Quick actions (above-fold):
Verdict (illustrative, computed by the computed Tradvolt TCO model): For a 20 kW hybrid inverter + LFP battery system sized for a small off-grid/semi-off-grid resort in Senegal, over a 10-year horizon at an 8.00% discount rate, the model returns NPV = −USD 47,519.05, with simple payback = none and discounted payback = none within the 10-year window, and LCOS = USD 1.82/kWh. All Senegal-specific customs duty, statistical fee (PCF) and VAT rates on this page are PENDING — lookup at douanes.sn and must be re-verified at the Senegal Douanes tariff portal (SRC-5) before any quote is issued. Equipment reference: Sungrow SH20T three-phase hybrid inverter + BYD Battery-Box Premium HVS/HVM (≥10.1 kWh usable). Limitation: the computed NPV/LCOS reflects the bounded model assumptions listed in §11, not a signed offer.
| Item | Value | Source |
|---|---|---|
| Equipment | Sungrow SH20T hybrid inverter + BYD Battery-Box Premium HVS/HVM LFP | OEM datasheets (SRC-3, SRC-4) |
| Location | Senegal (import CN → Dakar → resort site) | — |
| Horizon | 10 years | Model input |
| Discount rate | 8.00 % | Model input |
| NPV | −47,519.05 USD | Computed (scenario model) |
| Simple payback | — (none within horizon) | Computed |
| Discounted payback | — (none within horizon) | Computed |
| LCOS | 1.82 USD/kWh | Computed |
| IRR | −0.3440 | Computed |
| Senegal duty / VAT / PCF | PENDING — lookup at douanes.sn | SRC-5 |
| Evidence date | 2026-09-21 | — |
| Metric | Value |
|---|---|
| Currency | USD |
| Horizon (years) | 10 |
| Discount rate | 8.00 % |
| Total undiscounted cost (USD) | 56,569.83 |
| Total discounted cost / PV of costs (USD) | 54,353.70 |
| Total undiscounted benefit (USD) | 10,057.67 |
| Total discounted benefit (USD) | 6,834.65 |
| NPV (USD) | -47,519.05 |
| IRR | -0.3440 |
| Simple payback (year) | — |
| Discounted payback (year) | — |
| LCOS (USD/kWh) | 1.82 |
| Year | Cost (USD) | Benefit (USD) | Net (USD) | Discount factor | Discounted net (USD) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 50,000.00 | 0.0000 | -50,000.00 | 1.00 | -50,000.00 | 0.0000 |
| 1 | 600.00 | 1,099.64 | 499.64 | 0.9259 | 462.63 | 4,800.00 |
| 2 | 612.00 | 1,077.64 | 465.64 | 0.8573 | 399.21 | 4,704.00 |
| 3 | 624.24 | 1,056.09 | 431.85 | 0.7938 | 342.82 | 4,609.92 |
| 4 | 636.72 | 1,034.97 | 398.24 | 0.7350 | 292.72 | 4,517.72 |
| 5 | 649.46 | 1,014.27 | 364.81 | 0.6806 | 248.28 | 4,427.37 |
| 6 | 662.45 | 993.98 | 331.54 | 0.6302 | 208.92 | 4,338.82 |
| 7 | 675.70 | 974.10 | 298.41 | 0.5835 | 174.12 | 4,252.04 |
| 8 | 689.21 | 954.62 | 265.41 | 0.5403 | 143.39 | 4,167.00 |
| 9 | 703.00 | 935.53 | 232.53 | 0.5002 | 116.33 | 4,083.66 |
| 10 | 717.06 | 916.82 | 199.76 | 0.4632 | 92.53 | 4,001.99 |
| Sub-assembly | OEM legal name | Model / family | Public datasheet / product page | Src |
|---|---|---|---|---|
| 3-phase hybrid inverter, 20 kW class | Sungrow Power Supply Co., Ltd. | Sungrow SH20T (SH4.0–25T series, 3-phase hybrid) | https://en.sungrowpower.com/product-PV-Inverter-Hybrid-Inverter-SH-Series | SRC-3 |
| High-voltage LFP battery bank (≥10.1 kWh usable) | BYD Auto Industry Company Limited (Build Your Dreams), BYD Electronics / Shenzhen BYD Lithium Battery Company Ltd. | BYD Battery-Box Premium HVS / HVM (HVS 10.1 / HVM 11.0 and up) | https://www.bydbatterybox.com/ | SRC-4 |
OEM legal names are taken from the manufacturers' corporate / product pages cited above. Limits (torque, SOC window, max DC voltage, IP rating) must be confirmed against the revision-stamped OEM manuals attached under §8 before any installation.
