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Aurea Energy presents a utility-scale 2.5MW / 5MWh PV + Battery Energy Storage System for a commercial application in South Africa. This integrated solution combines 20 × 125kW three-phase string inverters with a 5MWh LFP battery bank and 4 PCS units, delivering reliable, dispatchable power for peak shaving, load shifting, and grid support in South Africa's evolving energy landscape.
South Africa faces persistent energy supply challenges with frequent load shedding and rising electricity tariffs. This system directly addresses these challenges: the 2.5MW PV array generates clean solar energy during daylight hours, while the 5MWh battery storage captures surplus generation and provides up to 2 hours of full-load backup — ensuring business continuity, reducing diesel generator dependency, and delivering significant operational cost savings.
| Item | Model / Specification | Qty | Remark |
|---|---|---|---|
| PV Panel | High-efficiency solar panels | ~7,000 pcs | ~2.5MWp total · matching inverter capacity |
| PV Combiner Box | Multi-input DC combiner | 20 pcs | One per inverter |
| PV String Inverter | 125kW Three-Phase · 10 MPPT | 20 pcs | 2.5MW total · 18 PV inputs each |
| Battery Pack | LFP 51.2V 280AH · 14.34kWh each | ~350 pcs | ~15 packs per cluster |
| Battery Cluster | 215.04kWh Lithium Battery Cluster | ~24 clusters | 5MWh total capacity |
| High Voltage Box | BMS controller · per cluster | ~24 pcs | One per battery cluster |
| Battery Combiner Cabinet | 1250A DC aggregation | 2 pcs | 5 inputs / 1 output |
| PCS | Bi-directional Power Conversion System | 4 pcs | Grid-forming capability |
| Mounting System | Ground / roof mount | 1 set | For ~7,000 panels |
| DC Cables & Connectors | PV1-F cables · MC4 connectors | 1 set | Complete wiring |
The system employs 20 × 125kW three-phase string inverters, each featuring 10 independent MPPT channels and 18 PV string inputs. This distributed MPPT architecture maximises energy harvest under partial shading and non-uniform panel conditions — critical for South Africa's variable cloud patterns. Each inverter is protected by a dedicated DC breaker, and the total 2.5MW PV capacity is aggregated on the AC side for grid connection.
The 5MWh LFP battery energy storage system is built from 51.2V 280AH battery packs, organised into 215.04kWh clusters. Each cluster integrates 15 battery packs with a dedicated high-voltage BMS control box, providing multi-level protection and individual cell monitoring. Multiple clusters feed into 1250A battery combiner cabinets for DC aggregation, with power conversion handled by 4 bi-directional PCS units. Key features include:
The complete system is managed through an integrated EMS platform. Modbus RS485 communication links all inverters, BMS units, and PCS controllers to a central data logger, with cloud connectivity enabling remote monitoring, performance analytics, fault diagnostics, and real-time dispatch control. The system supports automatic mode switching between grid-connected, islanded, and peak-shaving modes based on pre-configured schedules or real-time grid conditions.
South Africa's energy market presents unique challenges — frequent load shedding, rising Eskom tariffs, and strong solar irradiation. This 2.5MW / 5MWh PV+BESS system converts these challenges into competitive advantages: energy security, predictable electricity costs, and a clear path to decarbonisation.
| Metric | Value | Notes |
|---|---|---|
| Installed PV Capacity | 2,500 kWp | 20 × 125kW inverters |
| Annual PV Generation (est.) | ~4,500 MWh/year | Based on South Africa average GHI 5.0 kWh/m²/day |
| Battery Usable Capacity | 5,000 kWh | LFP · 90% DoD |
| Backup Duration at Full Load | 2 hours | At rated 2.5MW output |
| Daily Cycling (Peak Shaving) | 1 full cycle/day | 4,500 kWh/day throughput |
| Estimated Payback | 3–5 years | Dependent on tariff structure & self-consumption ratio |
| CO₂ Avoided Annually | ~4,500 tonnes | Based on Eskom grid emission factor ~1 kg CO₂/kWh |
Whether you're evaluating a single-site commercial installation or planning a multi-site rollout across South Africa, send us your enquiry and we'll respond within one business day with a tailored proposal. Ask about our local installation partner network and financing options for the Southern African market.
