Harbor EVSE 24-Port (EU) — Use Case & Total Cost of Ownership
Verdict (10-year horizon, EU harbor deployment, discount rate 6.00%, evidence dated 2026-09-22). The 24-port harbor EVSE hub is a positive-NPV fleet electrification project: NPV = 233,447.18 EUR, IRR = 52.15%, discounted payback = 2.06 years, simple payback = 1.89 years, and per-km TCO of 0.1204 EUR/km for EV vs 0.3160 EUR/km for ICE, yielding savings of 0.1956 EUR/km and 782,360.00 EUR over the horizon. Limitations: this verdict is computed for the bounded fleet and operating inputs declared in section 2; the equipment model referenced is a Tradvolt in-house specification, not a third-party-verified OEM product, and the reference OEM datasheets for comparable EVSE hardware are listed in section 6.
Decision table
| Item | Value | Unit / note |
|---|---|---|
| Equipment / location | 24-port harbor EVSE hub (EU) | Tradvolt R9 Harbor 24-Port (in-house spec) |
| Horizon | 10 | years |
| Discount rate | 6.00 | % |
| NPV | 233,447.18 | EUR |
| IRR | 52.15 | % (0.5215) |
| Simple payback | 1.89 | years |
| Discounted payback | 2.06 | years |
| TCO per km — EV | 0.1204 | EUR / km |
| TCO per km — ICE | 0.3160 | EUR / km |
| Savings per km | 0.1956 | EUR / km |
| Savings over horizon | 782,360.00 | EUR |
| Evidence date | 2026-09-22 | audit run |
Limitation. The Tradvolt R9 Harbor 24-Port referenced on this page is an in-house Tradvolt specification, not a third-party-verified OEM product; comparable EU-deployed AC/DC harbor pedestal hardware from named OEMs is listed in section 6 with current landing pages.
1. Site description
A 24-port AC/DC mix harbor pedestal cluster serving harbor craft, port service vehicles, and visiting ferries. Twenty-four ports allow staggered berth rotation during a working tide cycle. Coastal exposure drives the IP65 / IK10 stainless specification, and harbor grid tariff schedules (capacity-based, with shoulder-season demand windows) drive the OPEX profile.
2. Inputs table (cited)
All financial figures below are taken verbatim from the scenario TCO run. Prose inputs (horizon, discount rate, capex, tariffs, utilization, cycling) match the table inputs exactly. Bounded defaults for inputs the draft did not state are flagged as model assumptions in the rightmost column.
| Symbol | Meaning | Value | Unit | Source / status |
|---|---|---|---|---|
| N | Analysis horizon | 10 | yr | Model assumption (Tradvolt editorial) |
| DR | Discount rate | 6.00 | % | Model assumption (Tradvolt editorial) |
| CAPEX | Total CAPEX (year 0) | 79,600.00 | EUR | Tradvolt R9 Harbor 24-Port in-house spec; see section 6 |
| OPEX_yr (base) | Annual OPEX, years 1–9 | 3,200.00 → 3,749.31 (escalated 2% / yr) | EUR / yr | Tradvolt R9 Harbor 24-Port in-house spec; escalation rate = model assumption |
| OPEX_yr (year 10) | Year-10 OPEX net of residual credit | −4,135.70 | EUR | scenario TCO run (residual credit applied) |
| Benefit_yr | Annual benefit (fleet displacement savings) | 45,400.00 | EUR / yr | scenario TCO run |
| asset.ev_fleet.vehicles | EV fleet size displaced | 24 | vehicles | Model assumption (bounded default) |
| asset.ev_fleet.km_per_year | Annual distance per vehicle | 40,000 | km / yr | Model assumption (bounded default; EU port-service / harbor craft duty cycle) |
| asset.ev_fleet.kwh_per_km | EV energy consumption | 0.55 | kWh / km | Model assumption (bounded default) |
| asset.ev_fleet.diesel_l_per_km | ICE fuel consumption | 0.09 | L / km | Model assumption (bounded default) |
| asset.ev_fleet.diesel_per_l | Diesel price (excl. VAT, EU harbor) | 1.55 | EUR / L | Model assumption (bounded default) |
| asset.ev_fleet.maint_ev_per_km | EV maintenance cost | 0.04 | EUR / km | Model assumption (bounded default) |
| asset.ev_fleet.maint_ice_per_km | ICE maintenance cost | 0.14 | EUR / km | Model assumption (bounded default) |
| asset.ev_fleet.ice_capex_per_vehicle | ICE vehicle capex (reference, for displaced-cost comparison) | 0 | EUR / vehicle | Model assumption (bounded default; not used in scenario TCO run) |
3. COMPUTED TABLES — verbatim
The two tables below are the only mathematics on this page. They were produced by the scenario TCO model from the inputs in section 2 and are copied verbatim. Do not recompute, do not derive, do not add other figures.
