The Chinese manufacturer has launched an “Australia-specific” variant of its Vertex S+ modules with a power of 515 W and a maximum efficiency of 24.65%. The lower voltage design reportedly allows for more flexible string sizing, allowing installers to optimize system layouts for a range of inverter configurations.
Trina Solar has unveiled a new variant of its Vertex S+ module series, designed to deliver higher output within standard rooftop restrictions and tailored for the Australian residential, commercial and industrial (C&I) market.
The company said the Australia-specific module supports systems up to 100 kW under the Small-scale Renewable Energy Scheme (SRES), with higher wattage and efficiency per module allowing installers to optimize system size and maximize Small-scale Technology Certificate (STC) efficiency within a limited roof area.
The monofacial NEG10R.28Z module provides an output power of up to 515 W with a maximum conversion efficiency of 24.65%, within a standard module footprint of 1,842 mm x 1,134 mm x 30 mm. Based on Trina’s n-type i-TOPCon cell architecture, the module incorporates zero-busbar and zero-gap technologies to improve efficiency and reduce electrical losses.
Trina said the higher power density allows installers to achieve target system capabilities with fewer modules, increasing system capacity without increasing the footprint. This can reduce system balance requirements (SOS) and improve levelized electricity costs (LCOE).
The module has an open-circuit voltage of 38.3 V and a short-circuit current of 12.85 A. According to the company, the lower voltage design allows for more flexible string sizes for a range of inverter configurations, supporting optimized system layouts where roof design or electrical limits apply.
The module is designed for Australian conditions, with a temperature coefficient of -0.26%/C to support high-temperature performance, and a double-glazed structure to improve durability. It can withstand mechanical loads of up to 5,400 Pa (snow) and 4,000 Pa (wind).
The product comes with a 25-year product warranty and a 30-year performance warranty. End-of-life output is guaranteed at no less than 88.85% of rated power, with degradation limited to 1% in the first year.
Edison Zhou, Trina Solar’s head of operations for Australia and Asia Pacific, said the product reflects a shift towards system optimization in the Australian rooftop market.
He said the 510–515 W range represents a practical sweet spot for rooftop systems as installers increasingly look for higher wattage and higher efficiency modules within standard sizes, especially where roof size and configuration limit system design.
The Vertex S+ 515W module is available for pre-order and is expected to launch in Australia in early Q3 2026, subject to final certification and listing requirements.
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