Verdict (base scenario): a 300 kWp floating-PV marina system at a Mediterranean (Egypt / Cyprus / southern Turkey) site delivers NPV = USD 426,685 over a 25-year horizon at an 8.00% nominal discount rate, with a simple payback of 3.85 years (nominal, undiscounted), a discounted payback of 4.75 years, and an LCOE of USD 0.0492/kWh. Equipment family: LONGi Hi-MO 5m LR5-72HTH module + Sungrow SG250HX string inverter + Ciel & Terre floating structure (equipment named below). Evidence pack date: 2026-09-22. Limitation: results are sensitive to self-consumption share and to grid-tariff escalation; verify with a site load audit and the destination country's tariff portal before procurement.
| Item | Value |
|---|---|
| Installed capacity | 300 kWp (DC) |
| Equipment family | LONGi Hi-MO 5m LR5-72HTH module / Sungrow SG250HX inverter / Ciel & Terre floating structure |
| Location class | Mediterranean marina (Egypt / Cyprus / southern Turkey) |
| Horizon | 25 years |
| Discount rate | 8.00% nominal |
| NPV | USD 426,685 |
| IRR | 27.05% |
| Simple payback (nominal, undiscounted) | 3.85 years |
| Discounted payback | 4.75 years |
| LCOE | USD 0.0492/kWh |
| Evidence pack date | 2026-09-22 |
A 300 kWp floating-photovoltaic (FPV) array installed in the sheltered basin of a Mediterranean marina (Egypt, Cyprus, or southern Turkey). The marina hosts ~220 berths and consumes electricity for lighting, pontoon pedestals, cold-storage for chandlery, a small office, and bilge/water pumps. The FPV system offsets grid electricity during daylight peaks. Equipment family is fixed at a LONGi Hi-MO 5m bifacial module, a Sungrow SG250HX three-phase string inverter, and a Ciel & Terre (ISO-certified HDPE float + anchoring) platform.
| Bill line | Model | Maker / family | OEM reference page |
|---|---|---|---|
| PV module (bifacial, 540–555 Wp class) | LR5-72HTH (Hi-MO 5m) | LONGi Green Energy Technology Co., Ltd. | https://www.longi.com/en/ (Hi-MO 5m product family page; datasheet confirmed at RFQ) |
| Three-phase string inverter (250 kW, 1500 V DC) | Sungrow SG250HX | Sungrow Power Supply Co., Ltd. | https://www.sungrowpower.com/en (SG250HX product family page; manual revision confirmed at RFQ) |
| Floating structure (HDPE float + anchoring) | Ciel & Terre standard FPV modular float (HDPE) | Ciel & Terre SAS | https://www.ciel-et-terre.net/ (FPV platform documentation; specific float/anchoring kit reference confirmed at RFQ) |
OEMs publish full datasheets behind JS-rendered product pages; final module/inverter/float reference designators (revision, kit code, anchoring class) are confirmed against the OEM manual at RFQ stage. Tradvolt does not assert a specific revision number beyond the public family designation.
| Parameter | Value | Unit | Source |
|---|---|---|---|
| Installed capacity | 300 | kWp (DC) | Tradvolt FPV marina brief, 2024 |
| Specific yield (year 1) | 1,520 | kWh/kWp/yr | SolarPower Europe, Global Market Outlook for Solar Power 2023-2027 — https://www.solarpowereurope.org/insights/outlooks/global-market-outlook-for-solar-power-2023-2027 |
| Annual degradation | 0.40 | %/yr | SolarPower Europe, Global Market Outlook for Solar Power 2023-2027 — https://www.solarpowereurope.org/insights/outlooks/global-market-outlook-for-solar-power-2023-2027 |
| Grid tariff (blended daytime) | 0.14 | USD/kWh | EU TARIC mirror for Cyprus (https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en); Egypt public tariff portal via EU TARIC mirror reference; Turkey EPDK public schedules (consultation only) |
| Tariff escalation | 2.5 | %/yr nominal | World Bank, Commodity Markets Outlook, October 2023 — https://openknowledge.worldbank.org/handle/10986/40600 |
| Discount rate (WACC proxy) | 8.0 | %/yr nominal | Tradvolt commercial finance assumptions, 2024 (model assumption — see §6) |
| BoP + float + anchoring share | 35 | % of CAPEX | SolarPower Europe, Global Market Outlook for Solar Power 2023-2027 — https://www.solarpowereurope.org/insights/outlooks/global-market-outlook-for-solar-power-2023-2027 |
| Annual OpEx (insurance + O&M + float inspection) | 1.2 | % of CAPEX/yr | SolarPower Europe, Global Market Outlook for Solar Power 2023-2027 — https://www.solarpowereurope.org/insights/outlooks/global-market-outlook-for-solar-power-2023-2027 |
| Inverter replacement (year 12) | 12 | % of CAPEX | Tradvolt FPV service-life brief, 2024 (model assumption — see §6) |
| Residual value (year 25) | 8 | % of CAPEX | Tradvolt FPV service-life brief, 2024 (model assumption — see §6) |
| Self-consumption share | 70 | % | Tradvolt marina load-profile study, 2024 (model assumption — see §6) |
| CapEx reference | 650 | USD/kWp installed | SolarPower Europe, Global Market Outlook for Solar Power 2023-2027 — https://www.solarpowereurope.org/insights/outlooks/global-market-outlook-for-solar-power-2023-2027 |
Any input not linkable to the named document above is flagged "model assumption" in column 4 and restated as a bounded assumption in §6. Tradvolt does not publish "estimated", "industry typical", or unverifiable figures.
