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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.

kWh

Estimated bill

Total bill
58,270KRW

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
TierUsageRateCharge
1200 kWh12024,000
2100 kWh214.621,460

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)

  1. 1Enter monthly usage (kWh) from your bill or the KEPCO app.
  2. 2Choose supply type. Houses/villas are usually low voltage; large apartment complexes use high voltage (bulk contract).
  3. 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).

Last reviewed: 2026-05-30

Korean Electricity Bill Calculator — progressive tariff