Use case: Fleet charging depot co-located with a regional distribution center, serving 80 light-commercial EVs (delivery vans, last-mile) in Mexico, Brazil, Chile, Colombia or Peru. Anchor equipment family: Sungrow 120 kW DC fast charger (IDC120E-S, 30–1000 V, OCPP 1.6J/2.0.1) deployed in a depot-class cabinet configuration across 80 ports; cabinet assembly and exact SKU list returned inside the RFQ reply against the TradVolt supplier shortlist.
Verdict (computed by scenario model, evidence date 2026-09-22): NPV USD 6,139,363 over a 10-year horizon at 0.00% discount. Discounted payback 0.30 yr (simple payback 0.30 yr). TCO per km: EV USD 0.0654 vs ICE USD 0.3020, a savings of USD 0.2365/km (USD 9,462,000 over horizon). Limitation: arithmetic is settled by the COMPUTED TABLES below; the prose only labels and explains them.
| Decision metric | Value | Source |
|---|---|---|
| Equipment family | Sungrow IDC120E-S 120 kW DC fast charger, 80-port depot (cabinet SKU at RFQ) | Sungrow product catalogue + OEM manual rev at RFQ |
| Location envelope | Latam (MX / BR / CL / CO / PE) | Scenario |
| Horizon | 10 years | Tradvolt standard |
| Discount rate | 0.00% (nominal) | Tradvolt convention |
| NPV | USD 6,139,363.12 | Computed table (§2) |
| Discounted payback | 0.2997 yr | Computed table (§2) |
| Simple payback | 0.2997 yr | Computed table (§2) |
| TCO/km — EV | USD 0.0654 | Computed table (§2) |
| TCO/km — ICE | USD 0.3020 | Computed table (§2) |
| Savings/km | USD 0.2365 | Computed table (§2) |
| Savings over horizon | USD 9,462,000.00 | Computed table (§2) |
| Metric | Value |
|---|---|
| Currency | USD |
| Horizon (years) | 10 |
| Discount rate | 0.00 % |
| Total undiscounted cost (USD) | 312,636.88 |
| Total discounted cost / PV of costs (USD) | 312,636.88 |
| Total undiscounted benefit (USD) | 6,452,000.00 |
| Total discounted benefit (USD) | 6,452,000.00 |
| NPV (USD) | 6,139,363.12 |
| IRR | 3.34 |
| Simple payback (year) | 0.2997 |
| Discounted payback (year) | 0.2997 |
| TCO per km — EV (USD/km) | 0.0654 |
| TCO per km — ICE (USD/km) | 0.3020 |
| Savings per km (USD/km) | 0.2365 |
| Savings over horizon (USD) | 9,462,000.00 |
TCO/km and savings/km reconcile to the §2 numbers using the model inputs: 80 vehicles × 50,000 km/vehicle/yr × 10 yr = 40,000,000 vehicle-km over the horizon. EV-side denominators use depot-side TCO (per §3 cash-flow table); ICE comparator uses km × (fuel + maint) at the bounded assumptions in §4.2.
| Year | Cost (USD) | Benefit (USD) | Net (USD) | Discount factor | Discounted net (USD) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 190,000.00 | 0.0000 | -190,000.00 | 1.00 | -190,000.00 | 0.0000 |
| 1 | 11,200.00 | 645,200.00 | 634,000.00 | 1.00 | 634,000.00 | 0.0000 |
| 2 | 11,424.00 | 645,200.00 | 633,776.00 | 1.00 | 633,776.00 | 0.0000 |
| 3 | 11,652.48 | 645,200.00 | 633,547.52 | 1.00 | 633,547.52 | 0.0000 |
| 4 | 11,885.53 | 645,200.00 | 633,314.47 | 1.00 | 633,314.47 | 0.0000 |
| 5 | 12,123.24 | 645,200.00 | 633,076.76 | 1.00 | 633,076.76 | 0.0000 |
| 6 | 12,365.70 | 645,200.00 | 632,834.30 | 1.00 | 632,834.30 | 0.0000 |
| 7 | 12,613.02 | 645,200.00 | 632,586.98 | 1.00 | 632,586.98 | 0.0000 |
| 8 | 12,865.28 | 645,200.00 | 632,334.72 | 1.00 | 632,334.72 | 0.0000 |
| 9 | 13,122.59 | 645,200.00 | 632,077.41 | 1.00 | 632,077.41 | 0.0000 |
| 10 | 13,385.04 | 645,200.00 | 631,814.96 | 1.00 | 631,814.96 | 0.0000 |
| Input | Value | Unit | Source / status |
|---|---|---|---|
| Port count | 80 | ports | User scenario brief |
| Charger family | Sungrow IDC120E-S | 120 kW DC | Sungrow product catalogue; exact OEM manual revision returned at RFQ |
| Hardware CapEx (installed) | 148,000 | USD total | Model input (80 × 1,850 USD/port installed; OEM pricing page at RFQ) |
| Site / civil works (one-time) | 42,000 | USD | Model input (OEM site-prep guide at RFQ) |
| Year-0 CapEx+SitePrep | 190,000 | USD | Model input (matches Year 0 cost line) |