| ID | Claim | Src: NAME | URL | Accessed |
|---|---|---|---|---|
| SRC-1 | Computed TCO figures (NPV, IRR, LCOS, payback, year-by-year cash flow) for the 10-year, 8% scenario. | Tradvolt scenario TCO model — page output | tradvolt.com/landed-cost/resort-hybrid-20kw-senegal (this page; computed tables §1–§2) | 2026-09-21 |
| SRC-2 | LFP cells shipping classification (Class 9 / UN 3480) requires UN 38.3 test summary and MSDS. | UN Recommendations on the Transport of Dangerous Goods — UN Manual of Tests and Criteria, 7th revised edition, Section 38.3 (Lithium batteries) | https://unece.org/transport/dangerous-goods/un-manual-tests-and-criteria | 2026-09-21 |
| SRC-3 | Sungrow SH-series 3-phase hybrid inverter (SH20T in SH4.0–25T family) — public product page. | Sungrow Power Supply Co., Ltd. — SH-Series product page | https://en.sungrowpower.com/product-PV-Inverter-Hybrid-Inverter-SH-Series | 2026-09-21 |
| SRC-4 | BYD Battery-Box Premium HVS / HVM high-voltage LFP storage — public product page. | BYD Battery-Box — Premium HVS / HVM product page | https://www.bydbatterybox.com/ | 2026-09-21 |
| SRC-5 | Senegal national customs duties & taxes are published by the Direction Générale des Douanes (DGD). The portal hosts the Tarif des Douanes and consultation tools. | Direction Générale des Douanes du Sénégal (DGD) — Section Tarifs | https://www.douanes.sn/?page_id=2526 (Tarif / consult tariff) | 2026-09-21 |
| SRC-6 | Senegal ASYCUDA (Automated System for Customs Data) is the official customs-clearance platform. | UNCTAD ASYCUDA — Senegal country page | https://asycuda.org/en/senegal/ | 2026-09-21 |
| SRC-7 | Pre-shipment conformity under the ECOWAS / national quality programme; reference SON (Nigeria) framework where applicable; confirm Senegal-specific scheme before issue. | Standards Organisation of Nigeria — SONCAP product page (reference for ECOWAS-aligned conformity assessment) | https://son.gov.ng/soncap/ | 2026-09-21 |
| SRC-8 | Senegal licensing structure for electricity generation / B2B uses is overseen by the Commission de Régulation du Secteur de l'Électricité (CRSE). | Commission de Régulation du Secteur de l'Électricité (CRSE) | https://www.crse.sn/loi-cadre-du-secteur-de-lelectricite (legal framework reference) | 2026-09-21 |
| SRC-9 | PV inverter safety standard IEC 62109 (Safety of power converters for use in photovoltaic power systems). | IEC 62109-1 / -2 — IEC Webstore publication page | https://webstore.iec.ch/publication/6326 | 2026-09-21 |
| SRC-10 | Secondary lithium cells for industrial applications fall under IEC 62619. | IEC 62619 — IEC Webstore publication page | https://webstore.iec.ch/publication/31437 | 2026-09-21 |
| SRC-11 | Harmonized System classification reference for static converters (inverter) and lithium-ion accumulators (LFP battery). | World Customs Organization — Harmonized Commodity Description and Coding System, 2022 edition (reference) | https://www.wcoomd.org/en/topics/nomenclature/instrument-and-tools/hs-nomenclature-2022-edition.aspx | 2026-09-21 |
OEM identity — pending datasheet attachment: the Sungrow SH20T datasheet (PDF) and BYD Battery-Box Premium HVS/HVM datasheet (PDF) are the items attached under §8 "Spec / datasheet download" once the OEM supplies revision-stamped copies. The computable TCO in §1–§2 does not depend on which datasheet revision is attached; OEM manual revision is required for site-engineering limits (torque on PV/inverter DC connectors, SOC operating window, max DC input voltage) and is not used to vary the financial figures.
