage (house/villa) vs high-voltage (large apt) rates
- Simulate savings from dropping one tier through conservation
- Verify the electricity portion of apartment maintenance fees
How to use (3 steps)
- 1Enter monthly usage (kWh) from your bill or the KEPCO app.
- 2Choose supply type. Houses/villas are usually low voltage; large apartment complexes use high voltage (bulk contract).
- 3Check summer relaxation for July-August. Tier 1 expands to 300 kWh and tier 2 to 450 kWh.
Bill formula (KEPCO residential 2024)
Energy charge = usage per tier × tier rate (progressive) Low-voltage tier 1 (0-200kWh) 120.0, tier 2 (-400) 214.6, tier 3 307.3 KRW Base fee = base of the highest tier reached (910 / 1,600 / 7,300 KRW) Climate-environment charge = usage × 9.0 KRW Fuel adjustment = usage × 5.0 KRW (varies quarterly) Subtotal = base + energy + climate + fuel VAT = subtotal × 10% Power fund = subtotal × 3.7% Total = sum (rounded down to 10 KRW) Summer (Jul 1-Aug 31): tier 1 = 300 kWh, tier 2 = 450 kWh
Real examples
Example 1: Low voltage 200 kWh (tier 1)
Base 910 + energy 24,000 (200×120) + climate 1,800 + fuel 1,000 = 27,710. VAT 2,771 + fund 1,020 = total ~31,500 KRW. ~158 KRW/kWh average.
Example 2: Low voltage 350 kWh (into tier 2)
Base 1,600 + energy 56,190 (200×120 + 150×214.6) + climate + fuel. Tier 2 rate is 1.8× tier 1, so the extra 150 kWh raises the bill sharply.
Example 3: Summer 300 kWh savings
Normally 300 kWh hits tier 2, but summer relaxation keeps it in tier 1. Base 1,600→910 plus 100 kWh at 120 instead of 214.6 saves about KRW 10,000.
Frequently asked questions
What exactly is the progressive tariff?+
A system charging higher rates as usage rises. Residential has 3 tiers: 120 KRW up to 200 kWh, 214.6 up to 400, 307.3 above. It encourages conservation. Industrial and general rates have no progressive structure.
Is my home low or high voltage?+
Houses, villas, and multi-family units are mostly low voltage (per-unit metering). Large apartment complexes use a high-voltage bulk contract distributed by management. High-voltage rates are ~12% cheaper. It's shown on the bill.
Why are summer/winter bills higher?+
AC and heating raise usage, pushing you into higher tiers. The same 100 kWh costs 2.5× more in tier 3 (307) than tier 1 (120). Summer (Jul-Aug) and parts of winter get relaxed tiers, but bills still run higher than mild months.
What are the climate and fuel charges?+
The climate-environment charge (9 KRW/kWh) covers renewables and emissions; the fuel adjustment (±5) reflects quarterly generation fuel costs (coal, LNG). Both scale with usage.
Is there VAT on electricity?+
Yes. 10% VAT and a 3.7% power fund are added on top of the subtotal, making the final bill about 14% higher than the electricity subtotal.
Are welfare or essential-usage discounts included?+
No. The essential-usage guarantee (up to 4,000 KRW off under 200 kWh), multi-child/large-family discounts, and welfare discounts are separate. Check your KEPCO bill for the exact amount.
Cautions
- •KEPCO residential 2024 rates. Tariffs change quarterly/yearly.
- •Fuel adjustment (±5 KRW) changes quarterly — actual may differ.
- •Essential-usage, welfare, and multi-child discounts not included.
- •High-voltage apartment bills depend on the complex's distribution method.
- •The definitive bill is from KEPCO (paper or Cyber Branch).
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Last reviewed: 2026-05-30