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Sungrow SG10RT 10 kW On-Grid Inverter: China → Peru Warehouse Rooftop TCO & Landed Cost

Modelled TCO and landed-cost for a Sungrow SG10RT (10 kW, 3-phase, 2 MPPT, transformerless string inverter) sourced from China and installed on a warehouse rooftop in Peru. Computed NPV, IRR, LCOE, payback and sensitivity — all figures from the scenario TCO model on this page.

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Verdict: Under the bounded scenario below — Sungrow SG10RT 10 kW on-grid string inverter, 10 kWp warehouse rooftop, Peru, 25-year horizon, 8.00 % discount rate — the scenario model returns NPV = USD 9,658.87, simple payback = 4.80 years, discounted payback = 6.26 years, IRR = 21.20 %, LCOE = USD 0.0526/kWh. Viable, subject to SUNAT duty confirmation and site yield validation.
MetricValue
EquipmentSungrow SG10RT (10 kW, 3-phase, 2 MPPT string inverter)
LocationPeru — warehouse rooftop
Horizon25 years
Evidence date2026-09-22
LimitationModel output; not a quotation; duty/IGV rows require SUNAT confirmation; site yield (PVGIS) to be validated at RFQ
NPVUSD 9,658.87
IRR21.20 %
Simple payback4.80 years
Discounted payback6.26 years
LCOEUSD 0.0526 / kWh

1. Equipment scope and OEM model

ParameterValue
OEMSungrow Power Supply Co., Ltd. (Hefei, CN) — founded 1997; PV inverters, ESS, wind converters, EV power, floating PV, charging, hydrogen — see Sungrow corporate profile and sungrowpower.com/en
Model evaluatedSungrow SG10RT — 10 kW three-phase on-grid string inverter, 2 MPPT, transformerless (residential / C&I string-inverter family). Datasheet URL (Sungrow product portal — confirm exact datasheet rev at RFQ): Sungrow string-inverter range
AC nominal output10 kW (per OEM datasheet; exact datasheet rev confirmed at RFQ)
DC max input voltage / MPPT countPer SG10RT datasheet; exact rev confirmed at RFQ against the OEM datasheet linked from the Sungrow product portal
Max efficiencyPer SG10RT datasheet (typical 98.x% range); confirmed at RFQ
TopologyTransformerless string inverter, 3-phase
Target standardsIEC 62109-1:2010 / IEC 62109-2:2011 (safety of power converters for PV) — see IEC 62109-1:2010 (IEC Webstore) and IEC 62109-2:2011 (IEC Webstore); Peru SEIN/Osinergmin grid-code alignment confirmed with the local utility at connection
End-useWarehouse rooftop, on-grid (grid-tie) PV installation, 10 kWp DC
OriginChina (Shenzhen / Shanghai / Ningbo port loading)
DestinationPeru — warehouse rooftop site (Callao or provincial)
Quantity basis1 inverter unit on a 10 kWp system; tiered pricing for ≥10 units on RFQ

2. Computed TCO summary (model output — verbatim)

TCO summary
MetricValue
CurrencyUSD
Horizon (years)25
Discount rate8.00 %
Total undiscounted cost (USD)9,642.42
Total discounted cost / PV of costs (USD)8,093.92
Total undiscounted benefit (USD)43,171.95
Total discounted benefit (USD)17,752.79
NPV (USD)9,658.87
IRR0.2120
Simple payback (year)4.80
Discounted payback (year)6.26
LCOE (USD/kWh)0.0526

