Office Tower EVSE 50-Port TCO — South Africa

Verdict (computed by scenario TCO model): For a Grade-A office tower in South Africa, deploying 50 dual-port 22 kW AC wallboxes (100 connectors) on a 10-year horizon at an 8.00 % discount rate yields an NPV of −9,247,634.95 ZAR. Both simple payback and discounted payback are None (NPV never crosses zero). Per-kilometre landed cost is 1.67 ZAR/km for the EV fleet vs. 5.00 ZAR/km for the displaced ICE fleet — a saving of 3.33 ZAR/km (cumulative +33,290,000 ZAR over the horizon). Equipment: Schneider Electric EVlink Pro AC 22 kW or ABB Terra AC W22 wallbox families. Location: South Africa. Horizon: 10 years. Evidence date: 2026-01-15. Limitation: this is a TCO ledger, not a financial-advisory output; downstream decisions must add utilisation, revenue mix, and tenant chargeback modelling.

Decision Table (computed)

TCO summary (verbatim from scenario model)

Year-by-year cash flow (verbatim from scenario model)

Scope and Deployment Profile

50 dual-port wallboxes (100 charging connectors), 22 kW AC output per port, smart load balancing across the building's existing distribution capacity, RFID and app-based access control, and time-of-use tariff optimisation. Installation in an existing basement parking level with reinforced cable trays and dedicated EV distribution board.

Named equipment (real, publicly marketed models)

This scenario uses one of the following publicly marketed 22 kW AC wallbox families. Either is acceptable for the TCO; the OEM manual revision governs the electrical limits cited below.

• Schneider Electric EVlink Pro AC 22 kW (EVB3S22N4A) — 22 kW, 32 A, 3P+N, T2S socket-outlet, RCD type B-EV (6 mA DC) + RCD type Asi (30 mA), OCPP 1.6 JSON, IK10/IP55, IEC 61851 ed. 3. Public product page: Schneider Electric EVlink Pro AC EVB3S22N4A. Tethered-cable sibling (T2 attached cable): Schneider Electric EVlink Pro AC EVB3S22NCB. EV charging category page: Schneider Electric EV charging category.
• ABB Terra AC W22 (W22-T pedestal, dual-port), Type-2, 22 kW. Public product page: https://new.abb.com/ev-charging/terra-ac-wallbox. Product guides (Terra 94/124/184 family, AC variants): ABB Terra 124/184 NA Product Guide (PDF) and ABB Terra 94/124/184 UL Product Guide (PDF).

Electrical / torque limits (OEM manual citations):

• Schneider Electric EVlink Pro AC EVB3S22N4A — supply 3× 230/400 V AC, 32 A per phase; max output 22 kW; OCPP 1.6 JSON; IK10/IP55 enclosure; integral RCD type B-EV (6 mA DC) + RCD type Asi (30 mA). Supply-terminal torque and DC-leakage trip thresholds: refer to the EVlink Pro AC installation manual revision listed on the Schneider Electric product page.
• ABB Terra AC W22-T — supply 3× 230/400 V AC, 32 A per phase; max output 22 kW; OCPP 1.6J. Supply-terminal torque and configuration limits: refer to the Terra AC W22 installation manual revision listed on the ABB product page.

SOC windows, dynamic load limits, and RF/PEN-fault thresholds are configurable in the OEM back-office; the named manual revision governs any torque (N·m) on the supply terminals and DC leakage trip thresholds at the time of order.

Inputs Table (explicit bounded defaults)

Sensitivity Table (matches scenario model)

Verdict by Scenario (consistent with computed tables)

Low (g = 0%): Most favourable tariff path. Und. TCO 22,339,000 ZAR over 10 years; per-port 446,780 ZAR. NPV remains negative (−9,247,634.95 ZAR base case) — fleet replacement still does not pay back the EVSE on a pure TCO basis. Verdict: Proceed as tenant amenity with explicit utilisation SLA and tenant chargeback model; do not claim fleet payback.

Mid-Low (g = 5%): Und. TCO 25,923,164.81 ZAR, per-port 518,463.30 ZAR. Verdict: Proceed as tenant amenity with utilisation SLA; do not claim fleet payback.

Base (g = 8%): Und. TCO 29,207,478.48 ZAR, per-port 584,149.57 ZAR; PV of costs 21,205,000.00 ZAR; NPV −9,247,634.95 ZAR; TCO/km EV 1.67 vs ICE 5.00 (savings 3.33 ZAR/km; 33,290,000 ZAR over horizon). Verdict: Proceed with explicit utilisation SLA and tenant chargeback model; do not claim fleet payback on a discounted basis — per-km economics are favourable but the front-loaded CapEx is not recovered within 10 years at an 8.00 % discount rate.

High (g = 12%): Und. TCO 33,897,635 ZAR, per-port 677,953 ZAR. Verdict: Conditional — pair with on-site PV or demand-charge mitigation.

Stress (g = 15%): Und. TCO 38,112,936 ZAR, per-port 762,259 ZAR. Verdict: Delay or seek incentive funding; not viable on a pure TCO basis in this scenario.

Mini Certificate

HS Code Block (lookup pending)

Final customs duty rate and VAT treatment require SARS confirmation at the time of import; this page does not assert a duty or VAT rate. For EU export reference (CN code classification lookup): EU TARIC consultation. For US reference: USITC Harmonized Tariff Schedule search. For UK reference: UK Global Tariff. For AU reference: ABF current tariff classification.

Standards and Compliance References

• IEC 61851-1:2017 — Electric vehicle conductive charging system — Part 1: General requirements (TC 69) — IEC Webstore publication page.
• IEC 62196-2:2022 ed.3 — Plugs, socket-outlets, vehicle connectors and vehicle inlets — Conductive charging of electric vehicles — Part 2: Dimensional compatibility and interchangeability requirements for AC pin and contact-tube accessories, up to 480 V AC / 63 A 3-phase (TC 23/SC 23H) — IEC Webstore publication page.
• IEC 62109-1:2010 — Safety of power converters for use in PV power systems — Part 1: General requirements (TC 82) — IEC Webstore publication page (referenced for any PV pairing).
• IEC 62109-2:2011 — Safety of power converters for use in PV power systems — Part 2: Particular requirements for inverters (TC 82); use jointly with IEC 62109-1 — IEC Webstore publication page.
• Open Charge Alliance — OCPP 1.6 / OCPP 2.0.1 protocol (deep protocol URLs unguessable; cite home + protocol name/version in text) — Open Charge Alliance.
• UN Manual of Tests and Criteria, Rev. 7 (ST/SG/AC.10/11/Rev.7) — lithium battery transport classification UN 3480 / UN 3481, UN 38.3 provisions — UNECE publications page.
• NERSA SSEG registration and grid-code reference (for any on-site PV / battery pairing) — NERSA SSEG page.
• EU Battery Regulation (EU) 2023/1542 — EUR-Lex document page.

Procurement Anchor

Request a formal quotation for a 50-port office tower EVSE deployment in South Africa, including wallbox hardware, installation, OCPP software, and 10-year O&M framework:

Request Quote — Office Tower EVSE 50-Port South Africa

Download the printable TCO summary (gated PDF): office-tower-evse-50port-za-tco-summary.pdf

Sources Table (every factual claim cited)

Limitation: Numbers above are produced by TradVolt's scenario TCO model from the named scenario. They are computed for this scenario only; they are not a procurement recommendation, not financial advice, and not a substitute for a SARS-confirmed duty/VAT calculation or for OEM-revised electrical/torque limits at the time of order.