I. Project Background and Pain Points
The current situation of mine energy in Africa:
1)Relying on diesel generators for power supply, fuel costs account for 30% to 50% of the total mining costs
2)The power supply from the power Grid is unstable, with an average annual power outage duration exceeding 200 hours (such as in the Democratic Republic of the Congo and Zambia).
3)It has a high carbon emission intensity and face high pressure from international ESG reviews.
2.Transformation opportunities
The cost of lithium batteries has dropped by 89% over the past decade (with an average price of $139/kWh in 2023).
International carbon financial policy support (such as the African Carbon Exchange)
3. Energy storage technology solution
The customer’s project requires the operation of 3 sets 480KW motors load.
For each 480KW motor load, the corresponding system needs 3 sets of energy storage cabinets. Here list the system topology diagram as follows:
System configuration
| Item | Specification | QTY | Remarks |
| 750kW PCS | 380Vac, 50/60HZ, PFC:-0.99~0.99, three-phase four-wire | 6 | Use 6units 125kW PCS to get 750kW |
| 600kW STS | use for achieving seamless switching from grid power supply to energy storage power supply | 3 | |
| 241kwh*2 Battery | 314 cell, 1P240S, rated voltage 768V. Liquid cooling, aerosol | 6 | |
| EMS | The EMS communicates with the STS, PCS and BMS, and EMS responsible for managing charging and discharging. | 3 |
| Project location | Mozambique |
| Working condition | Charge：0~55 ℃， Discharge:-20~55℃ |
| IP level | IP54 |
| Altitude | <2000m |
