Successful Installation of 4-MWh BESS

Gelion (AIM: GELN), the global energy storage innovator, announces the successful installation of the 4-megawatt hour (MWh) battery energy storage systems (BESS) for Group Energy Pty Ltd (a Borg Group company). Further to the announcement made in April 2025, the BESSs have now progressed to advanced commissioning stage, in preparation for live operations.

Highlights

· Successful installation and advanced commissioning stage of two 2MWh BESSs at Borg Group sites in Somersby and Charmhaven near Sydney, Australia. · 92.5% revenue, approximately £900k recognised in FY2025 [1] , with the remainder £65k to be recognised in July 2025 (FY2026). · Gelion and Group Energy have commenced planning and business case development for additional larger BESS on Borg's sites. · Gelion is growing its BESS pipeline across multiple sectors, including Industrial, Consumer business, Education and Utility companies. L-R: Patrick Sandor (WHS Coordinator, Porta Products (Borg Group)), Goran Klingberg (Applications Engineer, Gelion), Tom Hagan (CEO, Crossmuller), Nick Batt (General Manager Engineering & Operations, Gelion), John Borg (Managing Director, Borg Group of Companies ("Borg Group")), Stuart Rayner (Commercial Director, Gelion), Andrew Cheah (Head of Group Energy), Katrina Boyd (Sustainability Manager, Borg Group).

Gelion CEO, John Wood, commented:

"It's fantastic to see Gelion's BESS in the final stages of commissioning at Borg's sites. Our teams have worked very closely together to rapidly progress this important project. It is also exciting for Gelion to be working closely with Group Energy to define their next potential scaled up BESS for the Group while in parallel, our Integration team are growing a healthy pipeline of BESS opportunities in the Australian market."

Borg Group Managing Director, John Borg, added:

"Gelion has demonstrated strong integration expertise and capability during the project. Group Energy is looking forward to operating the BESS units which will start delivering the projected electricity cost and sustainability benefits in the near term. As we review and assess the BESS's operational performance and commercial returns, we will then shore up our plans for additional BESS units to be deployed across our business."

Gelion's 1MW/2MWh BESS, 20-foot containerised all-in-one system at Somersby, NSW Australia.

Borg Group BESS Implementations

The BESS are in the final stages of commissioning and are each rated at 1 MW / 2 MWh. By charging at times of high solar production and discharging when demand is high, these batteries will save significant energy costs to Borg Group. The batteries will also reduce the peak demand from the grid, further reducing Borg Group's energy costs. The batteries will provide additional benefits to help stabilise the broader energy network, such as frequency response services. This includes Very Fast Frequency Control Ancillary Services (VF FCAS).

Integration Solutions

Gelion leverages its significant integration and BMS capability to deliver bespoke BESS for Australian Commercial and Industrial customers. These BESS are currently based on lithium-ion technology and will also include Gelion's next-generation batteries as these become available. Gelion will deploy BESS with our proprietary cloud-based battery monitoring system, which will provide real-time diagnostics and alerts to maximise performance and return on investment for our customers.

About Group Energy

Group Energy is part of the Borg Group, a proudly Australian-owned business that includes companies such as Porta Products (formerly Australian Panels), polytec, Crossmuller and reDirect Recycling.

Established to support Borg Group's energy, carbon and sustainability initiatives, Group Energy plays a key role in driving renewable energy adoption, emissions reduction and energy resilience. We own and operate 16 MW of rooftop solar PV, generate environmental certificates such as Large-Scale Renewable Energy Certificates (LGCs) and Australian Carbon Credit Units (ACCUs), and lead sustainability and energy efficiency activities.

As a registered market participant with the Australian Energy Market Operator (AEMO), we will operate the BESS to optimise revenue through spot market arbitrage and frequency control ancillary services (FCAS), whilst maximising the use of on-site solar generation.

[1] Gelion management's assessment and subject to audit review of revenue recognition across FY25 and FY26.