Import Solar Panel 620W from China to Mexico — Factory Rooftop TCO & Payback

0. Decision Snapshot (scenario model)

1. Capital Expenditure (CapEx) — Factory Rooftop 620W System

Reference system: 1,200 × LONGi Hi-MO 7 LR7-66HGD-620M = 744 kWp DC installed capacity on an industrial rooftop in central Mexico. PV module family page (publicly published by LONGi): https://www.longi.com/en/products/modules/hi-mo-7/. The 620 W HPDC variant is documented in the Hi-MO 7 datasheet pack (LONGi LR7-66HGD-620M); datasheet PDF issued with the model is available on request via RFQ. Nominal limits per the LONGi Hi-MO 7 product manual family: HPDC 66-cell bifacial mono, 1500 V DC max system voltage, operating temperature −40 °C to +85 °C.

1.1 Indicated CapEx line items (inputs not supplied to model)

The scenario file did not populate the eleven CapEx line items. The table below lists the line items the buyer must populate to close the model; values are not assumed.

[Claim | Src: LONGi Hi-MO 7 product page (LONGi Green Energy Technology Co., Ltd.) | URL: https://www.longi.com/en/products/modules/hi-mo-7/ | accessed 2026-09-21] — OEM module family page used to identify the 620 W HPDC variant (LR7-66HGD-620M). [Claim | Src: LONGi corporate profile (LONGi Green Energy Technology Co., Ltd.) | URL: https://www.longi.com/en/about-longi/ | accessed 2026-09-21] — supplier identity. [Claim | Src: Sungrow string-inverter product range (incl. SG125HT, datasheet confirmed at RFQ) | URL: https://www.sungrowpower.com/en/products/string-inverter | accessed 2026-09-21] — inverter OEM reference. [Claim | Src: K2 Systems PV mounting systems | URL: https://k2-systems.com/en/ | accessed 2026-09-21] — racking OEM reference; specific rail/kit model + manual rev confirmed at RFQ. [Claim | Src: Schletter Group product catalogue | URL: https://www.schletter-group.com/mounting-systems/product-catalog/ | accessed 2026-09-21] — racking OEM reference.

2. Mexico Import Duty Stack PENDING — lookup

All rates below are placeholders pending lookup in the official Mexico SIAVI portal under the TIGIE tariff schedule. Final classification must be confirmed by a licensed customs broker before any RFQ is awarded.

[Claim | Src: Mexico SIAVI — tariff-line lookup portal (Secretaría de Economía) | URL: https://www.siavi.economia.gob.mx/ | accessed 2026-09-21] — official Mexican import-duty portal. Specific tariff lines (e.g. 8541.43) must be confirmed against the official TIGIE schedule. [Claim | Src: SAT (Servicio de Administración Tributaria) — customs authority | URL: https://www.sat.gob.mx/ | accessed 2026-09-21] — official Mexican customs documentation. CPTPP and other FTA preferences must be confirmed against the originating exporter's certificate of origin.

3. Operating Expenditure (OpEx) — Annual

OpEx for a factory-rooftop system is dominated by displaced grid energy cost; maintenance and insurance are minor. The scenario model returned zero annual cost; the bounded defaults below are explicit model assumptions the buyer must replace before publication of a buyer-facing OpEx figure. All default values are explicitly marked as model assumptions, not sourced facts.

3.1 Yield & tariff inputs used by the model (bounded model assumptions)

[Claim | Src: CFE (Comisión Federal de Electricidad) — GDMTH/DAC industrial tariff schedule portal | URL: https://app.cfe.gob.mx/Aplicaciones/CCFE/Tarifas/ | accessed 2026-09-21] — official Mexican state utility tariff portal (confirmation source; specific schedule PENDING).

4. TCO Summary, Payback & Sensitivity ILLUSTRATIVE — NOT A QUOTE

The figures below are the verbatim output of the scenario TCO model on the scenario as supplied (USD, 25-year horizon, 8.00% discount). All CapEx and OpEx line items were empty in the scenario file, so payback, IRR, and LCOE are reported as n/a — CapEx not populated (see §0 verdict). The model's energy and benefit cash flows are reproduced verbatim from the computed run.

4.1 Year-by-year cash flow (computed run, verbatim)

4.2 Input Assumptions (verbatim)

4.3 Simple-Payback Arithmetic (form)

Year-1 energy produced = 744 kWp × 1,500 kWh/kWp = 1,116,000 kWh
Year-1 benefit (computed) = USD 75,330.00
Net CapEx = Gross CapEx + Duty + IVA + Freight + Broker − Incentives (all DROPPED-ITEM)
Simple payback (years) = Net CapEx ÷ Year-1 benefit — n/a — CapEx not populated

4.4 Sensitivity Matrix (year-1 benefit only — payback years omitted)

The sensitivity below shows the year-1 benefit (kWh × tariff) across a tariff × yield range using the computed 1,500 kWh/kWp base yield. Payback years are intentionally omitted — they require CapEx inputs that the scenario did not supply.

Tariff column 0.0675 USD/kWh is the model's bounded default used to reproduce the computed Year-1 benefit (USD 75,330.00 = 1,116,000 kWh × 0.0675). Other tariff columns are bracketing values for sensitivity only and are not a sourced CFE tariff quote. Confirm displaced tariff against the live CFE GDMTH/DAC schedule before procurement.

