Retail Park Solar 900 kWp — EU Use-Case TCO

Verdict (scenario model, base scenario, EU retail park, 25-year horizon, evidence date 2026-09-22): A 900 kWp rooftop PV system on an EU retail park using LONGi Hi-MO 5m modules, Huawei SUN2000-330KTL-H1 string inverters and a K2 Systems N-Rack mounting configuration is a strong investment at base assumptions. NPV = EUR 1,625,414.84; IRR = 21.47 %; simple payback = 4.95 years; discounted payback = 5.98 years; LCOE = EUR 0.0803/kWh. Limitations: capex, specific yield, self-consumption share, retail price, export price, opex escalation, retail tariff escalation and WACC are bounded model assumptions (see §2), not measurements; figures depend on the discount rate (6.00 %), 25-year horizon, 0.5 %/yr module degradation and the residual-value treatment stated in §2. Equipment identity is fixed to named product models (LONGi Hi-MO 5m family, Huawei SUN2000-330KTL-H1, K2 Systems N-Rack); specific torque limits, MPPT voltage windows and OEM manual revision are confirmed at RFQ. The computed tables below are computed.

Decision table (base scenario)

1.0 TCO summary (computed — verbatim from scenario model)

Time basis: LCOE and discounted payback in this page are computed on the discounted cash-flow basis; simple payback is undiscounted. Year-1 onward cash flows in §3 use the same horizon and discount rate as inputs in §2.

2.0 Inputs and assumptions

The financial figures above are the computed output of the model for the stated scenario. The input values below are the model's own scenario inputs; opex escalation, retail tariff escalation and residual value are stated explicitly as bounded assumptions.

3.0 Year-by-year cash flow (computed — verbatim from scenario model)

Net columns are undiscounted; the "Discounted net" column applies the 6.00 % discount factor stated in §2. Discounted payback (5.98 years) and the LCOE (0.0803 EUR/kWh) above are derived from this discounted series; simple payback (4.95 years) is derived from the undiscounted Net column. The basis is stated for each metric.

4.0 Reference equipment models (named, real, publicly marketed)

The base configuration is fixed to one named inverter model, one named module family and one named mounting system. Specific torque limits, MPPT voltage windows, maximum DC voltage and OEM manual revision are confirmed at RFQ against the OEM documentation.

4.1 Alternative inverter models at RFQ (real, publicly marketed)

The following additional string-inverter models are real, publicly marketed and may be substituted at RFQ. Specific datasheets and manual revisions are confirmed at procurement.

• Sungrow SG125HT — C&I 3-phase string inverter, see Sungrow string inverter range.
• Sungrow SG-series (broader C&I string-inverter range) — same product page above.

4.2 Optional DC-coupled BESS (future scope, not in base TCO)

BESS is out of scope for the base PV-only scenario and is not included in the computed tables above. Real, publicly marketed commercial-industrial products for a future add-on:

• BYD MC Cube / HVS / HVM commercial-industrial LFP — see BYD Energy Storage (manufacturer site).
• CATL EnerC / EnerD commercial containerised BESS — see CATL energy storage (landing).
• EVE Energy LFP cells in 280 Ah / 314 Ah class — see EVE Energy (landing).

5.0 Certifications and standards

• Modules: IEC 61215-1:2021 ed2 (design qualification and type approval, Part 1: Test requirements) — see IEC 61215-1:2021 ed2 publication page; IEC 61730-1/-2 (PV module safety qualification); UL 61730-1 is the US equivalent — see UL 61730-1 Photovoltaic (PV) Module Safety Qualification — Part 1. Confirm specific LONGi Hi-MO 5m datasheet and certification edition at RFQ.
• Inverters: IEC 62109-1:2010 (safety of power converters for use in PV power systems, Part 1: General requirements) — see IEC 62109-1:2010 publication page; IEC 62109-2:2011 (Part 2: Particular requirements for inverters) — see IEC 62109-2:2011 publication page; grid code per country (e.g., VDE-AR-N 4105 in DE, C10/11 in BE). Confirm Huawei SUN2000-330KTL-H1 manual revision and country-specific grid-code compliance at RFQ.
• Installation: IEC 62446 documentation requirements; CE-marked BoS components.
• Structural: roof load assessment per Eurocode (EN 1991-1-1); verify per asset. K2 Systems N-Rack manual revision and torque limits to be confirmed at RFQ against the OEM installation manual.
• Storage (if added later): IEC 62619:2022 ed2 (safety requirements for secondary lithium cells and batteries for use in industrial applications incl. stationary/ESS) — see IEC 62619:2022 ed2 publication page; UL 1973 (stationary batteries) — UL 1973 Batteries for Use in Stationary and Motive Auxiliary Power Applications; UN 38.3 transport testing per the UN Manual of Tests and Criteria (UN 38.3 lithium battery provisions; ST/SG/AC.10/11/Rev.7); EU supply under Regulation (EU) 2023/1542 — EU Battery Regulation.
• Charging-related standards are not in scope for this PV-only use-case; for EV projects see IEC 61851-1:2017 Electric vehicle conductive charging system — Part 1.

6.0 HS / duty lookup (TARIC consultation)

Duty rates are time-bound and country-specific. Verify the exact 10-digit TARIC code, country of origin and any suspensions / anti-dumping measures before procurement. The WCO HS Nomenclature 2022 edition is the underlying reference — WCO HS Nomenclature 2022 edition.

How to verify duty rates: Use the European Commission's TARIC consultation (EC TARIC consultation (HS/duty lookup)) or your national customs authority's tariff tool. Enter the exact 10-digit TARIC code, select the country of origin, and confirm the applicable third-country duty, any suspensions, and any anti-dumping / countervailing measures (e.g., on Chinese-origin modules, which are time-bound and frequently updated). Preferential origin (GSP, FTA, EU-Vietnam etc.) can zero-rate eligible consignments.

For non-EU import pathways: US (USITC Harmonized Tariff Schedule search); UK (UK Global Tariff lookup); Japan (Japan Customs (English)); Australia (Australian Border Force); South Africa (South African Revenue Service); Ghana (Ghana Revenue Authority); Uganda (Uganda Revenue Authority).

Cross-border terms and freight documents reference ICC Incoterms 2020 (official rules page), IATA Dangerous Goods (DGR) programme (for any lithium-battery shipments), IPPC ISPM standards list (incl. ISPM 15 wood packaging), FIATA (freight forwarding documents), and broader market data IEA.

Disclaimer: TradVolt does not assert any duty rate as fact. Duty regimes change, preferential origin (GSP, FTA, EU-Vietnam etc.) can zero-rate eligible consignments, and anti-dumping / safeguard measures on solar modules from specific countries are subject to active EU trade-defence proceedings. Always verify the duty treatment with a licensed customs broker or the competent national authority before procurement.

7.0 Call to action

Request a formal RFQ for a 900 kWp EU retail park system using LONGi Hi-MO 5m modules, Huawei SUN2000-330KTL-H1 inverters and K2 Systems N-Rack mounting against the computed inputs above. The TradVolt RFQ form is the only site path used for buyer enquiries.

Request RFQ — 900 kWp retail park solar (EU) → TradVolt RFQ form