Logistics Park Solar 6 MWp — Australia TCO Use Case

Answer (verdict) & decision table

Equipment: 6,000 kWp Tier-1 mono-PERC bifacial modules on rooftop + carport, paired with 100 kW three-phase string inverters, aluminium rooftop-clip and steel carport mounting. Location: AU logistics / 3PL park, behind-the-meter on a commercial DNSP tariff. Horizon: 25 years. Evidence date: 14 February 2026 (AER 2024–25 DMO determination, ABF Working Tariff snapshot, CEC approved-inverter list, AS/NZS revisions cited). Limitation: figures are the computed Tradvolt model output for this scenario, not a binding offer; capex is a national-average benchmark and site premiums (15–35%) may apply.

1. Use case definition

A logistics / 3PL operator with multiple warehouses, dock canopies and car parks targets a 6,000 kWp rooftop-and-carport PV system, behind-the-meter (BTM), offsetting daytime forklift charging, cold-storage, conveyor and office loads. The scope is realistic for a mid-to-large AU distribution park (≈ 60,000–90,000 m² of usable roof and carport). Grid export is assumed limited to residual surplus on the DNSP / retailer FiT.

Site archetypes covered:

• Single-tenant DC with high daytime load and ~30% roof ratio available.
• Multi-tenant industrial park with shared HV connection and demand aggregation.
• Cold-store operator (24/7 load) — highest self-consumption economics.
• Cross-dock with carport-mounted array over heavy-vehicle lanes.

2. Inputs table (cited)

Cells marked "Model assumption" are bounded inputs the draft did not state; they are not third-party benchmarks and are not sourced facts.

3. TCO formula and worked arithmetic (computed)

All figures below are computed by the Tradvolt scenario model from the inputs in §2 and the cash flow in §4. They are computed for this page; do not re-derive from §3 prose alone.

3.1 Annual energy (year 1)

Annual energy = DC capacity × specific yield.

6,000 kWp × 1,500 kWh/kWp/yr = 9,000,000 kWh/yr (year 1).

3.2 Year-1 generation value

Self-consumed energy = 9,000,000 × 75% = 6,750,000 kWh/yr.
Exported energy = 9,000,000 × 25% = 2,250,000 kWh/yr.

Self-consumption value = 6,750,000 × 0.28 AUD/kWh = 1,890,000 AUD/yr.
Export value = 2,250,000 × 0.06 AUD/kWh = 135,000 AUD/yr.
Total year-1 generation value = 2,025,000 AUD/yr.

3.3 Capex

Capex = 6 MWp × 1,200,000 AUD/MWp = 7,200,000 AUD (t = 0).

3.4 Opex stream

Year-1 opex = (12 + 4) AUD/kWp/yr × 6,000 kWp = 96,000 AUD/yr (split: 72,000 O&M + 24,000 insurance). Opex escalates at 2.5%/yr (O&M driver) per the model's blended treatment.

3.5 Degraded generation

Generation in year t = 9,000,000 × (1 − 0.005 × (t−1)) kWh/yr.

3.6 LCOE (nominal, discounted)

LCOE = (PV of all costs) / (PV of all energy) at r = 7.0%.

PV of costs = Capex + Σ_t=1..25 Opex_t / (1.07)^t = AUD 8,604,612.96.
PV of energy = Σ_t=1..25 Generation_t / (1.07)^t = 100,507,179 kWh.
LCOE = 8,604,612.96 / 100,507,179 = 0.0856 AUD/kWh (8.56 AU¢/kWh, nominal, discounted).

3.7 Simple payback (undiscounted)

Year-1 net cash flow = 2,025,000 − 96,000 = 1,929,000 AUD. Simple payback on capex (cumulative undiscounted net) = 3.66 years (year-by-year, from §4).

3.8 Discounted payback

Cumulative discounted net cash flow crosses zero between years 4 and 5; discounted payback = 4.37 years (year-by-year, from §4).

3.9 25-year NPV

PV of net benefit = PV(generation value) − PV(total cost) = 26,950,588.86 − 8,604,612.96 = AUD 18,345,975.91.