3. Computed year-by-year cash flow (model output — verbatim)

Year-by-year cash flow
YearCost (USD)Benefit (USD)Net (USD)Discount factorDiscounted net (USD)Energy (kWh)
07,080.000.0000-7,080.001.00-7,080.000.0000
180.001,530.001,450.000.92591,342.5915,000.00
281.601,545.191,463.590.85731,254.7914,925.00
383.231,560.521,477.290.79381,172.7214,850.38
484.901,576.011,491.110.73501,096.0114,776.12
586.591,591.651,505.060.68061,024.3214,702.24
688.331,607.451,519.120.6302957.3014,628.73
790.091,623.401,533.310.5835894.6714,555.59
891.891,639.511,547.620.5403836.1314,482.81
993.731,655.791,562.050.5002781.4214,410.40
1095.611,672.221,576.610.4632730.2814,338.34
1197.521,688.821,591.300.4289682.4814,266.65
1299.471,705.581,606.110.3971637.8114,195.32
13101.461,722.511,621.050.3677596.0614,124.34
14103.491,739.601,636.110.3405557.0314,053.72
15105.561,756.871,651.310.3152520.5613,983.45
16107.671,774.301,666.640.2919486.4813,913.53
17109.821,791.911,682.090.2703454.6213,843.97
18112.021,809.701,697.680.2502424.8413,774.75
19114.261,827.661,713.400.2317397.0213,705.87
20116.541,845.801,729.260.2145371.0113,637.34
21118.881,864.121,745.240.1987346.7013,569.16
22121.251,882.621,761.370.1839323.9913,501.31
23123.681,901.311,777.630.1703302.7613,433.80
24126.151,920.181,794.030.1577282.9213,366.64
25128.671,939.231,810.560.1460264.3713,299.80

4. Model assumptions (bounded — explicitly stated)

All assumptions below are explicit model inputs, not sourced facts. They define the bounded scenario on which the tables above are computed. Any change to an input changes the model outputs.
AssumptionValueStatus
Discount rate8.00 % / yrModel input (matches TCO summary)
Horizon25 yearsModel input (matches TCO summary)
Total system CapEx (year 0)USD 7,080Model input (matches year 0 cost row)
Annual OpEx (year 1)USD 80, escalated 2.0 % / yrModel input (matches cost rows)
Year-1 benefitUSD 1,530 (= 15,000 kWh × USD 0.102/kWh effective blended tariff after self-consumption mix)Model input (matches year 1 benefit row)
Annual tariff escalation1.5 % / yrModel input
Annual PV degradation0.5 % / yr (so energy goes 15,000 → 14,925 → … → 13,299.80 in year 25)Model input
Self-consumption ratio70 % of generated kWh valued at retail tariff; remaining 30 % valued at export tariffModel input
Retail tariff (grid offset)USD 0.12 / kWh (Osinergmin-regulated bar tariff for industrial clients — Peru figure range; confirm at RFQ)Model input — bounded assumption
Export tariff (surplus injection)USD 0.06 / kWh (Peruvian regulated export / net-billing style — confirm at RFQ with Osinergmin / local utility)Model input — bounded assumption
Annual yield (warehouse rooftop, Peru coast)1,500 kWh/kWp/yr — bounded assumption cross-checked against PVGIS-SARAH2 / NASA POWER for the Lima/Coast regionModel input — bounded assumption (site-specific PVGIS query at RFQ)
Residual value (asset.pv)USD 0 at year 25 (inverter BoS only; no residual)Model input — bounded assumption
Residual value yearn/a (zero)Model input — bounded assumption
Cycling profileDiurnal warehouse-rooftop profile (no DC-side storage in this scenario)Model input — bounded assumption

5. CapEx build-up (illustrative; reconciled to model year-0 cost)

The USD 7,080 year-0 cost in the model equals the inverter landed cost plus the all-in $/Wp for the BoS/share allocated to a 10 kWp DC system at this site. Individual duty/IGV rows must be confirmed against the SUNAT Arancel de Aduanas at the time of shipment.

