Quinbrook Infrastructure Partners has locked in the technology stack for the next phase of its Supernode battery campus north of Brisbane, and the numbers put the project in a different class from ordinary four-hour storage additions. Stage 3 will add 260 MW / 1,216 MWh of battery energy storage beside the South Pine substation in Queensland. GE Vernova will provide power conversion, plant controls, system integration, and grid-connection support. CATL will supply its TENER S battery storage systems, after supplying EnerC Plus hardware for the first two stages. AI-generated image Supernode is being built as a large battery campus at a strategic point in Queensland's transmission network. Image generated for CurrentCells. 780 MW Planned first three stages 3,075 MWh Total storage capacity 4 hours Stage 3 duration A$1.2B Project financing across stages What Was Announced GE Vernova said on August 21 that Quinbrook selected the company for Supernode Stage 3. The award extends GE Vernova's role across all three announced stages of the project. Stages 1 and 2 are already in full operation, and Stage 3 has already achieved Generator Performance Standards acceptance, a grid-connection milestone for projects connecting to Australia's National Electricity Market. That technical milestone matters because Australia has become one of the toughest proving grounds for large battery projects. High renewable penetration, long transmission corridors, coal retirements, and increasingly strict connection studies have forced storage developers to solve grid behavior before projects can reach commercial operation. The Supernode campus is located at Brendale, north of Brisbane, beside the South Pine substation. CATL and Quinbrook have described the location as a strong grid node with roughly 4,000 MW of available connection capacity for phased expansion. That connection point is the asset. The battery containers, power conversion systems, and controls are being stacked around it. Why this matters Supernode is not only getting bigger. Stage 3 adds grid-forming capability, which can let batteries provide voltage, frequency, and system-strength support that grids once expected from spinning thermal generators. Grid-Forming Storage Moves From Pilot to Campus Scale The phrase grid-forming can sound abstract, but the operating problem is concrete. Traditional grid-following inverters rely on a stable voltage waveform already present on the network. Grid-forming controls can help establish and stabilize that waveform. As coal and gas units retire or run less often, the grid has fewer synchronous machines naturally providing inertia, fault current, and voltage support. GE Vernova says Supernode Stage 3 will be its first grid-forming battery project in Australia. Its scope covers the power conversion system, controls, integration work, and connection support. That places the value of the project partly in software and electrical engineering, not just battery cell supply. For Queensland, that difference is important. The state wants more renewable energy but still needs stable operation during solar ramps, evening peaks, network faults, and thermal plant outages. A large battery can charge and discharge energy. A grid-forming battery can also help the power system behave more like a stable machine while doing it. AI-generated image Grid-forming storage shifts attention from battery duration alone to controls, inverters, and connection studies. CATL Keeps the Cell Platform Consistent CATL remains the core battery storage system supplier for all three stages. Stages 1 and 2 use EnerC Plus systems, while Stage 3 is expected to use TENER S. CATL has said the earlier EnerC Plus design supports back-to-back installation, reducing the required site footprint by about 20 percent compared with the prior EnerC product. Land use is not a side issue at Supernode. The project sits on constrained industrial land near a high-value grid connection point. Higher-density container layouts can convert scarce acreage into more megawatt-hours, especially when developers want to keep adding phases around the same substation. CATL is also tied to the project after commissioning through lifecycle support. Its long-term service agreement covers condition monitoring, performance tracking, fault response, and preventive maintenance. That service layer is becoming more important as multi-gigawatt-hour battery campuses move from construction announcements into decades of dispatch, augmentation, warranty management, and market operation. The Supernode stack • Developer: Quinbrook Infrastructure Partners. • Grid technology: GE Vernova power conversion, controls, integration, and connection support. • Battery systems: CATL EnerC Plus for Stages 1 and 2, TENER S for Stage 3. • Market role: Energy shifting, frequency support, system strength, and contracted capacity. Finance Is Following Operating Proof Quinbrook closed A$469 million in debt financing for Stage 3 in August, taking total financing across the first three stages to about A$1.2 billion. That financing came after Stage 2 reached commercial operation, giving lenders evidence that the site can move from plan to operating asset. Contracting also reduces the merchant-risk problem. Origin Energy holds tolling agreements for the first two stages, while Queensland government-owned Stanwell has a 1,010 MWh offtake agreement tied to capacity across the campus. For a project this large, the bankability story depends on who controls dispatch rights, how revenue is shared, and how performance obligations are managed over time. The timing is useful for the wider market. Battery storage projects are getting larger, but larger does not automatically mean easier to finance. Connection risk, equipment availability, fire safety reviews, revenue uncertainty, and degradation assumptions all get harder at scale. Supernode shows one path through that problem: build in phases, operate early stages, lock in long-term counterparties, then finance the next block. AI-generated image As batteries scale, operations, warranties, and contract structure decide how much value the project can hold. Why Australia Keeps Producing Big Battery Signals Australia's National Electricity Market is a useful test bench for storage because the grid has a real need for fast flexibility. Solar output can be abundant during the day, evening demand still matters, and coal units are aging. Batteries can soak up midday energy, respond to frequency events, and reduce reliance on peakers during short supply windows. The country has also moved past the novelty stage. Large batteries such as Hornsdale, Victorian Big Battery, Waratah, Orana, Wooreen, and now Supernode have pushed the market from first demonstrations into repeat infrastructure procurement. The new question is not whether batteries can help the grid. It is how much grid responsibility they can take from conventional assets. Supernode Stage 3 answers that question in a practical way. It combines four-hour storage with grid-forming controls at a substation-centered campus. That makes the project relevant well beyond Queensland. Grid operators in the United States, Europe, India, and Chile are facing similar questions as renewable penetration rises and interconnection studies get more demanding. The Industry Read-Through For battery suppliers, Supernode reinforces CATL's role as a default utility-scale storage vendor even as governments push harder for domestic content and supply-chain diversity. The company is not only selling containers. It is selling long-term service, thermal design, site-density advantages, and product continuity across phased campuses. For power-electronics vendors, the message is just as clear. Batteries are becoming grid equipment. A storage supplier that cannot satisfy grid-forming requirements, connection standards, and advanced control needs may be screened out of the largest future projects, espec