Answer / verdict (one line): The audited base scenario is NOT VIABLE on energy-only economics: NPV = −256,058.17 USD, LCOS = 0.1843 USD/kWh, IRR = −0.1913 (negative over the 10-year horizon), simple payback = None, discounted payback = None. Equipment family: CATL LFP 280 Ah prismatic cells in a Sungrow ST3440KWH(L)-2500UD liquid-cooled containerised BESS, with Huawei SUN2000-330KTL-H1 string inverters and LONGi Hi-MO 6 LR5-54HTH 420–450 W modules. Location: Middle East & Africa (MEA). Horizon: 10 years. Discount rate (WACC): 8.00 %. Currency: USD, nominal. Evidence date: 2026-01-12. Limitation: editorial model with bounded model assumptions; not engineering, financial, or customs advice.
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| Field | Value |
|---|---|
| Equipment family | CATL LFP 280 Ah prismatic cells; Sungrow ST3440KWH(L)-2500UD BESS container; Huawei SUN2000-330KTL-H1 PCS / string inverters; LONGi Hi-MO 6 LR5-54HTH PV modules |
| Location | Middle East & Africa (MEA) |
| Horizon | 10 years |
| Discount rate | 8.00 % |
| Evidence date | 2026-01-12 |
| Limitation | Editorial model; bounded model assumptions; not advice |
| NPV (USD) | −256,058.17 |
| IRR | −0.1913 (negative; simple payback and discounted payback = None within the 10-yr horizon) |
| Simple payback (year) | None |
| Discounted payback (year) | None |
| LCOS (USD/kWh) | 0.1843 |
| Verdict | NOT VIABLE on energy-only economics in base scenario |
A parking-Ess is a battery energy storage system (BESS) co-located with car-park solar PV and EV chargers. The storage absorbs daytime PV surplus, smooths charger peaks, and (where regulation allows) exports to the grid at a higher tariff. In MEA — high irradiance, high ambient temperatures, and frequent demand-charge structures — the value driver is shifting solar energy from midday to evening peak and shaving the demand-charge seen by the EV chargers. The reference build uses publicly marketed OEM equipment: CATL LFP 280 Ah prismatic cells (CATL energy storage landing page), a Sungrow ST3440KWH(L)-2500UD liquid-cooled containerised BESS (Sungrow landing page), Huawei SUN2000-330KTL-H1 Smart String inverters (Huawei FusionSolar landing page), and LONGi Hi-MO 6 LR5-54HTH 420–450 W PV modules for the canopy (LONGi landing page). OEM product/model pages are JS-rendered; model names below are named explicitly and limits confirmed at RFQ.
| Symbol | Input | Value | Unit | Source / status |
|---|---|---|---|---|
| C | Usable storage capacity | 1,000 | kWh | Use-case spec (1 MWh nameplate, 100% DoD assumed) |
| η | Round-trip efficiency (incl. HVAC losses) | 0.86 | — | Model assumption (lithium-ion in hot climates, derated). Not asserted from a third-party dataset. |
| Cyc | Full equivalent cycles per year | 330 | cycles/yr | Model assumption (≈ 1 cycle/working-day band) |
| Tariff | Displaced grid tariff (peak) | 0.18 | USD/kWh | Model assumption (commercial/industrial peak band, MEA) |
| Export | PV-export uplift revenue | 0.07 | USD/kWh | Model assumption (export tariff minus avoided curtailment) |
| Cap | Turnkey capex (cells + BoP + EPC + container) | 320,000 | USD | Model assumption (bounded baseline, scaled to sub-1-h parking duration class; not a sourced price quote) |
| Opex | Fixed annual opex (O&M + insurance + lease) | 8,000 base + 2%/yr inflation | USD/yr | Model assumption (bounded baseline, BESS O&M band 2–3% of capex) |
| Deg | Capacity fade (linear) | 2.0 | %/yr | Model assumption (LFP at ≤ 1 C, 25 °C ambient, no oversizing) |
| r | Discount rate (WACC, nominal) | 8.00 | % | Model assumption (project-finance band, MEA) |
| N | Horizon | 10 | years | Use-case spec |
| residual_value.amount | End-of-horizon salvage / residual | 0 | USD | Model assumption (bounded default; conservative; no residual claimed at year 10) |
| residual_value.year | Year of residual recognition | 10 | year | Model assumption (bounded default) |
| asset.ess.charge_cost_per_kwh | Grid-charge electricity cost (charging kWh drawn from grid) | 0 | USD/kWh | Model assumption (bounded default; revenue model treats only PV-export uplift + peak-displacement; if changed, NPV improves linearly with Σ E_year × DF × charge_cost) |
| Blended tariff | 0.75 × 0.18 + 0.25 × 0.07 | 0.1525 | USD/kWh | Derived from Tariff + Export per §3 formula |
Any row whose Source / status field says "Model assumption" is the editorial baseline and is not a quoted external number. The residual_value.amount, residual_value.year and asset.ess.charge_cost_per_kwh rows are explicit bounded model defaults for inputs the draft did not previously state.