3.10 IRR

Project IRR (unlevered, base case) = 28.15%. Recompute in any lender model before financial close.

4. Computed tables (computed — copy verbatim)

5. Reference equipment models (real, publicly marketed)

Reference models are illustrative of the Tier-1 mono-PERC / 100 kW string-inverter families cited in the §2 inputs; substitutable within the family provided CEC approval and IEC 61215-1:2021 / IEC 62109-1:2021 / AS/NZS 4777.2:2020 certifications are retained.

6. Procurement pathway (B2B)

1. Issue site-specific RFQ with measured roof/carport area, structural survey, asbestos check, HV connection capacity and DNSP export limits.
2. Lock in module brand tier (Tier 1 vs Tier 2) within the Tier-1 mono-PERC ~550 W bifacial family, inverter topology (string vs central) within the 100 kW three-phase string family, and mounting (rooftop clip vs carport).
3. Require EPC to provide: PR guarantee (year-1) per IEC 61724-1:2021, generation guarantee (P50/P75), power-curve, O&M SLA, IP68 BOS, and a 25-yr linear degradation warranty per the IEC 61215-1:2021 / IEC 61215-2:2021 envelope.
4. Tie payment milestones to acceptance test (PR measurement per IEC 61724-1:2021) and not just commissioning.

Submit the project for matching Tradvolt-vetted EPC and module suppliers via the RFQ link below, and download the full datasheet for procurement.

Request a quote (RFQ) — Logistics Park Solar 6 MWp, AU

Download the datasheet (PDF) — Logistics Park Solar 6 MWp, AU

7. Certification & HS code block

7.1 Mini certification block (specific revisions)

• Modules: IEC 61215-1:2021, IEC 61215-2:2021, IEC 61730-1:2016 / IEC 61730-2:2016; AU CEC approved-modules list eligible.
• Inverters: IEC 62109-1:2021 / IEC 62109-2:2021; AS/NZS 4777.2:2020 (DRM support).
• Mounting: AS/NZS 1170.2:2021 (wind), AS 4100:2020 (steel) / AS 1720.1:2010 (timber carport).
• Installation: AS/NZS 5033:2021 (PV arrays), AS/NZS 3000:2018 (Wiring Rules), CEC accreditation for designer/installer.
• Grid connection: DNSP technical requirements (e.g., Energex, Ausgrid, Essential Energy, CitiPower, Jemena, SA Power Networks, Western Power, TasNetworks, Evoenergy, AusNet Services) — confirm per site.

7.2 Indicative HS code block (verify on ABF Working Tariff)

Lookup instructions: Go to the Australian Border Force Working Tariff at https://www.abf.gov.au/working-in-the-industry/working-tariff, enter the HS code, confirm the current duty rate, any anti-dumping/countervailing notices, free-trade-agreement preferences (e.g., ChAFTA, JAEPA, CPTPP, RCEP, AANZFTA, AIFTA, AUKFTA), and GST treatment.

Disclaimer: Indicative HS codes above; duty rates must be confirmed by the importer against the live ABF Working Tariff before any customs declaration. Tradvolt does not provide duty advice and accepts no liability for duty miscalculation.

8. Risks & caveats

• Capex benchmark is a national average; remote, cyclone-rated, or asbestos-roof sites carry premiums of 15–35%.
• DNSP export limits vary; multi-MW BTM export often requires a negotiated connection agreement, not a basic application.
• Yield figures assume <15° tilt, no heavy soiling regime; logistics parks near ports, quarries or arterial roads may need monthly washing, increasing O&M.
• Module and inverter price volatility (polysilicon, lithium, copper, freight) means a 60–90 day re-quote window is prudent before signing EPC.
• Residual value is set to AUD 0 at year 25 — if a salvage / re-deployment value is realised, NPV rises; if a decommissioning cost is incurred, NPV falls.

9. Sources & assumptions (cited)

"Tradvolt convention" has been removed as a source category; inputs without a regulator / certifier / OEM URL are labelled as model assumptions and cited to the scenario model file (Tag A1).