A 16-port, 7 kW AC EVSE bank at a single Australian supermarket site is costed against an ICE-fleet counterfactual over a 10-year horizon at a 6.00% real discount rate. The deployment is modelled using Sungrow AC011E twin-head 7 kW AC chargers (publicly listed by Sungrow) alongside a CATL-supplied LiFePO4 buffer option for demand-charge management. Verdict (computed, from the COMPUTED TABLES below): NPV AUD 350,044; simple payback 0.99 yr; discounted payback 1.05 yr; TCO/km AUD 0.129 (EV) vs AUD 0.316 (ICE), savings AUD 0.187/km, savings over horizon AUD 1,199,500. Equipment: Sungrow AC011E (model family). Location: single Australian supermarket site (NSW indicative tariff). Horizon: 10 years. Evidence-date: 2026-09-22.
| Metric | Value | Reading |
|---|---|---|
| NPV (AUD) | 350,044.41 | Strongly positive under base assumptions |
| Simple payback (year) | 0.9888 | Recovers capex inside year 1 |
| Discounted payback (year) | 1.05 | Recovers capex inside year 2 (discounted) |
| TCO per km — EV (AUD/km) | 0.1286 | Counterfactual fleet operating cost |
| TCO per km — ICE (AUD/km) | 0.3160 | Replaced ICE fleet operating cost |
| Savings per km (AUD/km) | 0.1874 | 2.46× cost ratio per km in EV's favour |
| Savings over horizon (AUD) | 1,199,500.00 | 10-year undiscounted operating savings |
An Australian supermarket operator is evaluating a 16-port AC EVSE bank in its customer car park. The site has a three-phase 400 V supply, available rooftop solar, and a 250 A service head. Customer dwell-time charging, loyalty footfall, and any future state-level charging rebates are the strategic motivators. The model below isolates the full cost-side and a fleet-side benefit counterfactual against an ICE baseline.
| Item | Specific model / family | OEM | Public source (allow-listed) |
|---|---|---|---|
| AC EVSE — primary | Sungrow AC011E — 7 kW AC twin-head EV charger (commercial AC EVSE product family) | Sungrow | https://www.sungrowpower.com/en (OEM landing — model page JS-rendered; AC011E model confirmed against public Sungrow commercial-EVSE catalogue at RFQ) |
| Optional buffer storage (demand-charge management) | CATL LiFePO4 rack module from the EnerC product family (stationary BESS, lithium-iron-phosphate) | CATL | https://www.catl.com/en/ess/ (CATL ESS landing — model pages JS-rendered; EnerC model family confirmed at RFQ) |
| Network / OCPP back-office | OCPP 1.6 / 2.0.1 compliant SaaS (any OCPP-listed vendor; OCPP is the open protocol, not a single product) | Open Charge Alliance (protocol) | https://www.openchargealliance.org/ |
Sungrow AC011E is named here as the model/family being costed. Exact hardware revision, firmware revision, and any regional SKU suffix are confirmed by Tradvolt at the RFQ stage against the current Sungrow datasheet; this page does not assert sub-model specifics beyond the family designation. The Datasheet PDF on this page is the Tradvolt-curated packaging spec for the 16-port bundle; the OEM master datasheet is supplied with the RFQ.
| Input | Value | Unit | Source |
|---|---|---|---|
| Port count | 16 | ports | Design brief (this analysis) |
| Power per port | 7 | kW AC | IEC 61851-1:2017 — Mode 3 / Case C, single-phase 32 A — referenced via IEC webstore; AS/NZS 61851.1 adopts IEC 61851-1 in AU |
| EVSE unit cost (supply only) | 1,650 | AUD/port | Indicative supply price for Sungrow AC011E family at 16-port volume; bound at RFQ — model assumption |
| Installation labour + materials | 1,250 | AUD/port | AU electrical-contractor bench (Switchboard upgrade one-off line below); compliant with AS/NZS 3000:2018 Wiring Rules (Standards Australia) — model assumption, validated at RFQ |
| Switchboard upgrade (one-off) | 8,500 | AUD/site | AU service-head upgrade allowance — model assumption |
| Network / OCPP back-office (annual) | 220 | AUD/port/yr | OCPP SaaS pricing band — protocol reference: Open Charge Alliance; model assumption |
| Preventative maintenance | 110 | AUD/port/yr | AU service-contract bench — model assumption |
| Insurance allocation | 40 | AUD/port/yr | Operator estimate — model assumption, bounded |
| Tariff (blended) | 0.28 | AUD/kWh | Indicative AU small-business peak/off-peak blend — confirm against current AER-published offer; model assumption |
| Solar self-consumption offset | 25 | % of kWh | Operator estimate — model assumption, bounded |
| Analysis horizon | 10 | years | Standard TCO horizon (this analysis) |
| Discount rate | 6.00 | % real | Standard TCO discount (this analysis) |
The COMPUTED TABLES below include an EV-vs-ICE fleet counterfactual. The following defaults are bounded model assumptions (not third-party facts) and are varied only via the COMPUTED TABLES:
| Input | Value | Note |
|---|---|---|
| asset.ev_fleet.km_per_year | 64,000 | Derived: 16 vehicles × 4,000 km/yr each — bounded model assumption |
| asset.ev_fleet.kwh_per_km | 0.165 | AU light-commercial BEV blended — bounded model assumption |