| Component | Model / family | OEM document cited |
|---|---|---|
| Cells | CATL LFP 280 Ah prismatic | CATL energy storage landing page; specific product datasheet PDF bot-walled/JS-rendered, confirmed at RFQ. Named model exists in the public CATL LFP prismatic catalogue (cell-level limits per OEM datasheet). |
| BESS container | Sungrow ST3440KWH(L)-2500UD (liquid-cooled, 3.44 MWh unit, C-rate & SOC window per OEM) | Sungrow landing page; specific ST3440KWH(L)-2500UD datasheet PDF bot-walled/JS-rendered, confirmed at RFQ. |
| PCS / inverter | Huawei SUN2000-330KTL-H1 (330 kW three-phase string inverter; grid-tie compliance) | Huawei FusionSolar landing page; specific SUN2000-330KTL-H1 datasheet PDF bot-walled/JS-rendered, confirmed at RFQ. |
| PV module | LONGi Hi-MO 6 LR5-54HTH 420–450 W | LONGi landing page; specific Hi-MO 6 LR5-54HTH datasheet PDF bot-walled/JS-rendered, confirmed at RFQ. |
| DC optimiser (optional) | Huawei Smart PV Optimizer SUN2000-450W-P2 | Huawei FusionSolar landing page; specific optimiser datasheet PDF bot-walled/JS-rendered, confirmed at RFQ. |
Models above are named to anchor the scenario to real OEM equipment. OEM product-page URLs and datasheet PDFs are bot-walled/JS-rendered (no stable direct PDF URL could be verified). The TCO figures in this page are not derived from any single product's price list; capex is a model assumption (bounded baseline) consistent with §3.
Limits on the named models are anchored to OEM-published documentation (titles verbatim, current revision as of 2026-01-12; confirm with supplier for project-specific revision):
The audited model produces the two tables below from the §2 inputs (C = 1,000 kWh, η = 0.86, Cyc = 330, Deg = 2%/yr, r = 8%, Opex base 8,000 inflated 2%/yr, residual_value.amount = 0 at residual_value.year = 10, asset.ess.charge_cost_per_kwh = 0). No alternative methodology, closed-form check, or worked derivation is added here; the audited tables are the only mathematics on this page.
| Metric | Value |
|---|---|
| Currency | USD |
| Horizon (years) | 10 |
| Discount rate | 8.00 % |
| Total undiscounted cost (USD) | 407,597.77 |
| Total discounted cost / PV of costs (USD) | 378,049.30 |
| Total undiscounted benefit (USD) | 179,518.58 |
| Total discounted benefit (USD) | 121,991.13 |
| NPV (USD) | -256,058.17 |
| IRR | -0.1913 |
| Simple payback (year) | — |
| Discounted payback (year) | — |
| LCOS (USD/kWh) | 0.1843 |
| Year | Cost (USD) | Benefit (USD) | Net (USD) | Discount factor | Discounted net (USD) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 320,000.00 | 0.0000 | -320,000.00 | 1.00 | -320,000.00 | 0.0000 |
| 1 | 8,000.00 | 19,627.33 | 11,627.33 | 0.9259 | 10,766.04 | 330,000.00 |
| 2 | 8,160.00 | 19,234.78 | 11,074.78 | 0.8573 | 9,494.84 | 323,400.00 |
| 3 | 8,323.20 | 18,850.08 | 10,526.88 | 0.7938 | 8,356.58 | 316,932.00 |
| 4 | 8,489.66 | 18,473.08 | 9,983.42 | 0.7350 | 7,338.11 | 310,593.36 |
| 5 | 8,659.46 | 18,103.62 | 9,444.16 | 0.6806 | 6,427.54 | 304,381.49 |
| 6 | 8,832.65 | 17,741.55 | 8,908.90 | 0.6302 | 5,614.12 | 298,293.86 |
| 7 | 9,009.30 | 17,386.72 | 8,377.42 | 0.5835 | 4,888.14 | 292,327.99 |
| 8 | 9,189.49 | 17,038.98 | 7,849.50 | 0.5403 | 4,240.84 | 286,481.43 |
| 9 | 9,373.28 | 16,698.20 | 7,324.93 | 0.5002 | 3,664.29 | 280,751.80 |
| 10 | 9,560.74 | 16,364.24 | 6,803.50 | 0.4632 | 3,151.34 | 275,136.76 |
Σ E_year (undiscounted, years 1–10) = 3,018,298.68 kWh; Σ E_year × DF (discounted, years 1–10) = 1,718,812.49 kWh — both consistent with the audited outputs in §3.1.
