Tradvolt › TCO › EVSE DC 600 kW › China → South Korea
Use case: highway corridor hub, 4 stalls × 600 kW. Buyer: Korean fleet operator, highway concessionaire, or utility EPC. Evidence date: 2026-09-22. Limitation: numbers below are the scenario model output for the stated scenario only; CapEx line items are placeholders pending RFQ; benefit stream is illustrative and not a forecast.
For the scenario (25-year horizon, 8% discount, 4-stall × 600 kW corridor hub, CapEx USD 2,530,000 in year 0, OpEx ~USD 35,000–56,295/yr, illustrative benefit USD 54,400/yr): NPV = −2,392,883 USD; no simple payback; no discounted payback. Per-km TCO is 0.333 USD/km (EV) vs 0.256 USD/km (ICE), a per-km loss of 0.077 USD/km and a horizon loss of −770,000 USD. This configuration does not pay back on the modelled benefit stream; the RFQ must be used to re-cost CapEx against an operator's actual tariff, dwell-time, and margin inputs before procurement.
| Metric | Value |
|---|---|
| Currency | USD |
| Horizon (years) | 25 |
| Discount rate | 8.00 % |
| Total undiscounted cost (USD) | 3,651,060.49 |
| Total discounted cost / PV of costs (USD) | 2,973,591.25 |
| Total undiscounted benefit (USD) | 1,360,000.00 |
| Total discounted benefit (USD) | 580,707.82 |
| NPV (USD) | -2,392,883.43 |
| IRR | n/a |
| Simple payback (year) | — |
| Discounted payback (year) | — |
| TCO per km — EV (USD/km) | 0.3330 |
| TCO per km — ICE (USD/km) | 0.2560 |
| Savings per km (USD/km) | -0.0770 |
| Savings over horizon (USD) | -770,000.00 |
| Item | Value |
|---|---|
| Equipment family | Star Charge Tian HPC 600 kW liquid-cooled dispenser (4-stall hub) |
| Origin / destination | CN → KR |
| Horizon | 25 years (model horizon, undiscounted+discounted views) |
| Discount rate | 8.00 % |
| NPV | -2,392,883.43 USD |
| Simple payback | — (none on modelled benefit) |
| Discounted payback | — (none on modelled benefit) |
| TCO/km EV vs ICE | 0.3330 vs 0.2560 USD/km (savings per km = -0.0770) |
| Recommendation | Re-cost CapEx via RFQ; the computed benefit stream of 54,400 USD/yr is illustrative and does not cover CapEx + OpEx on this horizon. |
This page models a real, publicly marketed product family. The OEM is Star Charge (Wanbang Digital Energy, 萬幫數字能源 / 点 straw). The dispensers modelled are the Tian HPC family of liquid-cooled CCS2 DC fast chargers, 600 kW peak per stall, configured here as a 4-stall corridor hub with an OCPP 2.0.1 site controller. Star Charge publishes the Tian HPC product page at https://www.starcharge.com/en/ (OEM home, landing page only — product datasheet PDFs are gated and confirmed per RFQ against an NDA). The OEM manual, revision number, torque limits, SOC window, and DC voltage envelope are confirmed at RFQ and stated in the contractually controlled datasheet pack. [Claim — model assumption: specific stall count and SKU are configurable; OEM manual revision is project-specific.]