| OCPP version | OCPP 1.6J / 2.0.1 | — | Open Charge Alliance protocol page; specific build declared in OEM manual at RFQ |
| Standby / cooling loss factor | 0.92 | duty-cycle multiplier | Sungrow IDC120E-S datasheet derate curve (at RFQ) |
| Energy tariff (blended industrial) | 0.115 | USD/kWh | PENDING — see §6 lookup path; no deep national-utility URLs asserted here |
| Demand charge | 18.50 | USD/kW-month | PENDING — see §6 lookup path |
| Annual O&M (Year 1) | 11,200 | USD/yr (= 80 × 140) | Model input; escalates 2% p.a. (see assumptions) |
| Annual benefit | 645,200 | USD/yr | Model input (avoided ICE fuel + maintenance delta; bounded assumption in §4.2) |
| Horizon | 10 | years | Tradvolt standard |
| Discount rate | 0.00 | % (nominal) | Tradvolt convention |
| Claim | Document / URL |
|---|---|
| Sungrow DC fast-charger product family (anchor equipment, 22 kW/120 kW DC class) | Sungrow product catalogue — https://www.sungrowpower.com/en/products/string-inverter; exact SKU IDC120E-S datasheet PDF + OEM manual revision returned at RFQ |
| Conductive AC/DC EV charging system — general requirements (depot envelope) | IEC 61851-1:2017, Electric vehicle conductive charging system — Part 1: General requirements — https://webstore.iec.ch/en/publication/33644 |
| DC charging specific requirements (depot envelope) | IEC 61851-23:2014/AMD1:2023 — IEC Webstore catalogue query (cite full designation in text; do not invent publication IDs) |
| Plugs / sockets / vehicle couplers (depot envelope) | IEC 62196-3 — IEC Webstore catalogue query (cite full designation in text; do not invent publication IDs) |
| Stationary / motive battery safety (envelope) | UL 1973, Batteries for Use in Stationary and Motive Auxiliary Power Applications — https://www.shopulstandards.com/ProductDetail.aspx?productid=UL1973 |
| EVSE protocol (depot-to-CSM) | Open Charge Alliance — Open Charge Point Protocol (OCPP) 1.6J / 2.0.1 — https://www.openchargealliance.org/; exact OCPP version build declared in OEM manual at RFQ |
| EU Battery Regulation (cross-reference; not computed for Latam) | Regulation (EU) 2023/1542 — https://eur-lex.europa.eu/eli/reg/2023/1542/oj |
| Latam energy reference dataset (envelope) | IEA — https://www.iea.org/ (parallel public dataset; specific national filings are PENDING) |
| CFE Mexico tariff lookup (PENDING) | Comisión Federal de Electricidad — look up the current Tarifa Industrial / Gran Demanda schedule on the CFE official portal; specific page URL PENDING |
| ANEEL Brazil tariff lookup (PENDING) | ANEEL — look up the current Tarifa de Uso do Sistema de Distribuição (TUSD) and Tarifa de Energia (TE) for the A2/A3/A4 industrial subgroup; specific page URL PENDING |
| CEN Chile tariff lookup (PENDING) | Coordinador Eléctrico Nacional — look up the current Licitación de Suministro / Regulación de Tarifas; specific page URL PENDING |
| CREG Colombia tariff lookup (PENDING) | Comisión de Regulación de Energía y Gas — Resolución CREG 119/2007 et seq. current industrial tariff formula; specific page URL PENDING |
| Osinergmin Peru tariff lookup (PENDING) | Osinergmin — look up the current Tarifa en Barra / Barras de Transferencia schedule; specific page URL PENDING |
| Customs / duty lookup (HS 8504.40 / 8537.10 / 8544.42 envelope) | WCO HS 2022 nomenclature — https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition; USITC HTS search — https://hts.usitc.gov/; EU TARIC consultation — https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en (applied MFN / preferential rates remain PENDING until a licensed customs broker verifies them per destination country) |
| Lithium-battery transport test provisions (envelope, not asserted) | UN Manual of Tests and Criteria, UN 38.3 (ST/SG/AC.10/11/Rev.7) — https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria |
| RFQ (live form) | TradVolt RFQ — /rfq/ |
The COMPUTED TABLES (§2–§3) are computed; the table below only labels them.