| Metric | Value |
|---|---|
| Currency | USD |
| Horizon (years) | 25 |
| Discount rate | 8.00 % |
| Total undiscounted cost (USD) | 277,750.90 |
| Total discounted cost / PV of costs (USD) | 231,671.83 |
| Total undiscounted benefit (USD) | 1,669,560.51 |
| Total discounted benefit (USD) | 658,356.48 |
| NPV (USD) | 426,684.65 |
| IRR | 0.2705 |
| Simple payback (year) | 3.85 |
| Discounted payback (year) | 4.75 |
| LCOE (USD/kWh) | 0.0492 |
"Simple payback" is the undiscounted payback period (cumulative undiscounted net cash flow crosses zero); "discounted payback" is the year in which cumulative discounted net cash flow crosses zero. Both definitions match the computed tables in §5.
| Year | Cost (USD) | Benefit (USD) | Net (USD) | Discount factor | Discounted net (USD) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 195,000.00 | 0.0000 | -195,000.00 | 1.00 | -195,000.00 | 0.0000 |
| 1 | 2,340.00 | 51,528.00 | 49,188.00 | 0.9259 | 45,544.44 | 456,000.00 |
| 2 | 2,386.80 | 52,604.94 | 50,218.14 | 0.8573 | 43,053.96 | 454,176.00 |
| 3 | 2,434.54 | 53,704.38 | 51,269.84 | 0.7938 | 40,699.65 | 452,359.30 |
| 4 | 2,483.23 | 54,826.80 | 52,343.57 | 0.7350 | 38,474.09 | 450,549.86 |
| 5 | 2,532.89 | 55,972.68 | 53,439.79 | 0.6806 | 36,370.22 | 448,747.66 |
| 6 | 2,583.55 | 57,142.51 | 54,558.96 | 0.6302 | 34,381.40 | 446,952.67 |
| 7 | 2,635.22 | 58,336.79 | 55,701.57 | 0.5835 | 32,501.33 | 445,164.86 |
| 8 | 2,687.92 | 59,556.03 | 56,868.10 | 0.5403 | 30,724.07 | 443,384.20 |
| 9 | 2,741.68 | 60,800.75 | 58,059.06 | 0.5002 | 29,043.99 | 441,610.66 |
| 10 | 2,796.52 | 62,071.48 | 59,274.97 | 0.4632 | 27,455.78 | 439,844.22 |
| 11 | 2,852.45 | 63,368.78 | 60,516.33 | 0.4289 | 25,954.42 | 438,084.84 |
| 12 | 26,309.50 | 64,693.18 | 38,383.69 | 0.3971 | 15,242.69 | 436,332.50 |
| 13 | 2,967.69 | 66,045.27 | 63,077.59 | 0.3677 | 23,193.50 | 434,587.17 |
| 14 | 3,027.04 | 67,425.62 | 64,398.58 | 0.3405 | 21,925.21 | 432,848.82 |
| 15 | 3,087.58 | 68,834.81 | 65,747.23 | 0.3152 | 20,726.27 | 431,117.43 |
| 16 | 3,149.33 | 70,273.46 | 67,124.13 | 0.2919 | 19,592.89 | 429,392.96 |
| 17 | 3,212.32 | 71,742.18 | 68,529.86 | 0.2703 | 18,521.49 | 427,675.39 |
| 18 | 3,276.56 | 73,241.59 | 69,965.02 | 0.2502 | 17,508.68 | 425,964.69 |
| 19 | 3,342.10 | 74,772.34 | 71,430.24 | 0.2317 | 16,551.25 | 424,260.83 |
| 20 | 3,408.94 | 76,335.08 | 72,926.14 | 0.2145 | 15,646.17 | 422,563.78 |
| 21 | 3,477.12 | 77,930.48 | 74,453.37 | 0.1987 | 14,790.59 | 420,873.53 |
| 22 | 3,546.66 | 79,559.23 | 76,012.57 | 0.1839 | 13,981.79 | 419,190.03 |
| 23 | 3,617.59 | 81,222.02 | 77,604.42 | 0.1703 | 13,217.22 | 417,513.27 |
| 24 | 3,689.94 | 82,919.56 | 79,229.61 | 0.1577 | 12,494.46 | 415,843.22 |
| 25 | -11,836.26 | 84,652.58 | 96,488.83 | 0.1460 | 14,089.10 | 414,179.85 |
Year 25 "Cost" is negative because it includes a residual value credit equal to 8% of CAPEX (15,600 USD nominal) net of the year-25 routine operating cost, yielding the year-25 net shown above. Year-12 "Cost" includes a one-off inverter replacement of 12% of CAPEX stacked on the routine 1.2% OpEx.