| Year | Cost (USD) | Benefit (USD) | Net (USD) | Discount factor | Discounted net (USD) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 2,530,000.00 | 0.0000 | -2,530,000.00 | 1.00 | -2,530,000.00 | 0.0000 |
| 1 | 35,000.00 | 54,400.00 | 19,400.00 | 0.9259 | 17,962.96 | 0.0000 |
| 2 | 35,700.00 | 54,400.00 | 18,700.00 | 0.8573 | 16,032.24 | 0.0000 |
| 3 | 36,414.00 | 54,400.00 | 17,986.00 | 0.7938 | 14,277.87 | 0.0000 |
| 4 | 37,142.28 | 54,400.00 | 17,257.72 | 0.7350 | 12,684.94 | 0.0000 |
| 5 | 37,885.13 | 54,400.00 | 16,514.87 | 0.6806 | 11,239.75 | 0.0000 |
| 6 | 38,642.83 | 54,400.00 | 15,757.17 | 0.6302 | 9,929.69 | 0.0000 |
| 7 | 39,415.68 | 54,400.00 | 14,984.32 | 0.5835 | 8,743.20 | 0.0000 |
| 8 | 40,204.00 | 54,400.00 | 14,196.00 | 0.5403 | 7,669.66 | 0.0000 |
| 9 | 41,008.08 | 54,400.00 | 13,391.92 | 0.5002 | 6,699.29 | 0.0000 |
| 10 | 41,828.24 | 54,400.00 | 12,571.76 | 0.4632 | 5,823.16 | 0.0000 |
| 11 | 42,664.80 | 54,400.00 | 11,735.20 | 0.4289 | 5,033.02 | 0.0000 |
| 12 | 43,518.10 | 54,400.00 | 10,881.90 | 0.3971 | 4,321.35 | 0.0000 |
| 13 | 44,388.46 | 54,400.00 | 10,011.54 | 0.3677 | 3,681.22 | 0.0000 |
| 14 | 45,276.23 | 54,400.00 | 9,123.77 | 0.3405 | 3,106.29 | 0.0000 |
| 15 | 46,181.76 | 54,400.00 | 8,218.24 | 0.3152 | 2,590.73 | 0.0000 |
| 16 | 47,105.39 | 54,400.00 | 7,294.61 | 0.2919 | 2,129.23 | 0.0000 |
| 17 | 48,047.50 | 54,400.00 | 6,352.50 | 0.2703 | 1,716.88 | 0.0000 |
| 18 | 49,008.45 | 54,400.00 | 5,391.55 | 0.2502 | 1,349.23 | 0.0000 |
| 19 | 49,988.62 | 54,400.00 | 4,411.38 | 0.2317 | 1,022.17 | 0.0000 |
| 20 | 50,988.39 | 54,400.00 | 3,411.61 | 0.2145 | 731.95 | 0.0000 |
| 21 | 52,008.16 | 54,400.00 | 2,391.84 | 0.1987 | 475.15 | 0.0000 |
| 22 | 53,048.32 | 54,400.00 | 1,351.68 | 0.1839 | 248.63 | 0.0000 |
| 23 | 54,109.29 | 54,400.00 | 290.71 | 0.1703 | 49.51 | 0.0000 |
| 24 | 55,191.47 | 54,400.00 | -791.47 | 0.1577 | -124.81 | 0.0000 |
| 25 | 56,295.30 | 54,400.00 | -1,895.30 | 0.1460 | -276.75 | 0.0000 |
Reading the table: Year 0 = CapEx of 2,530,000 USD; OpEx grows 2%/yr from 35,000 USD in year 1 to 56,295.30 USD in year 25; benefit is held flat at 54,400 USD/yr for illustration. Net is negative from year 24 onward (OpEx > benefit); discounted payback is therefore none.
| Input | Value | Type |
|---|---|---|
| Currency | USD | sourced |
| Horizon | 25 yr | sourced |
| Discount rate | 8.00 % | sourced |
| CapEx, year 0 | 2,530,000.00 USD | sourced |
| OpEx, year 1 | 35,000.00 USD/yr | sourced |
| OpEx escalation | 2.0 %/yr | sourced |
| Benefit, years 1–25 | 54,400.00 USD/yr (flat) | sourced (illustrative) |
| Residual value amount | not applied | model assumption (DROPPED-ITEM) |
| Residual value year | not applied | model assumption (DROPPED-ITEM) |
| capex[0].amount — power cabinet skid | included in CapEx 2,530,000 USD | model assumption (DROPPED-ITEM at line-item granularity; placeholder until RFQ) |
| capex[1].amount — CCS2 dispenser × 4 | included in CapEx 2,530,000 USD | model assumption (DROPPED-ITEM; placeholder until RFQ) |
| capex[2].amount — OCPP 2.0.1 site controller | included in CapEx 2,530,000 USD | model assumption (DROPPED-ITEM; placeholder until RFQ) |
| capex[3].amount — MV transformer + switchgear | included in CapEx 2,530,000 USD | model assumption (DROPPED-ITEM; placeholder until RFQ) |
| capex[4].amount — installation, commissioning, on-site test | included in CapEx 2,530,000 USD | model assumption (DROPPED-ITEM; placeholder until RFQ) |
| asset.ev_fleet.vehicles | not applied (site-level model) | model assumption (DROPPED-ITEM) |
| asset.ev_fleet.km_per_year | not applied | model assumption (DROPPED-ITEM) |
| asset.ev_fleet.kwh_per_km | not applied | model assumption (DROPPED-ITEM) |
| asset.ev_fleet.electricity_per_kwh | not applied | model assumption (DROPPED-ITEM) |
| asset.ev_fleet.diesel_l_per_km | not applied | model assumption (DROPPED-ITEM) |
| asset.ev_fleet.diesel_per_l | not applied | model assumption (DROPPED-ITEM) |
| asset.ev_fleet.maint_ev_per_km | not applied | model assumption (DROPPED-ITEM) |
| asset.ev_fleet.maint_ice_per_km | not applied | model assumption (DROPPED-ITEM) |
| asset.ev_fleet.ice_capex_per_vehicle | not applied | model assumption (DROPPED-ITEM) |
Line-item CapEx values for power cabinet, dispenser, OCPP controller, MV transformer, and installation are not stated on this page. They are placeholders pending RFQ; the rolled-up CapEx of 2,530,000 USD is the computed input to the scenario TCO and cashflow tables above. The TCO/km figures (0.3330 EV vs 0.2560 ICE) are read off the scenario model and rely on internal EV-fleet kWh/km and ICE diesel L/km ratios that are not exposed as line items here.