CapEx is split across (a) FOB equipment, (b) ocean freight CN→Dakar (FCL), (c) statutory charges (DD / VAT / PCF / ECOWAS levy), and (d) inland transport to the resort site. The model used a USD 50,000 Year-0 CapEx (equipment + freight + duties + inland + install + commissioning); this is a model input, not a vendor price.
| Line item | Unit | Qty | Unit value (USD) | Sub-total (USD) | Claim / Src |
|---|---|---|---|---|---|
| Sungrow SH20T 3-phase hybrid inverter (OEM datasheet attached §8) | unit | 1 | PENDING — RFQ | PENDING — RFQ | SRC-3 |
| BYD Battery-Box Premium HVS/HVM LFP bank, ≥10.1 kWh usable | pack | 1 | PENDING — RFQ | PENDING — RFQ | SRC-4 |
| BoS: PV string combiner + DC/AC protection + AC distribution | lot | 1 | PENDING — RFQ | PENDING — RFQ | — |
| UN 38.3 test summary + MSDS (Class 9, UN 3480) — supplied with shipment | document set | 1 | included by OEM | included | SRC-2 |
| International freight CN → Dakar (20′ FCL or shared container for ~25–30 m³) | shipment | 1 | PENDING — RFQ | PENDING — RFQ | — |
| Marine insurance (cargo) — 0.3 %–0.5 % of CIF | policy | 1 | 0.5 % × CIF | PENDING — RFQ | — |
| Customs duty (Senegal Douanes national line) | — | — | PENDING — lookup (douanes.sn) | PENDING — lookup | SRC-5 |
| Statistical fee / PCF (Présomption de Contribution Forfaitaire) | — | — | PENDING — lookup (douanes.sn) | PENDING — lookup | SRC-5 |
| VAT (Senegal) | — | — | PENDING — lookup (douanes.sn) | PENDING — lookup | SRC-5 |
| Port handling / ISPS / THC / demurrage risk reserve | — | — | PENDING — RFQ | PENDING — RFQ | SRC-6 |
| Inland transport Dakar → resort site (km + road class) | trip | 1 | PENDING — RFQ | PENDING — RFQ | — |
| Erection, commissioning & SCADA commissioning | lot | 1 | PENDING — RFQ | PENDING — RFQ | — |
ILLUSTRATIVE — NOT A QUOTE. All numerical CapEx lines other than the model input "Year-0 CapEx = USD 50,000" (SRC-1) are PENDING and refresh after (i) RFQ pricing is confirmed, (ii) HS-code lookup at Senegal Douanes (SRC-5) and (iii) freight quotation from the named forwarder.
| HS national line | Program | As-of | SoT |
|---|---|---|---|
| PENDING — lookup at Senegal Douanes (reference classification HS 8504.40 static converters / HS 8507.60 lithium-ion accumulators — SRC-11) | PENDING — lookup | 2026-09-21 | PENDING — lookup |
Do not hardcode rates on this page. After the lookup, the same HS-line column above will be updated and this paragraph will be removed by Tradvolt editorial.
Year-1 OpEx used by the model is USD 600.00, grown at +2.00% per year (a model input, not a vendor figure). Items below show the components the line aggregates; specific component values are PENDING — RFQ.
| Line item | Year-1 (USD) | 10-yr cumulative undiscounted (USD) | Src |
|---|---|---|---|
| Preventive maintenance (1×/yr visit, parts) | PENDING — RFQ (rolled into 600) | PENDING — RFQ | SRC-1 |
| Remote O&M (SCADA / data subscription) | PENDING — RFQ (rolled into 600) | PENDING — RFQ | SRC-1 |
| Battery augmentation allowance (LFP calendar life) | PENDING — RFQ (rolled into 600) | PENDING — RFQ | SRC-4 |
| Spare parts reserve (annuity) | PENDING — RFQ (rolled into 600) | PENDING — RFQ | SRC-1 |
| Insurance (asset all-risk) | PENDING — RFQ (rolled into 600) | PENDING — RFQ | SRC-1 |
| Total OpEx (model aggregate) | 600.00 | 6,569.83 (computed, SRC-1) | SRC-1 |
Cert numbers, certificate holders and logos are not published on this page until the OEM datasheet PDF is attached (§10). No "No.1" / marketing superlatives are asserted.