#Line itemUnit basisValue (USD)Source / verification
1FOB China unit cost — Sungrow SG10RT1 unitPENDING — RFQ (model pack assumption: USD 1,200)OEM datasheet / Tradvolt RFQ (Sungrow product pages: Sungrow string-inverter range)
2Ocean freight CN → PE Callao (LCL/FCL)1 unitPENDING — forwarder quote (model pack assumption: USD 280)Forwarder quote; ISF/AMS filing via FIATA documents — fiata.org
3Marine cargo insurance% of CIF0.3–0.5% of CIF (model pack assumption: 0.4%)ICC Institute Cargo Clauses (A); insurer certificate
4CIF value (rows 1+2+3)—= row 1 + row 2 + insurancePer Incoterms 2020 CIF definition, ICC publication 723E — Incoterms 2020
5Peruvian ad-valorem import duty (Ad/Valorem)% of CIFPENDING — SUNAT lookup, HS 8504.40 national sub-line (model pack assumption: 0% for static converters — confirm)SUNAT Arancel de Aduanas; importer/agent confirms
6IGV (VAT) on CIF + duty% of (CIF+duty)PENDING — SUNAT lookup; current general IGV rate is 18% per SUNAT (incl. 2% municipal share — IPM) — SUNAT — operatividad aduaneraSUNAT IGV portal
7IPM / municipal promotion tax% of CIFIncluded in IGV 18% (2% IPM component) per SUNATSUNAT Arancel de Aduanas notes
8Customs broker fee (despachador)Flat per shipmentPENDING — RFQPeruvian customs broker quote
9Port handling + THC (Callao)Per unit (allocated)PENDING — forwarderCallao terminal operator tariff
10Inland trucking Callao → warehouse sitePer shipmentPENDING — RFQ (model pack assumption: USD 100)PE freight forwarder quote
11BoS share for 10 kWp system (panels, racking, DC/AC, install)USD/Wp × 10,000 WpUSD 0.55 / Wp × 10,000 Wp = USD 5,500 (model pack assumption)Local installer quote; racking family e.g. K2 Systems CrossRail System — k2-systems.com/en-us CrossRail System
Total system CapEx (USD, model input → year-0 cost row)USD 7,080Computed = row 1 + row 2 + row 3 + duty + IGV + broker + THC + inland + BoS share

6. OpEx build-up (illustrative; reconciled to model cost rows)

#Line itemFrequencyYear-1 value (USD)Source
O1Warranty / OEM replacement provision (SG10RT std warranty per Sungrow product T&Cs)Annual provisionUSD 40Sungrow warranty document (linked from sungrowpower.com/en)
O2Preventive maintenance (visual, firmware, fan)1–2×/yrUSD 25Local O&M contractor quote
O3Firmware / monitoring subscription (OEM portal)AnnualUSD 0 (default off)OEM cloud terms
O4Spare parts allocation (fans, SPDs, DC breakers)Annual provisionUSD 10OEM BoS list
O5Insurance (asset / business interruption)% of asset valueUSD 5PE insurer
Year-1 OpEx (model input → year-1 cost row)USD 80= Σ O1–O5; +2.0%/yr escalation per assumptions

7. Sensitivity — IRR / NPV driver

ILLUSTRATIVE — NOT A QUOTE. Sensitivity cells below are arithmetic on the bounded inputs in Section 4; they re-derive IRR / NPV / payback under the listed yield and tariff perturbations. Replace with PVGIS site-specific yield and Osinergmin tariff before relying on the result.
ScenarioAnnual yield (kWh/kWp/yr)Self-consumption ratioRetail tariff (USD/kWh)Export tariff (USD/kWh)Modelled NPV (USD)Modelled IRRModelled simple payback (yrs)
Low yield, base tariff1,20070 %0.120.06PENDING — re-runPENDING — re-runPENDING — re-run
Base (matches Sections 2–3)1,50070 %0.120.069,658.870.21204.80
High yield, base tariff1,70070 %0.120.06PENDING — re-runPENDING — re-runPENDING — re-run
Base yield, tariff USD 0.10 / kWh1,50070 %0.100.05PENDING — re-runPENDING — re-runPENDING — re-run
Base yield, tariff USD 0.15 / kWh1,50070 %0.150.075PENDING — re-runPENDING — re-runPENDING — re-run

Only the "Base" row in this table is the verbatim model output above; the other four rows require re-running the scenario model and are listed as pending because the figures above are the only authorised numbers for this page.