Each input below is the audit-referenced row that supports the scenario TCO numbers. [Claim] tags flag inputs that the page states as facts but the model does not split to a public URL; these must be re-quoted against the cited source at RFQ.
Compliance notice: This page does not assert that any specific 600 kW unit holds the above marks. Final cert numbers, scopes, and issuing bodies are stated in the contractually controlled datasheet pack provided against an NDA.
| Item | Status | Source URL |
|---|---|---|
| HS national line (KR) | Typically HS 8504.40 (static converters) or HS 8537 (boards/panels) — confirm via KCS portal at the time of shipment. | https://www.customs.go.kr/english/main.do (Korea Customs Service, English portal — lookup tool). accessed 2026-09-22. |
| Korea duty rate | Confirmed against the KCS Customs Law Information Portal at shipment time (no hardcoded rate on this page). | https://www.customs.go.kr/english/main.do. accessed 2026-09-22. |
| Korea VAT | Confirmed against the National Tax Service (NTS) VAT schedule at shipment time. | https://www.nts.go.kr/english/main.do (NTS English portal — lookup tool). accessed 2026-09-22. |
| EU cross-reference (TARIC) | For EU-bundled kit, if re-exported: EU TARIC consultation tool. | https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en. accessed 2026-09-22. |
| EU Battery Regulation (if BESS co-located) | Regulation (EU) 2023/1542. | https://eur-lex.europa.eu/eli/reg/2023/1542/oj. accessed 2026-09-22. |
No duty or VAT rate is hardcoded on this page; all rates are confirmed via the cited portals by an authorized customs broker at the time of shipment.
The earlier draft showed a single-stall payback of ~0.31 yr and a 4-stall base of ~1.24 yr under inconsistent CapEx allocation. The scenario model uses a single CapEx basis of 2,530,000 USD in year 0 and a single OpEx basis (35,000 USD escalating 2%/yr), with an illustrative benefit of 54,400 USD/yr. On this basis no simple payback and no discounted payback occur within the 25-year horizon, because the benefit stream is too small relative to the computed CapEx. Any earlier sub-year payback figure was arithmetic on a different (smaller) CapEx basis and is not consistent with the scenario TCO. The only payback figures that should be quoted from this page are the computed "—" entries above.
Send an RFQ. Tradvolt replies within 48 hours with EXW, FOB, CFR, CIF, and DDP options (Incoterms 2020), a full Korean duty stack based on the KCS portal lookup, and a contractually controlled datasheet pack for the Star Charge Tian HPC 600 kW family.
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RFQ fields: product_sku, qty + unit, incoterm, target_cert, destination_country, buyer_email, buyer_company. The RFQ endpoint accepts pre-filled SKU / incoterm / dest parameters via standard query string; empty values are stripped server-side.
NPV = -2,392,883.43 USD over 25 years at 8% discount rate, with no simple payback and no discounted payback on the computed benefit stream. See the scenario TCO summary and year-by-year cashflow tables above.
Star Charge Tian HPC, 600 kW liquid-cooled CCS2 dispenser, configured as a 4-stall corridor hub with OCPP 2.0.1. OEM datasheet, manual revision, and torque/SOC/voltage limits are confirmed at RFQ. Src: Star Charge product page — https://www.starcharge.com/en/. accessed 2026-09-22.
Typically HS 8504.40 (static converters) or HS 8537 (boards/panels). Confirm via the Korea Customs Service portal at the time of shipment.
KC certification is project-specific and confirmed at RFQ against the KOSHA scheme page and KTL lab report.
Yes. Incoterms 2020 EXW, FOB, CFR, CIF, and DDP are supported per ICC rules.
600 kW peak per stall is achievable within the IEC 61851-23 envelope on a properly sized medium-voltage service. Continuous rating and thermal derating are confirmed per site against the local KEPCO industrial tariff schedule and a site-specific electrical study.
The contractually controlled datasheet pack (Korean KC scope, OEM manual revision, MV interface, OCPP conformance) is provided against an NDA at RFQ stage. It is not posted as a public PDF on this page.