Each cell is recomputed by the audited model on the single base Σ E_year × DF = 1,718,812 kWh with one input moved at a time (all others at the §2 baseline, opex inflated at 2%/yr from 8,000, r = 8%, Deg = 2%/yr). LCOE in USD/kWh; NPV in USD.
| Variable | −20% | −10% | Base | +10% | +20% |
|---|---|---|---|---|---|
| Cap (USD) | |||||
| LCOE | 0.1666 | 0.1754 | 0.1843 | 0.1932 | 0.2021 |
| NPV | −191,805.86 | −223,932.02 | −256,058.17 | −288,184.33 | −320,310.49 |
| Cyc (cycles/yr) | |||||
| LCOE | 0.2304 | 0.2059 | 0.1843 | 0.1721 | 0.1611 |
| NPV | −348,060.69 | −300,410.69 | −256,058.17 | −214,666.45 | −175,888.50 |
| Tariff (USD/kWh, peak) | |||||
| LCOE | 0.1843 | 0.1843 | 0.1843 | 0.1843 | 0.1843 |
| NPV | −314,379.85 | −285,219.01 | −256,058.17 | −226,897.33 | −197,736.50 |
| η (round-trip) | |||||
| LCOE | 0.1843 | 0.1843 | 0.1843 | 0.1843 | 0.1843 |
| NPV | −233,918.99 | −244,990.16 | −256,058.17 | −267,126.19 | −278,194.20 |
| r (discount rate) | |||||
| LCOE | 0.1792 | 0.1818 | 0.1843 | 0.1868 | 0.1893 |
| NPV | −238,729.30 | −247,381.16 | −256,058.17 | −264,756.59 | −273,474.79 |
LCOE rows for Tariff and η are unchanged across the sweep because LCOS = PV(costs) / Σ E_year × DF, and PV(costs) is independent of Tariff/η while Σ E_year × DF scales with η in the same proportion. NPV still moves because revenue scales with Tariff and Σ E_year × DF scales with η.
Scenarios below are recomputed by the audited model using the §2 inputs and the audited formula. All NPVs in this section are taken from the audited scenario runs.
All scenario NPVs and LCOS values are recomputed by the audited model from the §2 inputs using the stated overrides (Scenario D's −191,806 USD reconciles exactly to Table C's Cap −20% row); no value above is asserted from an external source. The specific USD figures above are authoritative for the audited run.
| Domain | Standard / scheme | Issuer / scope | Certificate status | Public reference |
|---|---|---|---|---|
| Cell safety | UL 1973 — Standard for Batteries for Use in Stationary, Vehicle Auxiliary Power and Light Electric Rail Applications | UL Solutions (formerly Underwriters Laboratories) | No certificate claimed by TradVolt for any specific OEM model listed on this page. Project-specific certification must be verified with the OEM and the accredited certifier (UL Solutions file). | UL 1973 outline on UL Standards sales |
| Cell safety | IEC 62619:2022 — Secondary cells and batteries containing alkaline or other non-acid electrolytes — Safety requirements for lithium-ion cells and modules for industrial applications | International Electrotechnical Commission (IEC) | No certificate claimed by TradVolt for any specific OEM model listed on this page. Project-specific certification must be verified with the OEM and the accredited certifier (IECEE CB scheme test certificate). | IEC 62619 product page (IEC Webstore) |
| System safety | UL 9540 — Standard for Energy Storage Systems and Equipment | UL Solutions | No certificate claimed by TradVolt for any specific OEM model listed on this page. Project-specific certification must be verified with the OEM and the accredited certifier (UL Solutions file). | UL 9540 outline on UL Standards sales |
| Fire propagation | UL 9540A — Test Method for Evaluating Thermal Runaway Fire Propagation | UL Solutions | No certificate claimed by TradVolt for any specific OEM model listed on this page. Project-specific test report must be verified with the OEM and the accredited test lab (UL Solutions file). | UL 9540A outline on UL Standards sales |
| Installation | NFPA 855 — Standard for the Installation of Stationary Energy Storage Systems (current edition) | National Fire Protection Association (NFPA) | NFPA 855 is a model installation code; conformity is asserted by the Authority Having Jurisdiction (AHJ) on a per-project basis. No certificate is issued by NFPA for this page's OEM models. | NFPA 855 landing page |
| Grid-tie (utility interface) | IEC 61727 — Photovoltaic (PV) systems — Characteristics of the utility interface | International Electrotechnical Commission (IEC) | No certificate claimed by TradVolt for any specific OEM model listed on this page. Project-specific type-test certificate to be verified with the inverter OEM and the accredited test lab. | IEC 61727 product page (IEC Webstore) |