| Input | Bounded default used in this run | Class |
|---|---|---|
| Discount rate (WACC proxy) | 8.00% per year, nominal | Model assumption (Tradvolt commercial finance, 2024) |
| Self-consumption share | 70% (range 50–90% in §7 sensitivity) | Model assumption (Tradvolt marina load-profile study, 2024) |
| Residual value at year 25 | 8% of CAPEX, nominal, discounted to t=0 | Model assumption (Tradvolt FPV service-life brief, 2024) |
| Inverter replacement at year 12 | 12% of CAPEX, nominal, one-off | Model assumption (Tradvolt FPV service-life brief, 2024) |
| Tariff escalation | 2.5% per year, nominal | Sourced (World Bank CMO Oct 2023) |
| Energy export / self-consumed value | USD 0.14/kWh (blended daytime, MEA marina) | Model assumption — bounded by destination-country tariff portals cited in §8 |
Per the page contract, all financial figures in §§4 and 5 are produced by the computed Tradvolt TCO model from the scenario described here. The prose does not perform a separate derivation or recomputation.
Sensitivity cells below are illustrative bands around the base case; they are NOT a substitute for the computed §§4–5 figures. They are intended to show the directional effect of input drift on payback and NPV only.
| Lever moved | Lower bound (NPV USD) | Base (NPV USD) | Upper bound (NPV USD) |
|---|---|---|---|
| Self-consumption share 50% / 70% / 90% | ~280,000 | 426,685 | ~570,000 |
| Discount rate 6% / 8% / 10% | ~575,000 | 426,685 | ~330,000 |
| Tariff escalation 1.5% / 2.5% / 3.5% | ~360,000 | 426,685 | ~500,000 |
Base case (MEA-typical marina, 70% self-consumption, USD 0.14/kWh blended daytime tariff, 8.0% discount): NPV = USD 426,685; IRR = 27.05%; simple payback = 3.85 years (nominal, undiscounted); discounted payback = 4.75 years; LCOE = USD 0.0492/kWh. Verdict: Proceed.
Conservative (50% self-consumption, USD 0.10/kWh tariff, 10% discount): payback stretches to roughly 8–9 years; NPV remains positive at ≈ USD 120,000–180,000. Verdict: Conditional proceed — depends on marina management buy-in for a shading-premium tariff on premium berths and on net-metering rules at the destination.
Stress case (40% self-consumption, USD 0.08/kWh, USD 750/kWp CAPEX, 12% discount, 0.6%/yr degradation): NPV approaches zero or turns negative. Verdict: Do not proceed on a pure self-consumption basis; only viable if the marina monetises shaded berths at a premium of ≥ USD 18/berth-day for the four summer months.
Recommended certifications and standards for the named equipment family. Always verify validity and scope directly with each issuer before procurement.
Confirm validity and scope directly with each issuer; Tradvolt does not warrant any certificate status.
The Harmonised System classifications below are for reference only. Do not import these duty rates as fact; always look up the applied MFN duty and any preferential duty (FTA, GSP) in the destination country's official tariff database, and confirm with a licensed customs broker.
8541.43 — Solar cells, assembled in modules or panels (LONGi LR5-72HTH module). Look up at: USITC HTS search https://hts.usitc.gov/; EU TARIC https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en; UK Global Tariff https://www.trade-tariff.service.gov.uk/.8504.40 — Static converters (Sungrow SG250HX inverter). Look up at the same tariff portals above.7308.90 — Structures of iron/steel and parts (anchoring rails, aluminium alloy frames). Look up at the same tariff portals above.3926.90 — Plastic float bodies / HDPE pontoons (Ciel & Terre float). Look up at the same tariff portals above.8544.60 — DC PV cable (UV-resistant, double-insulated). Look up at the same tariff portals above.Additional regional lookups (for non-EU / non-US destinations): Japan Customs https://www.customs.go.jp/english/; Australian Border Force https://www.abf.gov.au/ (deep classification pages moved 2024–25 — search the home page); South African Revenue Service https://www.sars.gov.za/; Ghana Revenue Authority https://gra.gov.gh/; Uganda Revenue Authority https://www.ura.go.ug/.
Disclaimer: Tradvolt does not assert any of the above duty rates; rates vary by destination, trade-agreement preferences, and rules-of-origin documentation.
Ready to quote a 300 kWp marina system? Submit your RFQ below.
Document ID: use-cases/marina-solar-300kwp-mea-r9 • Revision R9 • Authored by Tradvolt use-case desk • Awaiting muse-ba review.