5. Compliance & Certifications

Compliance scope depends on the project offtaker, the Mexican NOM framework, and the buyer's downstream certification requirements. Tradvolt does not publish third-party logos or certificate numbers without authorization. The LONGi Hi-MO 7 LR7-66HGD-620M is typically offered with IEC 61215 / IEC 61730 and UL 61730 certificates issued by accredited certification bodies — confirm the specific certificate number against the OEM-issued certificate document accompanying each shipment.

• IEC 61215-1:2021 (ed 2) — Terrestrial PV modules, design qualification and type approval, Part 1: Test requirements (TC 82). IEC webstore document page: https://webstore.iec.ch/en/publication/61345. Pairs with IEC 61215-1-1:2021 for crystalline-silicon-specific requirements (IEC webstore: https://webstore.iec.ch/en/publication/61346).
• IEC 61730-1:2016 (ed 2) — PV module safety qualification, Part 1: Requirements for construction (TC 82). IEC webstore document page: https://webstore.iec.ch/en/publication/25674. Construction requirements vs shock/fire/mechanical hazards; pairs with IEC 61730-2.
• UL 61730-1 — Photovoltaic (PV) Module Safety Qualification, Part 1 (UL Solutions). UL Standards product page: https://www.shopulstandards.com/ProductDetail.aspx?productId=UL61730-1. North-American PV-module safety standard.
• IEC 62446-1:2016 — PV systems, requirements for testing, documentation and maintenance, Part 1: Grid connected systems (TC 82). IEC webstore document page: https://webstore.iec.ch/en/publication/24057. Commissioning documentation baseline.
• IEC 62109-1:2010 / IEC 62109-2:2011 — Safety of power converters for use in PV power systems, Parts 1 & 2 (TC 82). IEC webstore document pages: https://webstore.iec.ch/en/publication/6470 and https://webstore.iec.ch/en/publication/6471. PCE/inverter safety baseline.
• NOM (Normas Oficiales Mexicanas) — Mexican mandatory standards applicable to electrical installations and interconnection with CFE. SE catalogue: https://www.gob.mx/se/acciones-y-programas/compra-venta-y-contratacion-de-normas-oficiales-mexicanas-nom.

[Claim | Src: IEC webstore — IEC 61215-1:2021, IEC 61215-1-1:2021, IEC 61730-1:2016, IEC 62446-1:2016, IEC 62109-1:2010, IEC 62109-2:2011 (TC 82) | URLs above | accessed 2026-09-21] — international PV-module and inverter safety/qualification standards. [Claim | Src: UL Solutions — UL 61730-1 (PV module safety) | URL: https://www.shopulstandards.com/ProductDetail.aspx?productId=UL61730-1 | accessed 2026-09-21] — North-American PV-module safety certification. [Claim | Src: Secretaría de Economía (SE), Mexico — NOM catalogue | URL: https://www.gob.mx/se/acciones-y-programas/compra-venta-y-contratacion-de-normas-oficiales-mexicanas-nom | accessed 2026-09-21] — Mexican mandatory standards. Specific certificate numbers and issuers must be confirmed against the OEM-issued certificate document accompanying each shipment.

6. Frequently Asked Questions

• What HS code applies to 620W solar panels imported into Mexico? Lookup PENDING via Mexico SIAVI / TIGIE on the official SAT/SE portal. Photovoltaic cells and assemblies typically fall under HS heading 8541 (commonly 8541.43). Final classification must be verified against the official tariff schedule before customs clearance.
• Which certifications are required for the LONGi Hi-MO 7 LR7-66HGD-620M in Mexico? Common frameworks include IEC 61215-1:2021 (TC 82), IEC 61730-1:2016 (TC 82), and UL 61730-1. Verify applicable standards and certificate numbers with the project offtaker and the Mexican NOM framework before procurement.
• How is payback calculated in this TCO? Simple payback = Net CapEx (landed cost minus incentives) ÷ Year-1 benefit (kWh produced × tariff displaced). The figure on this page is the scenario model's output for the scenario as supplied; CapEx inputs were not populated, so payback is reported as n/a — CapEx not populated. The computed Year-1 benefit is USD 75,330.00. Final value depends on actual landed cost, freight lane, BoS, financing, and CFE industrial tariff schedule.
• What is the typical OpEx saving for a Mexican factory rooftop 620W array? Benefit = annual kWh yield × displaced grid tariff (CFE industrial tariff, GDMTH or DAC rate). The scenario model returns Year-1 benefit = USD 75,330.00 at the model's bounded tariff/yield defaults (Year-1 energy 1,116,000 kWh; tariff and yield are explicit bounded model assumptions, not sourced figures). Final figure must be confirmed against the current CFE tariff schedule and site-specific PV yield simulation.
• Can Tradvolt provide BoS components (inverters, racking, DC cabling)? BoS scope depends on project specification. Submit an RFQ via /rfq/ with required SKUs and quantities; Tradvolt replies within 48 hours.
• What freight lane is typically used for CN→MX solar shipments? Common lanes include Shanghai / Ningbo → Manzanillo or Lázaro Cárdenas (Pacific coast), with inland drayage to the project site. Final lane depends on Incoterm, container size, and project location. Shipping documents per FIATA: https://fiata.org/. ISPM 15 wood-packaging compliance per IPPC ISPMs: https://www.ippc.int/en/core-activities/standards-setting/ispms/. Incoterms 2020 rules per ICC: https://iccwbo.org/business-solutions/incoterms-rules/incoterms-2020/.

Next Step — Request a Quote

Submit the form below for a LONGi Hi-MO 7 LR7-66HGD-620M module and BoS package priced CIF or DAP to your Mexican site. Tradvolt replies within 48 hours. Use the RFQ to lock the inputs in §1, §2, and §4 above.