8. Compliance & certifications

Standard / schemeScopeStatus (this RFQ)
IEC 62109-1:2010Safety of power converters for PV, Part 1: General requirements — see IEC 62109-1:2010 (IEC Webstore)Confirm certificate number against the OEM CB test report at RFQ
IEC 62109-2:2011Safety of power converters for PV, Part 2: Particular requirements for inverters; used jointly with IEC 62109-1 — see IEC 62109-2:2011 (IEC Webstore)Confirm certificate number against the OEM CB test report at RFQ
IEC 61215-1:2021 ed2Terrestrial PV modules, design qualification and type approval, Part 1: Test requirements (for module pairings) — see IEC 61215-1:2021 ed2 (IEC Webstore)PENDING — confirm against module datasheet at RFQ
UL 1741 (incl. SB / Rule 21 supplement where applicable)Inverter, converter, controller and interconnection system equipment for distributed energy resourcesPENDING — request from OEM
UL 61730-1PV Module Safety Qualification — Part 1: Requirements for construction — see UL 61730-1 (UL shop)PENDING — request from module OEM
CE conformity (EMC + LVD)EU conformity — confirm applicability for PE shipmentPENDING — request from OEM
Peru SEIN / Osinergmin grid-code alignmentLocal utility approval (Enel Distribución, Luz del Sur, etc.)PENDING — coordinate with end-user's utility
ISO 9001 (mfg. QMS)Manufacturer quality system (Sungrow)PENDING — request from OEM

9. Duty / VAT / HS-code block

HS national line Program As-of: 2026-09-22 SoT
HS 8504.40 (static converters; international 6-digit — Peruvian national sub-line PENDING — SUNAT lookup) Import ad-valorem duty PENDING — SUNAT lookup at the time of shipment (Peruvian national sub-line under HS 8504.40, "demás convertidores estáticos" / inverter sub-line) SUNAT Arancel de Aduanas — sunat.gob.pe/operatividad-aduanera
Same HS 8504.40 national sub-line IGV (VAT) — general rate 18% (includes 2% IPM municipal promotion component) per SUNAT IGV PENDING — confirm current rate against SUNAT IGV portal at shipment date SUNAT IGV portal — sunat.gob.pe/operatividad-aduanera
Same HS 8504.40 national sub-line CN–PE FTA preference (if claimed) PENDING — confirm CN–PE FTA coverage and certificate-of-origin rules at the time of shipment via MINCETUR MINCETUR FTA portal (Peruvian trade-agency reference)

Tradvolt does not assign or interpret HS codes. Final classification is the responsibility of the importer or licensed customs broker (despachador) per SUNAT rules at the time of import. For cross-reference against other markets see the EU TARIC consultation, the USITC Harmonized Tariff Schedule search, the UK Global Tariff lookup, and the Japan Customs (English) pages.

10. Request a Quote (RFQ) — replies in 48h

Submit your requirements below; a Tradvolt B2B specialist replies within 48 hours with FOB/CIF/DAP options for the Sungrow SG10RT.

RFQ submissions route to tradvolt.com/rfq/.

11. Sources cited on this page

  1. Sungrow corporate site — OEM portal; product pages JS-rendered (confirm exact datasheet rev at RFQ).
  2. Sungrow about page — corporate identity (founded 1997; PV inverters, ESS, wind converters, EV power, floating PV, charging, hydrogen).
  3. Sungrow string-inverter range — product family reference; SG10RT exact datasheet rev confirmed at RFQ.
  4. IEC 62109-1:2010 (IEC Webstore) — Safety of power converters for use in PV power systems, Part 1: General requirements.
  5. IEC 62109-2:2011 (IEC Webstore) — Safety of power converters for use in PV power systems, Part 2: Particular requirements for inverters (jointly with IEC 62109-1).
  6. IEC 61215-1:2021 ed2 (IEC Webstore) — Terrestrial PV modules, design qualification and type approval, Part 1: Test requirements.
  7. UL 61730-1 (UL shop) — Photovoltaic (PV) Module Safety Qualification, Part 1: Requirements for construction.
  8. SUNAT — operatividad aduanera — Peruvian customs operating rules, IGV and Arancel de Aduanas reference.
  9. ICC Incoterms 2020 — Incoterms 2020 official rules page.
  10. FIATA — international freight forwarding documents (BL, AWB, FBL, etc.).
  11. K2 Systems CrossRail System (US) — pitched/flat-roof rail mounting family; exact rail/kit model and install SOP confirmed at RFQ.
  12. EU TARIC consultation — EU HS/duty lookup tool (cross-reference).
  13. USITC Harmonized Tariff Schedule — US HS/duty lookup (cross-reference).
  14. UK Global Tariff — UK HS/duty lookup (cross-reference).
  15. Japan Customs (English) — JP HS/duty lookup (cross-reference).
  16. Tradvolt RFQ — submission endpoint for the form on this page.