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BESS - ESU375
Containerised Battery Energy Storage System
The ESU375kw/720kWh is a compact, containerised energy storage unit designed for hybrid, off-grid and grid-connected power systems. It supports sites with variable loads or continuous diesel genset operation by improving power stability, reducing generator reliance, and enabling more efficient energy management without adding unnecessary system complexity.
10FT Containerised Battery Energy Storage System
A compact containerised BESS designed to improve power stability and generator efficiency on industrial sites.
- Reduces diesel genset runtime and low-load operation
- Improves power stability across variable site loads
- Supports hybrid power systems integrating diesel gensets and solar PV
- Enables off-grid and grid-connected operation
- Can be pre-configured within defined power and battery capacity ranges to match site‑specific energy demand.
- Containerised design for simplified transport and deployment
Product Features
The ESU375kW/720kWh integrates proven battery technology with intelligent power control to support stable, efficient site operations.
The system can be pre-configured within defined power and battery capacity ranges, allowing the solution to be right‑sized to site‑specific energy and load requirements. This reduces unnecessary infrastructure, simplifies installation and lowers ongoing operating costs, while ensuring stable, efficient power in harsh and remote environments.
- Highly-efficient energy storage: Designed to operate with high system efficiency, supporting consistent performance over extended operating periods.
- Hybrid system integration: Designed for seamless operation within hybrid power systems, including off-grid, grid-tied, and diesel-solar configurations.
- Smart features: The integrated Power Conversion System manages energy flow between batteries, diesel gensets, solar PV, and site loads.
- Remote monitoring: Provides visibility of system performance, fault detection, and operational status via standard communication protocols.
- Reliable & safe: Uses lithium iron phosphate (LFP) battery chemistry with multi-layer Battery Management System (BMS) protection, integrated thermal management, and module-level fire safety.
- Durable & compliant with AS: Built tough for Australian conditions, the IP54-rated enclosure is designed for operation in harsh and remote site conditions. All units are certified to Australian standards.
- Modular design: Supports straightforward installation, servicing, and potential system expansion.
- Containerised deployment: Delivered as a 10FT containerised BESS, simplifying mobilisation, installation, and relocation.
The ESU375-720 stores energy when generation exceeds site demand and releases it when additional power is required. Through its integrated bidirectional Power Conversion System (PCS), the unit continuously manages energy flow between the battery, diesel gensets, solar PV, and connected loads.
When site demand fluctuates, the system absorbs excess generation or supplies short-duration power to meet peaks, reducing reliance on generators operating inefficiently at low load. This helps maintain stable voltage and frequency conditions across the network.
Within a hybrid power system, the ESU375-720 acts as a responsive buffer, smoothing load profiles and supporting consistent power delivery. The result is improved system stability, more efficient generator operation, and better utilisation of available energy sources.
Typical Applications of Containerised BESS
- Microgrid system for remote and off-grid mine sites
- Mobile power supply for fuel storage and refuelling systems
- Temporary or hire power installations for construction and civil infrastructure projects
- Back-up power, temporary or hire power installations for commercial & industrial industries
Fuelfix BESS in Action
Real-World Operations
EuropeIn a commercial deployment in Europe, SCU implemented a containerised energy storage system to increase solar PV utilisation within an existing power setup. The system stored excess solar generation during low demand periods and discharged it when required, reducing reliance on external energy sources and improving overall system efficiency.
This type of configuration reflects how containerised BESS can be applied in hybrid environments, including Australian mining and infrastructure sites, where integrating solar PV with diesel gensets requires stable, responsive energy management.
Frequently Asked Questions
What problems does the ESU375‑720 solve on smaller industrial sites?
The ESU375‑720 helps stabilise power supply and reduce inefficient generator operation on smaller to mid‑scale sites. It manages short‑term load changes and supports more consistent voltage and frequency.
How does the ESU375‑720 improve generator efficiency?
By storing excess energy and supplying power during demand peaks, the system reduces low‑load running and generator cycling. This supports smoother operation and lower fuel use over time.
When is a 10‑foot containerised BESS the right choice?
A 10‑foot system is well suited where space is limited or where power infrastructure may be temporary or frequently relocated. It provides energy storage without the footprint of larger containerised systems.
What battery technology is used in the ESU375‑720?
The system uses lithium iron phosphate (LFP) batteries, selected for thermal stability, safety, and long cycle life.
Can the ESU375‑720 operate without grid access?
Yes. It supports off‑grid, grid‑connected, and hybrid operation alongside diesel generators and solar PV systems.