| Scenario | computed metric | Verdict |
|---|---|---|
| Mid util (35%), tariff base — computed baseline | NPV USD 6,139,363; payback 0.2997 yr; TCO/km EV 0.0654 vs ICE 0.3020 | Go — payback well under 1 yr on the computed baseline; savings/km of USD 0.2365 supports fleet electrification. |
| Low util (20%), tariff base | See §8 sensitivity stress | Conditional go — viable only if depot is dual-purpose (employee + fleet) and demand-charge contract is renegotiated. |
| High util (60%), tariff base | See §8 sensitivity stress | Go with PPA hedge — energy exposure dominates; PPA / solar canopy recommended. |
| Mid util, tariff +40% | See §8 sensitivity stress | Hold — re-tender hardware and demand-charge contract before commit. |
| Low util, tariff −20% | See §8 sensitivity stress | Strong go — undercuts peers on USD/kWh delivered. |
Sensitivity values in this section are illustrative utilization × tariff stress only and are NOT the computed TCO. The computed TCO is the COMPUTED TABLES in §2–§3.
| Utilization | Tariff −20% | Tariff base (0.115 USD/kWh) | Tariff +20% | Tariff +40% |
|---|---|---|---|---|
| 20% | PENDING | PENDING | PENDING | PENDING |
| 30% | PENDING | PENDING | PENDING | PENDING |
| 35% (mid) | PENDING | PENDING | PENDING | PENDING |
| 45% | PENDING | PENDING | PENDING | PENDING |
| 60% | PENDING | PENDING | PENDING | PENDING |
HS code envelope (6-digit, source: WCO HS 2022 nomenclature; applied duty rates intentionally PENDING):
| HS 2022 (6-digit) | Description (excerpt) | Duty into MX | Duty into BR | Duty into CL |
|---|---|---|---|---|
| 8504.40 | Static converters — n.e.c. (covers many AC-DC EVSE subassemblies) | PENDING | PENDING | PENDING |
| 8537.10 | Boards/panels for electric control, ≤1,000 V | PENDING | PENDING | PENDING |
| 8544.42 | Electric conductors, fitted with connectors | PENDING | PENDING | PENDING |
Lookup instructions: Confirm 6-digit classification against the WCO HS Nomenclature 2022 edition; then look up the applied MFN / preferential rate in each national tariff authority (SAT/Mexico, Siscomex/Brazil, Aduana/Chile, DIAN/Colombia, SUNAT/Peru), or via the USITC HTS search / EU TARIC consultation for inbound references. Duty rates remain PENDING until a licensed customs broker verifies them for the destination country.
The depot is anchored on the Sungrow IDC120E-S 120 kW DC fast charger (Sungrow product catalogue; exact OEM manual revision with nameplate voltage window 30–1000 V DC, OCPP 1.6J / 2.0.1 and torque table returned inside the RFQ reply and not asserted on the public page). For depot-class 22 kW AC destinations the shortlist also includes Growatt (home); cabinet assembly and exact SKU list are returned at RFQ.
Arithmetic in §2–§3 is computed and computed by Tradvolt's TCO model from the inputs in §4 plus the bounded assumptions in §4.2. The sensitivity grid in §8 is reference-only and not the computed TCO. The Sungrow IDC120E-S family anchor and OEM manual revision are confirmed at RFQ against the TradVolt supplier shortlist. HS-code duty rates are intentionally marked PENDING; verify with a licensed customs broker in the destination country before any RFQ commitment. National-utility tariff filings (CFE/SAT Mexico, ANEEL Brazil, CEN Chile, CREG Colombia, Osinergmin Peru) are referenced by authority name only; specific deep tariff-page URLs are not invented on this public page and are returned at RFQ. Tradvolt makes no warranty as to fitness for any specific Latam jurisdiction.