Project Overview
In late 2024, SUNPAL ESS deployed a 500 kW / 1,075 kWh high-voltage containerized battery energy storage system at an events and conference centre in Mbabane, Eswatini. The all-in-one 20-foot unit, featuring LFP cells, advanced BMS, fire suppression, and quiet operation below 68 dB(A), operates in both on-grid and off-grid modes.
Paired with a 500 kWp solar array, the system helps maintain business continuity during load shedding, mitigates cable-theft-related power disruptions, and helps reduce electricity costs through peak-demand management, supporting the venue's green energy goals.
Challenge & Solution
Challenges
- Unreliable grid supply and load shedding could disrupt conferences and venue operations
- Cable theft created additional risks of unexpected power interruptions
- High peak demand increased electricity costs during periods of heavy facility operation
- The venue required reliable backup power without excessive equipment noise
SUNPAL ESS Solutions
- 500 kW / 1,075 kWh high-voltage BESS for reliable backup and energy shifting
- On-grid and off-grid operation for flexible response to grid interruptions
- 500 kWp solar PV integration to increase renewable energy utilization
- Low-noise operation below 68 dB(A), suitable for an active conference venue
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Battery Power | 500 kW |
| Battery Capacity | 1,075 kWh |
| Battery Chemistry | LFP |
| Battery System Type | High-Voltage Containerized BESS |
| Container Configuration | 20-foot All-in-One Unit |
| Operating Mode | On-Grid / Off-Grid |
| Solar PV Capacity | 500 kWp |
| BMS | Advanced Battery Management System |
| Fire Protection | Integrated Fire Suppression |
| Operating Noise | <68 dB(A) |
Project Timeline
SEP 2024 | System Delivery
The 20-foot BESS arrived at the Mbabane facility, ready for installation and integration with the site's existing electrical infrastructure.
OCT 2024 | Site Installation
SUNPAL ESS engineers completed equipment positioning, electrical connections, battery installation, and communication setup for the containerized storage system.
NOV 2024 | Solar & BESS Integration
The 500 kWp solar array was integrated with the 500 kW / 1,075 kWh BESS for coordinated renewable energy management.
NOV 2024 | System Testing
Engineers completed protection checks, BMS verification, operational testing, and on-grid/off-grid mode validation before final system handover.
DEC 2024 | Commissioned
The 500 kW / 1,075 kWh battery energy storage system was successfully commissioned and placed into operation at the Mbabane facility.
