Why include charging loss?

AC→DC conversion and BMS overhead burn 8–12% of metered energy. The default is 10%, adjustable for vehicle / weather / speed.

Is home charging always cheapest?

Usually yes — KEPCO tiers 1–2 sit at ₩100–150/kWh, far below MoE rapid (~₩300) or ultra-rapid (~₩400). But tier 3 (>450 kWh/month) can exceed ₩300/kWh, so total monthly usage matters.

Rapid vs. ultra-rapid — what changes?

Rapid is 50–100 kW, ultra-rapid 200–350 kW. Charging never beats the vehicle/battery’s max-acceptance, and the curve falls off after 80% SoC.

Why does the bill differ from this estimate?

App promos, tiered loyalty discounts, and rate changes at the moment of payment can shift the bill. This tool uses posted tariffs — check the operator app for the final receipt.

Is my input stored remotely?

No. All calculation is in-browser and nothing is sent or stored on a server.

Automotive · 🇰🇷 Korea

Korean EV Charging Cost Calculator

LIVE

Korea EV charging cost across MoE, KEPCO, E-mart operators with estimated driving range.

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About this tool

Korean EV Charging Cost Calculator compares slow (AC 7 / 11 kW), rapid (50 / 100 kW), and ultra-rapid (200 / 350 kW) rates across major Korean operators — Ministry of Environment EV Station, KEPCO, E-mart, SK e-Link, PowerCube, plus tiered home charging — and computes per-session cost and extra driving range from inputs (battery kWh, start/target SoC, 8–12% loss, km/kWh efficiency). KEPCO residential tiers (1 / 2 / 3) and member-vs-non-member rates are auto-applied so you can instantly see where it’s cheapest to charge: home overnight, apartment, or highway rest stop. All calculation runs in your browser.

Use cases

Scenario 1

Charge an Ioniq 5 (78 kWh) to 80%

For 20% → 80% on a 78 kWh Ioniq 5, compare MoE rapid, SK e-Link ultra-rapid, and home AC slow side-by-side — typical gap exceeds ₩10k.

Scenario 2

Check KEPCO progressive-tariff effect

Hitting tier 3 spikes per-kWh cost. Use the tool to test whether one more charge will push the month over the threshold.

Scenario 3

Highway 350 kW vs. urban 100 kW

On a long-distance trip, see whether 350 kW ultra-rapid is worth the premium vs. 100 kW rapid — and how the post-80% slowdown changes the math.

Scenario 4

Range from km/kWh efficiency

Plug in 4.5 km/kWh (winter) vs. 5.5 km/kWh (summer) to see how far the same charge takes you.

Scenario 5

Member vs. non-member rates

Apply the 10–20% member discount across operators to compute monthly savings — and decide if signing up is worth it.

Features

Side-by-side rates: MoE / KEPCO / E-mart / SK e-Link / PowerCube / home tiered
Slow (7 / 11 kW) / rapid (50 / 100 kW) / ultra-rapid (200 / 350 kW) bands
Adjustable charging loss (8–12%)
KEPCO residential progressive tariff auto-applied (tiers 1 / 2 / 3)
Auto-split member vs. non-member rates
Range card based on km/kWh efficiency
In-browser only — vehicle and rate inputs never uploaded

Frequently asked

Q. Why include charging loss?: A. AC→DC conversion and BMS overhead burn 8–12% of metered energy. The default is 10%, adjustable for vehicle / weather / speed.
Q. Is home charging always cheapest?: A. Usually yes — KEPCO tiers 1–2 sit at ₩100–150/kWh, far below MoE rapid (~₩300) or ultra-rapid (~₩400). But tier 3 (>450 kWh/month) can exceed ₩300/kWh, so total monthly usage matters.
Q. Rapid vs. ultra-rapid — what changes?: A. Rapid is 50–100 kW, ultra-rapid 200–350 kW. Charging never beats the vehicle/battery’s max-acceptance, and the curve falls off after 80% SoC.
Q. Why does the bill differ from this estimate?: A. App promos, tiered loyalty discounts, and rate changes at the moment of payment can shift the bill. This tool uses posted tariffs — check the operator app for the final receipt.
Q. Is my input stored remotely?: A. No. All calculation is in-browser and nothing is sent or stored on a server.

Sources / references

Related guides / blog posts

🚗 5 Legal Ways to Save on Korean Car Tax (2026)

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How we run it / disclaimer

This tool is advisory and does not constitute legal, tax, medical, or financial advice. All calculations and document generation run in your browser; inputs are never sent to a server. Ads follow Google AdSense policy and are kept separate from tool accuracy.