| asset.ev_fleet.diesel_l_per_km | — | Not applicable to EV side |
| asset.ev_fleet.diesel_per_l | — | Not applicable to EV side |
| asset.ev_fleet.maint_ev_per_km | 0.045 | AUD/km — bounded model assumption |
| asset.ev_fleet.maint_ice_per_km | 0.110 | AUD/km — bounded model assumption |
| asset.ev_fleet.ice_capex_per_vehicle | 45,000 | AUD — bounded model assumption |
| residual_value.amount | 0 | AUD — bounded model assumption (no terminal residual in COMPUTED TABLES) |
| residual_value.year | 10 | Year of unwound residual — bounded model assumption |
| Energy drawn (counterfactual) | 147,168 kWh/yr (gross) → 110,376 kWh/yr (net of 25% solar offset) | From design inputs only; the COMPUTED TABLES record kWh=0.0000 per year because the TCO engine for this scenario carries fleet operating cost separately, not as an EVSE-side energy line. |
| Metric | Value |
|---|---|
| Currency | AUD |
| Horizon (years) | 10 |
| Discount rate | 6.00 % |
| Total undiscounted cost (AUD) | 119,722.35 |
| Total discounted cost / PV of costs (AUD) | 102,159.34 |
| Total undiscounted benefit (AUD) | 614,400.00 |
| Total discounted benefit (AUD) | 452,203.75 |
| NPV (AUD) | 350,044.41 |
| IRR | 1.01 |
| Simple payback (year) | 0.9888 |
| Discounted payback (year) | 1.05 |
| TCO per km — EV (AUD/km) | 0.1286 |
| TCO per km — ICE (AUD/km) | 0.3160 |
| Savings per km (AUD/km) | 0.1874 |
| Savings over horizon (AUD) | 1,199,500.00 |
| Year | Cost (AUD) | Benefit (AUD) | Net (AUD) | Discount factor | Discounted net (AUD) | Energy (kWh) |
|---|---|---|---|---|---|---|
| 0 | 54,900.00 | 0.0000 | -54,900.00 | 1.00 | -54,900.00 | 0.0000 |
| 1 | 5,920.00 | 61,440.00 | 55,520.00 | 0.9434 | 52,377.36 | 0.0000 |
| 2 | 6,038.40 | 61,440.00 | 55,401.60 | 0.8900 | 49,307.23 | 0.0000 |
| 3 | 6,159.17 | 61,440.00 | 55,280.83 | 0.8396 | 46,414.85 | 0.0000 |
| 4 | 6,282.35 | 61,440.00 | 55,157.65 | 0.7921 | 43,690.02 | 0.0000 |
| 5 | 6,408.00 | 61,440.00 | 55,032.00 | 0.7473 | 41,123.11 | 0.0000 |
| 6 | 6,536.16 | 61,440.00 | 54,903.84 | 0.7050 | 38,705.04 | 0.0000 |
| 7 | 6,666.88 | 61,440.00 | 54,773.12 | 0.6651 | 36,427.25 | 0.0000 |
| 8 | 6,800.22 | 61,440.00 | 54,639.78 | 0.6274 | 34,281.67 | 0.0000 |
| 9 | 6,936.22 | 61,440.00 | 54,503.78 | 0.5919 | 32,260.70 | 0.0000 |
| 10 | 7,074.95 | 61,440.00 | 54,365.05 | 0.5584 | 30,357.16 | 0.0000 |
All figures in the two tables above are the COMPUTED TABLES supplied to this page by the computed Tradvolt model; they are computed. No figure in the prose (worked derivation, sensitivity, or verdict) overrides these numbers. The energy column is reported as 0.0000 kWh/yr because, for the scenario costed, the TCO engine treats the fleet operating cost on the EV side as the per-km stream and does not book an EVSE-side kWh line; the EVSE-side gross/net kWh figures in §4 are design inputs only.
| Item | HS candidate | Description (WCO HS 2022) | AU import duty | GST | Lookup path |
|---|---|---|---|---|---|
| AC EVSE (≤22 kW) | 8537.10 | Boards, panels, consoles, desks, cabinets and other bases, for electric control or distribution of electricity | PENDING | 10% (standard) | abf.gov.au — Working Tariff |
| EVSE cables & connectors | 8544.42 | Other electric conductors, fitted with connectors | PENDING | 10% (standard) | abf.gov.au — Working Tariff |
Confirm the exact duty rate using the Australian Border Force Working Tariff and the ATO GST schedule at ato.gov.au. Use the product's binding tariff ruling if one exists on the ABF database. Rates above are marked PENDING and have not been asserted as fact. Where the importer needs an EU export classification, use the EU TARIC consultation tool at ec.europa.eu/.../taric_consultation.jsp; for the US use the USITC HTS search at hts.usitc.gov.
Disclaimer: Tradvolt does not provide legal, customs, or tax advice. The HS code and duty information above is indicative only. Importers must obtain their own binding ruling before relying on a duty classification or rate.
Compliance with the above does not substitute for installer sign-off. Engage a licensed electrical contractor (LEC) and, where export occurs, an accredited designer under the relevant state scheme.
Request a formal RFQ for the Sungrow AC011E 16-port bundle (with optional CATL EnerC BESS buffer), or download the Tradvolt-curated packaging datasheet for your own re-model. OEM master datasheets and firmware revision are supplied with the RFQ.
Document slug: supermarket-evse-16port-au-r9. Evidence-date: 2026-09-22. Equipment: Sungrow AC011E (model family) — hardware/firmware revision confirmed at RFQ. All financial figures are the COMPUTED TABLES supplied to this page by the computed Tradvolt model and are computed. Standards are referenced by designation + edition + issuer only; verify current edition before reliance. Not investment, legal, customs, or tax advice.