University ESS 3 MWh — South Africa (TCO Use Case)

computed base-case 15-yr TCO: NPV = −373,157 USD; IRR = 2.19%; simple payback = 12.39 yr; discounted payback = none — verdict HOLD. Equipment: 3 MWh / 1.5 MW LFP BESS, ZA, 15-yr horizon, model evidence dated 2026-09-22. Limitation: figures are an indicative engineering model, not a vendor quote.

Indicative 15-year total cost of ownership for a 3 MWh / 1.5 MW battery energy storage system (BESS) sized for a mid-sized South African university campus: peak shaving, demand-charge avoidance, and multi-hour backup during loadshedding. Equipment anchor: CATL EnerC LFP containerised BESS (cells CATL LFP 280 Ah prismatic) and Sungrow ST500CP-250HV string PCS — exact SKU and manual revision to be confirmed at RFQ.

1. Use Case Definition

South African university campus load comprises academic blocks, laboratories, server rooms, student residences, and typically a campus clinic. Eskom loadshedding reached Stage 6 under the 2024 schedule (suspended nationally since March 2024; see Eskom loadshedding hub (Eskom loadshedding hub, stage definitions published by Eskom Distribution), with typical 4–8 hour outages several times per week. A 3 MWh battery delivers ~6–10 hours of partial backup at 0.3–0.5 C-rate — the dominant design driver in this market.

Three revenue/cost-stacking layers are modelled:

• Layer A — Backup resilience: protected kWh for lecture halls, lab freezers, server rooms.
• Layer B — Peak shaving / demand-charge avoidance: reduces Eskom Notified Maximum Demand charges on the evening peak.
• Layer C — Time-of-use arbitrage: charges on Eskom standard time-of-use off-peak periods, discharges on evening peak.

2. Named Equipment Anchor (real, publicly marketed product families)

The TCO is equipment-agnostic on capex ($/kWh × BOP), but the engineering envelope (DC voltage window, SOC limits, torque/bolting specs) is anchored to two real, publicly marketed product lines. Final SKU and manual revision to be confirmed by vendor at RFQ.

Assumption (model): chemistry = LFP prismatic, DoD = 90 %, round-trip efficiency = 92 %, DC voltage window per CATL EnerC datasheet to be confirmed at RFQ. Indicative — vendor to confirm.

3. Model Inputs (cited sources or explicit model assumptions)

4. Computed TCO — Verbatim (computed)

Cash-flow inputs implied by the table: capex = 1,218,000 USD at Year 0 (3,000 × 280 × 1.45); 1.0 cycle/day base; degradation reduces delivered kWh year-on-year; opex escalates per the bounded assumption in row #16.

6. Verdict-by-Scenario (input set disclosed)

These scenarios sensitise three independent inputs simultaneously (cells #4, #5, #10 of §3) and are the only scenario rows computed from a fully stated input set. Intermediate cells (single-axis sensitivity) are not republished here — only the COMPUTED TABLES in §4 are computed for any monetary figure on this page.

7. Mini Certification Block (indicative — vendor to confirm at RFQ)

8. HS / Tariff Block (lookup paths only — no rate asserted as fact)

9. Numbered Source Table (R1)

© 2026 tradvolt.com — EN B2B green-tech trade. computed figures in §4 are computed. Prose inputs in §3 are explicit bounded model assumptions, not sourced facts, and must be re-priced at RFQ. No claim is made about any specific OEM, broker, or freight forwarder. Trademarked product names belong to their respective owners.