ILLUSTRATIVE — NOT A QUOTE. Read the answer directly from §1 and §2: simple payback = none within the 10-year horizon and discounted payback = none within the 10-year horizon; cumulative undiscounted net cash flow at Year 10 = (USD 10,057.67 − USD 56,569.83 + USD 50,000.00) = +USD 3,487.84 against an opening outlay of USD 50,000.00, so the project only becomes nominally cash-positive at the very end of the horizon under the bounded assumptions. LCOS = 1.82 USD/kWh on 43,902.52 kWh served undiscounted.
The old draft stated CapEx bands of USD 18,000–32,000 and 9.2–16.3 yr payback against a USD 0.32/kWh displaced tariff. Those figures are superseded by §1 and §2; they are not the scenario model output.
| Driver | −20 % | Base (computed) | +20 % |
|---|---|---|---|
| CapEx (USD 50,000) | NPV improves (less negative); payback still none in 10 yr | NPV = −47,519.05 USD; payback = none | NPV worsens; payback = none |
| Year-1 benefit (USD 1,099.64) | NPV worsens; payback = none | Base case | NPV improves (still negative in this scenario) |
| Discount rate (8.00 %) | NPV improves; payback may appear later in horizon | Base case | NPV worsens; payback = none |
| Senegal customs duty rate (PENDING — lookup) | Lowers CapEx → NPV improves | Base case (rate PENDING) | Raises CapEx → NPV worsens |
For R&D, EPC and procurement review: download the OEM spec & datasheet pack. PDF attachments below are revision-stamped OEM datasheets (or, where marked "pending", an OEM-portal URL that will host the revision once received).
Submit the form below. Tradvolt replies within 48 hours with a final, dated quotation and the customs-duties lookup.
| Input | Default used | Type |
|---|---|---|
| residual_value.amount | 0.00 USD (not modelled) | Model assumption |
| residual_value.year | Not applied (treated as 0 within horizon) | Model assumption |
| replacements[0].amount | DROPPED-ITEM (no scheduled battery replacement cost added to cash flow) | Model assumption |
| asset.ess.round_trip_eff | Implicit in LCOS (1.82 USD/kWh); not exposed as a separate input — confirm against OEM datasheet (SRC-4) before site engineering | Model assumption |
| asset.ess.cycles_per_year | Implicit in the energy-served schedule (4,800 kWh/yr declining 2%/yr) | Model assumption |
| asset.ess.degradation_pct_per_year | 2.00 % per year (encodes both benefit decline and energy decline) | Model assumption |
| asset.ess.charge_cost_per_kwh | 0.00 USD/kWh (no diesel/grid charging cost added to OpEx) | Model assumption |
Each of the above is a model assumption (not a sourced fact). Re-running the model with non-zero residual, an explicit mid-life LFP replacement, or a positive charge cost will change the NPV, IRR, LCOS and payback outputs in §1–§2. Senegal-specific customs duty, PCF and VAT rates are not in this group — they remain PENDING — lookup (SRC-5).
Landed cost = FOB unit price × qty + international freight (CN → Dakar) + insurance + customs duty (rate PENDING — lookup) + statistical fee + VAT (rate PENDING — lookup) + port handling + last-mile to resort site. All rates must be confirmed at the Senegal Douanes tariff portal before any final quote is issued (SRC-5).
Sub-assemblies typically classify under HS 8504.40 (static converters) for the inverter and HS 8507.60 (lithium-ion accumulators) for the LFP bank (SRC-11). Confirm the precise national line at the Senegal Douanes tariff portal (SRC-5) before quoting.
No. All payback, NPV, IRR, LCOS and sensitivity figures on this page are ILLUSTRATIVE — NOT A QUOTE. The figures in §1 and §2 are the scenario model output and may differ from a final Tradvolt offer.
Typical compliance references for export to West Africa include IEC 62109 (PV inverter safety) (SRC-9), IEC 62619 / UN 38.3 (industrial LFP cells) (SRC-2, SRC-10) and CE / Soncap (SRC-7) conformity. Final cert list is project-specific; request the OEM datasheet via the download CTA above.
Allow 30–45 days port-to-port plus Senegal customs clearance and inland transit; final lead time depends on Incoterm, vessel rotation and ASYCUDA processing (SRC-6). Confirm before signing the PO.
Submit the RFQ form at /rfq/ with product, quantity, Incoterm, target certifications, destination country, buyer email and buyer company. Tradvolt replies within 48 hours.