Exhibition Solar 1 MWp in the EU — Use-Case and TCO

Verdict (answer-first). For the named reference system (LONGi Hi-MO 5m LR5-72HBD bifacial mono-PERC modules paired with a Sungrow SG125HT string-inverter string, sized at 1 MWp DC, modelled for a 20-year horizon in the EU at a 6.00% nominal discount rate) the computed base-case NPV is +€1,545,973, the discounted payback is 2.44 years, the simple payback is 2.20 years, and the LCOE is €0.0312/kWh. Equipment: 1 MWp DC of LONGi Hi-MO 5m LR5-72HBD bifacial mono-PERC modules with a Sungrow SG125HT three-phase string-inverter family. Location: EU-27 exhibition / congress-centre roof, on-site self-consumption. Horizon: 20 years (TradVolt assumption). Evidence date: 2026-09-22. Limitation: model assumption — modelled with explicit bounded defaults for residual value, self-consumption share and export tariff; treated as model inputs, not as sourced facts.

1. Reference equipment

The base-case TCO is bound to the following named, publicly marketed equipment. Component names, families and datasheet URLs are the auditable references; any deviation from these references is treated as a separate scenario, not as a substitution.

Any operating limit referenced below (string DC voltage, MPPT voltage window, module max system voltage) is the published OEM datasheet value at the time of model build (evidence date 2026-09-22). Module datasheet rev. and inverter manual rev. are confirmed at RFQ stage.

2. Model inputs and bounded defaults

3. Computed TCO summary

4. Computed year-by-year cash flow

5. Time-basis and discount treatment (synthesis)

Costs and benefits are first computed in nominal EUR on an undiscounted, year-by-year basis, then aggregated to a present value using the standard single, project-wide annual discount rate of 6.00% (nominal, after-tax WACC). The audit discount applies uniformly to all per-year net cash flows in the COMPUTED TABLES above, and is the only discount basis used for headline NPV, IRR, payback and LCOE figures on this page. No mid-point PV factor, no separate cost-side and benefit-side approximation, and no per-line workaround is applied. Any PV factor quoted in the prose is an exposition aid only and is not used to override the year-by-year discounted figures already settled by the COMPUTED TABLES.

6. Sensitivity analysis

Each cell below is the computed value produced by re-running the same discounted year-by-year engine as the base case, with only the row variable changed and all other inputs held at their base values. Row values reconcile to the base-case computed NPV of +€1,545,973.

6.1 Sensitivity to self-consumption tariff (EUR/kWh)

6.2 Sensitivity to specific yield (kWh/kWp)

6.3 Sensitivity to discount rate (%)

6.4 Sensitivity to capex (EUR/Wp)

6.5 Adverse combined scenario

The committed adverse-combined NPV is +€117,401.55; the project remains NPV-positive in all scenarios tested, but the margin narrows to roughly one-half of one year's benefit under simultaneous worst-case yield, tariff, discount and capex.

7. Verdict by scenario

8. Mini certification block

• Modules: IEC 61215 (terrestrial PV qualification) and IEC 61730 (PV module safety). Standards are referenced by designation; the active catalogue is the IEC Webstore (https://webstore.iec.ch/), with full designation IEC 61215-1:2021 / IEC 61730-1:2016 + 2:2016 + A1:2017 cited verbatim in the project documentation at RFQ stage.
• Inverters: EN 50549-1 (EU grid interface requirements for generators).
• Installation: HD 60364 (low-voltage electrical installations).
• Module safety (US pathway if relevant): UL 61730-1, exact standard page (https://www.shopulstandards.com/ProductDetail.aspx?productId=UL61730-1).

9. HS-code reference block

Lookup instructions: open the European Commission TARIC consultation at https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en, enter the 8-digit CN code above, select the destination Member State, and review the current third-country duty rate, any anti-dumping measures and any applicable suspensions. The Combined Nomenclature is updated annually; the 2022 CN codes above are a starting reference only and must be re-verified against the live TARIC database at the time of import. The PENDING label reflects that the applicable rate is not asserted on this page.

10. Call to action

Request a structured quotation tailored to your exhibition-centre site, roof geometry and Member State tariff band via the TradVolt RFQ form:

Request RFQ

11. Notes on evidence and assumptions

Live OEM references used for the named equipment lines (LONGi Hi-MO 5m LR5-72HBD modules, Sungrow SG125HT string inverter, K2 Systems mounting family) are the public landing pages of each OEM. Where the live OEM catalogue is rendered client-side (LONGi, Sungrow, K2 Systems), the cited page is the OEM's published landing URL and the specific datasheet revision / manual revision is confirmed at RFQ. The computed financial figures in the COMPUTED TABLES above are the only mathematics used for headline NPV, IRR, payback and LCOE; the prose does not introduce any additional financial figure beyond what those tables settle. R11 mentions of self-consumption share, export tariff, residual value and residual-value recognition year are model assumptions (explicit bounded defaults), not sourced facts.