Brunstock Australia appoints Colterlec as exclusive distributor of Symm 261 battery energy storage system in the Australia and New Zealand C&I markets
261 kWh liquid-cooled BESS now available through Colterlec for commercial and industrial sites, with capacity scalable to 2.61 MWh
MELBOURNE, 26 October 2026: At All Energy Australia 2026 Brunstock Australia and Colterlec announce their distribution partnership for the Brunstock Symm 261 BESS. This unique C&I battery energy storage system (BESS) is new to Australia and New Zealand offering a sleek industrial design and local technical support. Helmut Rebstock, CEO of Brunstock AG (Switzerland), travelled to the event to celebrate the signing of the partnership agreement with Colterlec.
Under a three-year distribution agreement, Colterlec will supply the Symm 261 to commercial and industrial (C&I) customers throughout the region, covering sectors from manufacturing and logistics to retail, healthcare and agriculture. The arrangement gives C&I businesses a single point of contact for procurement, commissioning and ongoing support.
About the Symm 261
The Symm 261 is Brunstock’s purpose-built C&I BESS, delivering 125 kW of power and 261 kWh of energy storage per module in a liquid-cooled, lithium iron phosphate (LFP) platform. The system has been engineered for sites where reliability, safety and flexibility are non-negotiable.
A defining feature of the Symm 261 is its modular scalability. A single module delivers 261 kWh; up to ten modules can be combined on the same platform to reach 1.25 MW and 2.61 MWh—without the need for a new hardware ecosystem or system redesign. This allows businesses to right-size their initial installation and expand storage capacity in line with operational growth.
With an optional included PCS applications include peak demand charge reduction, on-site renewable energy capture and dispatch, backup power for critical operations, and grid services. The liquid-cooled LFP chemistry delivers a strong thermal management profile, contributing to long cycle life and reduced maintenance overhead.
Quotes
‘We are very pleased to partner with Colterlec to launch our exciting new battery energy storage solution. Colterlec combines broad geographical coverage with strong engineering and integration capabilities, allowing it to effectively serve both the microgrid and installer markets across Australia and New Zealand. As the C&I BESS segment continues to grow, we look forward to working together to deliver cutting-edge energy solutions to the market.’
—Chris Ball, Brunstock global executive
‘Colterlec has been serving the commercial and industrial electrical sector for decades. We understand how our customers consume energy, and we understand the complexity of integrating new technology into live sites. The Symm 261 is a flexible, modular system, tested and backed by Brunstock’s global engineering capability. We’re pleased to bring it to the Australian and New Zealand C&I market exclusively.’
—Rod Henderson, Colterlec CEO
Availability
The Symm 261 is available to order now through Colterlec and a demonstration unit is on their stand at All Energy 2026. In 2027 Colterlec will maintain a standing stock of demonstration and deployment-ready units at strategic locations across Australia and NZ to support customer evaluations, site assessments and support order fulfilment. Commercial and industrial users and site installers should direct enquiries for Symm 261 to Colterlec. Brunstock Australia Pty Ltd remains the contact for utilities and generation retailers, who have different requirements.
About Brunstock Australia
Brunstock Australia (ACN 681 305 206), is a wholly owned Australian subsidiary of Brunstock AG, Switzerland. Based in Loganholme, Queensland, Brunstock Australia is the local face of the Brunstock brand. Brunstock has developed a portfolio of power products and solutions for the global transmission and distribution market, supported by a network of manufacturing partners. This includes BESS, power transformers, switchgear and the substation enclosures to house them in. Brunstock Australia manages all aspects of product localisation, technical support, compliance and customer engagement for the Australian and New Zealand markets.
About Colterlec
Colterlec Pty Ltd (ACN 073 980 99) is a specialist electrical distributor and solutions provider serving the commercial and industrial sector across Australia and New Zealand. With deep expertise in technical, engineering, sales, marketing and distribution, Colterlec and its affiliates work closely with end customers to identify the right energy solutions for their specific operational requirements. As the exclusive distributor of the Brunstock Symm 261, Colterlec provides procurement, commissioning support and after-sales service for C&I BESS deployments throughout the region.
Media Contacts
Brunstock Australia | Amanda Greenslade | web form
Colterlec Pty Ltd | Connie Kavanagh | web form