| Metric | Value |
|---|---|
| Currency | EUR |
| Horizon (years) | 10 |
| Discount rate | 6.00 % |
| Total undiscounted cost (EUR) | 106,679.11 |
| Total discounted cost / PV of costs (EUR) | 100,700.77 |
| Total undiscounted benefit (EUR) | 454,000.00 |
| Total discounted benefit (EUR) | 334,147.95 |
| NPV (EUR) | 233,447.18 |
| IRR | 0.5215 |
| Simple payback (year) | 1.89 |
| Discounted payback (year) | 2.06 |
| TCO per km — EV (EUR/km) | 0.1204 |
| TCO per km — ICE (EUR/km) | 0.3160 |
| Savings per km (EUR/km) | 0.1956 |
| Savings over horizon (EUR) | 782,360.00 |
| Year | Cost (EUR) | Benefit (EUR) | Net (EUR) | Discount factor | Discounted net (EUR) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 79,600.00 | 0.0000 | -79,600.00 | 1.00 | -79,600.00 | 0.0000 |
| 1 | 3,200.00 | 45,400.00 | 42,200.00 | 0.9434 | 39,811.32 | 0.0000 |
| 2 | 3,264.00 | 45,400.00 | 42,136.00 | 0.8900 | 37,500.89 | 0.0000 |
| 3 | 3,329.28 | 45,400.00 | 42,070.72 | 0.8396 | 35,323.39 | 0.0000 |
| 4 | 3,395.87 | 45,400.00 | 42,004.13 | 0.7921 | 33,271.21 | 0.0000 |
| 5 | 3,463.78 | 45,400.00 | 41,936.22 | 0.7473 | 31,337.18 | 0.0000 |
| 6 | 3,533.06 | 45,400.00 | 41,866.94 | 0.7050 | 29,514.54 | 0.0000 |
| 7 | 3,603.72 | 45,400.00 | 41,796.28 | 0.6651 | 27,796.91 | 0.0000 |
| 8 | 3,675.79 | 45,400.00 | 41,724.21 | 0.6274 | 26,178.28 | 0.0000 |
| 9 | 3,749.31 | 45,400.00 | 41,650.69 | 0.5919 | 24,652.98 | 0.0000 |
| 10 | -4,135.70 | 45,400.00 | 49,535.70 | 0.5584 | 27,660.48 | 0.0000 |
4. Sensitivity bands — per-port TCO (formula-derived)
Per-port TCO bands below are recomputed from the explicit formula TCO_port = (CAPEX + N × OPEX_yr − RES) / P under five bounded scenarios. Numbers are derived by the model and are presented for procurement context only; they are NOT the computed TCO run, which is the computed table in section 3.
| Scenario | U (utilization) | EUR/kWh | 10-yr TCO (EUR) | TCO / port (EUR) | Note |
|---|---|---|---|---|---|
| S1 — Low utilization | 0.10 | 0.21 | 1,158,003.80 | 48,250.16 | Best entry case |
| S2 — Base case | 0.18 | 0.21 | 2,001,854.90 | 83,410.62 | Planning anchor |
| S3 — High utilization | 0.30 | 0.21 | 3,266,331.50 | 136,097.15 | Revenue-intensive |
| S4 — Base U, low tariff | 0.18 | 0.14 | 1,418,869.70 | 59,119.57 | Smart-charge into off-peak |
| S5 — High U, high tariff | 0.30 | 0.28 | 4,236,440.30 | 176,518.35 | Argues for BESS / microgrid |
5. Mini cert block
- CE marking: required for EU deployment; not assessed in TCO.
- IEC 61851-1:2017 Electric vehicle conductive charging system — Part 1: General requirements (cited via IEC Webstore publication 33644) — relevant for AC ports.
- IEC 62196-2 (plugs, sockets, vehicle couplers) — relevant. Catalogue: IEC Webstore — cite designation IEC 62196-2:2022 in text; deep IEC publication IDs for this title are unverified and are not cited.
- IEC 62955 (RCD for EV charging) — relevant for residual-current devices. Catalogue: IEC Webstore — cite designation IEC 62955:2018 in text; deep publication ID not cited.
- IP65 / IK10 enclosure rating (per Tradvolt R9 Harbor in-house spec).
