Fuelfix Expands Go-Greener Fleet with BESS & GEN II Batteries

Fuelfix’s fleet expansion supports larger loads, improves power reliability and strengthens hybrid energy delivery across mining, construction and industrial applications

Perth, Australia – March 11, 2026

Fuelfix has expanded its Go-Greener hybrid energy fleet, introducing containerised Battery Energy Storage Systems (BESS) alongside upgrades to its established ESU50, ESU100 and ESU150 battery systems with the enhanced GEN II units.

The fleet expansion reflects increasing demand from mining, civil construction and industrial customers for hybrid power solutions that improve fuel efficiency, site reliability and compliance, while remaining practical for temporary, remote and high-risk operating environments.

Rather than replacing diesel generation, Fuelfix’s hybrid systems are designed to optimise how energy is produced and used on site; reducing generator run hours, lowering fuel consumption, improving power quality and strengthening resilience where grid access is constrained or unavailable.

“The market is moving quickly, but the operational reality on site hasn’t changed,” said Jonathan Elsley, General Manager Go-Greener at Fuelfix. “Customers still need dispatchable, reliable power — but they also need to demonstrate better energy performance. Our expanded Go-Greener fleet is about meeting both requirements.”

Proven ESU hybrid power systems, evolved through field experience

Fuelfix’s ESU50, ESU100 and ESU150 battery systems, supplied in partnership with Sicon Chat Union (SCU), have been deployed over the last 2 years across harsh operating environments, including active mine sites and remote civil projects.

During this period, the systems have demonstrated high reliability, with no field issues recorded, while enabling customers to reduce diesel consumption, generator maintenance and operating costs through hybrid operation.

Drawing on feedback from Fuelfix field teams and mining customers, Fuelfix and SCU have worked closely to further refine the system and structural design to align it more closely with mine-spec handling, safety and durability requirements.

This work has culminated in the development of the GEN II system, scheduled to begin entering the Fuelfix fleet from July 2026.

GEN II platform: mine-spec enhancements

The GEN II ESU platform incorporates a series of targeted design improvements, including:

• Rigid caged frame with dedicated lifting and tie-down points
• Flush external design with no protruding elements to reduce transport and handling damage
• Epoxy-coated electrical boards to minimise dust and moisture ingress
• Integrated isolation transformer for enhanced safety and fault containment
• Internally segregated electrical design for improved safety and reliability
• Raised front-panel cable entry for safer access and improved cable management
• Recessed outlet panels for enhanced protection of electrical interfaces
• Improved dust ingress for mining environments

“GEN II reflects what we’ve learned from operating these systems on real sites,” said Jonathan E. “It’s refining a proven reliable design to further enhance safety and minimise maintenance — not add complexity.”

Hybrid integration across common generator sizes

The ESU50, ESU100 and ESU150 systems are designed to integrate with existing diesel generators, supporting hybrid configurations commonly used across mine and construction sites:

• ESU50 – typically paired with 40–60 kVA generators
• ESU100 – typically paired with 80–125 kVA generators
• ESU150 – typically paired with 150–250 kVA generators

These hybrid pairings enable load smoothing, peak shaving and reduced low-load operation, allowing generators to run closer to optimal efficiency.

Introducing containerised BESS to the Go-Greener fleet

Fuelfix is also expanding its fleet to include containerised BESS systems, extending its hybrid capability to larger loads and more complex site power requirements.

Fuelfix’s containerised BESS units are purpose-designed for off-grid, grid-tied and hybrid power applications, integrating lithium iron phosphate (LFP) batteries with a bidirectional power conversion system to manage energy from diesel generators, solar PV, grid connections and site loads.

Available in 10-foot, 20-foot and 40-foot container formats, the systems offer rated power from 375 kW to 1.25 MW with energy capacities up to 2.4 MWh, making them suitable for:

• Remote and off-grid mine sites
• Construction and infrastructure projects
• Temporary and hire power applications
• Hybrid solar-diesel microgrids
• Industrial facilities requiring improved power stability and resilience

Key features of the containerised systems include:

• Integrated isolation transformer and static grid/off-grid switching
• IP54-rated containerised design for harsh environments
• Low-noise operation and reduced generator runtime
• Modular architecture for scalability and serviceability
• Remote monitoring, diagnostics and performance analytics

Hybrid energy as a productivity and risk-management tool

Across both skid-based and containerised systems, Fuelfix’s Go-Greener offering is focused on behind-the-meter optimisation, not energy market exposure. The systems are deployed to improve site performance through fuel reduction, load management, power quality and resilience.

All solutions are available through flexible hire, sale and service models, aligning with contractor-led project delivery and OPEX-driven decision-making. Each deployment is supported by site-specific load analysis, commissioning and performance reporting.

With the addition of containerised BESS and the rollout of the GEN II platform, Fuelfix believes it now offers the market-leading hybrid energy fleet for mining and civil construction applications.
“Hybrid power is becoming a baseline expectation,” said Jonathan E. “Our focus is on delivering systems that are safe, compliant and proven in the environments our customers actually operate in.”

About Fuelfix & Tanks2Go

Fuelfix & Tanks2Go is a leading Australian provider of fuel systems, power infrastructure and hybrid energy solutions for the mining, construction, industrial and infrastructure sectors. With deep experience in complex and high-risk environments, Fuelfix supports customers in delivering reliable, compliant energy today while improving efficiency, resilience and emissions performance through integrated hybrid solutions.