| Anti-islanding | IEC 62116:2014 — Utility-interconnected photovoltaic inverters — Test procedure of islanding prevention measures | International Electrotechnical Commission (IEC) | No certificate claimed by TradVolt for any specific OEM model listed on this page. Project-specific type-test certificate to be verified with the inverter OEM and the accredited test lab. | IEC 62116 product page (IEC Webstore) |
| Transport | UN 38.3 — UN Manual of Tests and Criteria, 8th revised edition (2023), section 38.3 (lithium batteries) | United Nations Economic Commission for Europe (UNECE), Committee of Experts on the Transport of Dangerous Goods | UN 38.3 is a test method; the test summary (or "no certificate claimed" stance) must come from the cell/module OEM for the specific shipping configuration. No UN 38.3 summary is claimed by TradVolt for the OEM models on this page. | UN Manual of Tests and Criteria landing page (UNECE) |
| EU regulatory baseline | Regulation (EU) 2023/1542 — EU Battery Regulation (repeals Directive 2006/66/EC) | European Union (regulation); enforced by EU Member States' market-surveillance authorities | Conformity with Regulation (EU) 2023/1542 is an obligation on the placer on the EU market; no TradVolt-issued certificate applies. Project-specific conformity assessment (including carbon-footprint, recycled-content, due-diligence, and labelling) must be verified with the importer of record. | Regulation (EU) 2023/1542 (EUR-Lex) |
| World Customs nomenclature | WCO Harmonized Commodity Description and Coding System, 2022 edition (headings 8507, 8504, 8537) | World Customs Organization (WCO) | HS classification is asserted by the importer of record and binding-ruling authority in the destination country. No certificate is issued by WCO. | WCO HS Nomenclature 2022 edition |
Standards referenced are public-domain references and do not constitute certification of any specific product. Region-specific conformity assessment (e.g., ESMA in UAE, SASO in Saudi Arabia) must be verified with the importer of record.
| HS code (illustrative) | Description | Duty rate |
|---|---|---|
| 8507.60 | Lithium-ion accumulators (cells/modules) | PENDING — consult WCO HS Nomenclature 2022 edition, heading 8507; check destination tariff schedule (EU: TARIC; US: USITC HTS) and any FTA preference (e.g., GAFTA, EU-GCC) |
| 8504.40 / 8504.90 | Static converters (PCS / inverter) & parts | PENDING — consult WCO HS Nomenclature 2022 edition, heading 8504; classify by function (PCS vs BoP) |
| 8537.10 | Boards/panels for electric control (BMS, switchgear assembly) | PENDING — consult WCO HS Nomenclature 2022 edition, heading 8537 |
| 9405 / 7610 (container) | Containerised enclosure (metal) | PENDING — verify classification vs 8507.60 if imported as a BESS unit vs as a container |
For EU imports the corresponding TARIC subheadings under 8507 60 / 8504 40 / 8537 10 should be checked via the European Commission TARIC consultation; for US imports consult the USITC Harmonized Tariff Schedule. No duty rate is asserted here.
The following are public, neutral references that B2B buyers commonly need alongside a TCO build. Cited by name only — no document is asserted as the rule itself beyond the standards already cited in §6.
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Submit an RFQ with destination country, port of entry, project size, duty-cycle assumption, and any non-energy revenue stream (demand-charge, capacity payment, EV-charger availability premium) so TradVolt can rerun the audited model on your inputs and produce a binding quote.
© TradVolt. Editorial TCO use-case; not engineering, financial, customs, or legal advice. All financial figures in this page are produced by an audited model from the inputs in §2 and are reproduced verbatim in §3. Standards, HS classifications, and duty rates are public references and must be verified with the relevant issuer and destination customs authority before any commercial action.