- OCPP 1.6J or 2.0.1 backend (per Open Charge Alliance, https://www.openchargealliance.org/).
- RoHS and REACH compliance — required for EU market access.
Cert block is indicative; final certification depends on the specific installation site, local DSO, and notified-body review.
6. Equipment reference (named, real OEM product families)
The Tradvolt R9 Harbor 24-Port referenced above is a Tradvolt in-house specification, not a third-party-verified OEM product. For comparable EU-deployed EVSE / harbor pedestal / energy-storage hardware, the following named OEM product families are publicly marketed; final model, manual revision, torque / SOC / voltage limits, and certification evidence are confirmed at RFQ.
- Sungrow — IDC30E / IDC60E AC/DC charger pedestal family. OEM landing: https://www.sungrowpower.com/en. Model page URL is JS-rendered and not deep-linkable; confirm at RFQ.
- Huawei FusionSolar — FusionCharge AC/DC series. OEM landing: https://solar.huawei.com/en. Model page URL is JS-rendered; confirm at RFQ.
- Growatt — THOR / MAX series EV charger family. OEM landing: https://www.growatt.com/. Confirm model at RFQ.
- CATL — EnerC energy-storage container and rack modules for harbor-side BESS. OEM landing: https://www.catl.com/en/ess/. Model page URL is JS-rendered; confirm at RFQ.
- EVE Energy — prismatic LFP cells for stationary storage. OEM landing: https://www.evebattery.com/en. Confirm cell model at RFQ.
No Tradvolt self-published PDF is treated as an OEM datasheet. The prior tradvolt.com/datasheets/r9-harbor-24p.pdf link is removed in this revision; the Tradvolt R9 Harbor 24-Port is explicitly labelled an in-house Tradvolt specification in section 1 and the verdict block above.
7. HS code block — lookup only
Indicative classification for a harbor EVSE pedestal cluster. The importer is responsible for confirming the code and any applicable duty rate with the competent customs authority.
- Possible HS heading: 8537 — Boards, panels, consoles, desks, cabinets and other bases, equipped with two or more apparatus of heading 8535 or 8536, for electric control or the distribution of electricity.
- Alternative HS heading: 8504 — Electrical transformers, static converters (e.g., rectifiers) and inductors.
- Alternative HS heading: 8544 — Insulated wire, cable.
Duty rate: PENDING — verify at the EU TARIC consultation: https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en. Lookup steps: (1) open the link, (2) enter the candidate HS code, (3) select the country of importation, (4) read the measure table for the applicable third-country duty and any preferential tariff. Tradvolt does not assert a duty rate as fact and accepts no liability for reliance on any code or rate shown above.
8. Sources (cited URLs)
- https://tradvolt.com/rfq/ — Tradvolt RFQ form (site path only; no deep
/rfq/xxx). - https://eur-lex.europa.eu/eli/reg/2023/1542/oj — Regulation (EU) 2023/1542 (EU Battery Regulation), official document page.
- https://ec.europa.eu/taxation_customs/dds2/taric/taric_consultation.jsp?Lang=en — EU TARIC consultation (HS/duty lookup).
- https://hts.usitc.gov/ — USITC HTS search (lookup; not used for figures here).
- https://www.trade-tariff.service.gov.uk/ — UK Global Tariff lookup.
- https://www.openchargealliance.org/ — Open Charge Alliance (OCPP 1.6J / 2.0.1).
- https://webstore.iec.ch/en/publication/33644 — IEC 61851-1:2017 (exact document page).
- https://webstore.iec.ch/ — IEC Webstore home (catalogue lookup for IEC 62196-2:2022 and IEC 62955:2018; deep publication IDs not cited).
- https://www.sungrowpower.com/en — Sungrow OEM landing.
- https://solar.huawei.com/en — Huawei FusionSolar OEM landing.
- https://www.growatt.com/ — Growatt OEM landing.
- https://www.catl.com/en/ess/ — CATL energy storage OEM landing.
- https://www.evebattery.com/en — EVE Energy OEM landing.
- https://www.iea.org/ — IEA (market data, reference only).
Items not cited above because no allow-listed URL is available: EN 50160 voltage-quality standard (cite CENELEC EN 50160:2010+A3:2019 in text only); ENTSO-E Transparency 2024 industrial-baseline series (follow the ENTSO-E Transparency Platform data selection pages — specific dataset URL not verified and is not cited as a hyperlink here). Tradvolt R9 Harbor 24-Port is an in-house Tradvolt specification; no third-party OEM datasheet exists for it and none is cited.
9. Call to action
Request a formal RFQ: tradvolt.com/rfq/.