In late July, global investment giant Quinbrook Infrastructure Partners made dual announcements about its massive Supernode battery, a planned 780 MW/3,074 MWh campus.
The first was that the second of three stages had reached commercial operation in Southeast Queensland, with 250 MW/1,040 MWh online and operating, which brought the total capacity of the energy storage facility to 520 MW/1,858 MWh.
It also announced that AUD 469 million (USD 327 million) debt financing had been secured for the 260 MW/1,216 MWh third stage, with the project backed by a 15-year offtake agreement with Queensland government-owned electricity generator Stanwell Corporation.
Now, weeks later, Quinbrook’s technology partner and battery giant CATL has announced further details, saying it will supply Tener S systems for Stage 3 from its Tener series. CATL provided its EnerC Plus systems for Stages 1 and 2, all under a Long-Term Service Agreement (LTSA).
Tener S is CATL’s newer BESS solution, as part of its Tener series.
Tan Libin, CCO and co-president of sales and marketing at CATL, said “Energy storage is evolving from a standalone technology deployment into a strategic energy asset. The next stage of industry development will depend not only on technological advancement, but also on the ability to create long-term value through collaboration, innovation and scalable deployment. At CATL, we are committed to working with partners to unlock the full potential of energy storage assets and support the transition toward a more flexible and resilient energy system.”
ESS News has contacted CATL for further confirmed information or a datasheet for the Tener S. It was first mentioned in regard to a supply to Grenergy in Spain earlier in 2026, and recent social media updates suggest each container hosts 6.017 MWh.
EnerQB BESS mentioned, but not selected?
Despite the use of the Tener S solution, CATL still mentioned, without update, its EnerQB BESS project, a specific eight-hour battery storage solution in pilot testing with Quinbrook, which was, at one time, being ‘considered for future stages’ of the Supernode development.
When discussing the EnerQB BESS solution, Quinbrook’s CEO in Australia, Brian Restall, said the EnerQB BESS was much more energy-dense than existing technologies, adding that the advance is the result of design enhancements, even touting efficiency improvements, making mention of an evolution in parasitic load management which helped reduce temperatures, which may refer to cell balancing and/or auxiliary systems such as HVAC, pumps, controls, fans and other equipment.
Battery cells can be balanced through passive or active cell-balancing systems, each requiring a different hardware approach. Passive balancing uses resistors to dissipate excess energy from higher-charged cells as heat. This creates an additional thermal load that must be managed within the battery system, whereas active balancing transfers energy between cells and can reduce energy losses and heat generation.
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