Trina Solar launches 60-cell mono-PERC ‘DUOMAX Twin’ bifacial 300W module

Facebook
Twitter
LinkedIn
Reddit
Email
DUOMAX Twin generates power from both the front and back sides of the solar module and performs well even under weak light conditions. Image: Trina Solar

Trina Solar has launched its high-efficiency P-type mono-PERC (Passivated Emitter Rear Cell) bifacial module ‘DUOMAX Twin.’ Trina Solar supplied 20MW of 72-cell bifacial modules, with a power output ranging from 340-350W to the second largest project to use bifacial modules and is located in Golmud, China’s Qinghai province. The ground area was sandy with highly diffuse reflection. The modules have a 0~+5W positive power tolerance and have a 285-300W power range with 18% maximum conversion efficiency.

Problem

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Conventional mono-facial Al-BSF solar cells are reaching efficiency limitations and PERC cells provide both higher efficiencies and can be cost effectively converted to bifacial for dual glass PV modules, providing between a 10% and 30% efficiency gain by harnessing defused light on the rear side of the cell, resulting higher kWh produced electricity generation and lower levelized cost of electricity (LCOE). 

Solution

DUOMAX Twin generates power from both the front and back sides of the solar module and performs well even under weak light conditions. The front side receives direct sunlight while the back side receives reflected and scattered light. Compared with traditional single-sided modules, the DUOMAX Twin can deliver as much as 25% additional energy yield. The bifacial enables increased energy density and higher output, while maintaining development costs at a comparable level as for standard modules. By maximizing energy generation, the bifacial module can reduce the LCOE. Since bifacial modules absorb solar radiation from both sides, they allow a variety of tilt and installation options and are ideal for elevated ground, rooftop, desert and snowy area installations or on-water applications. The dual-glass design provides extreme durability even in the harshest environments.

Applications

Bifacial cells used with dual glass modules can be used in PV projects that have good albedo ground and surrounding reflection for the rear side cell. These include ground mounted utility-scale, flat roof commercial/industrial roofs, car ports, BIPV and floating solar applications. Also applicable to greenhouse and agricultural projects and special applications such as sound barriers on expressways.

Platform

The DUOMAX Twin uses P-type monocrystalline PERC (156.75 × 156.75 mm) cells in a 60 cell spaced format to improve dispersed light capture on the rear side of the cell. Front glass is 2.5mm thick (0.10 inches), high transmission, AR (Anti-reflective) coated and heat strengthened. Rear glass is 2.5mm thick (0.10 inches), high transmission, low iron and heat strengthened. A unique J-box design and installation method is used to avoid shading on the back side of the module. The modules have a 0~+5W positive power tolerance and have a 285-300W power range with 18% maximum conversion efficiency. The DUOMAX Twin has a 10 year product workmanship warranty and a 30 year linear power warranty.

Availability

April 2017 onwards.

Read Next

October 9, 2025
Singapore-based Sembcorp Industries has agreed to acquire ReNew’s 300MW solar power unit in India for around US$246 million.
October 9, 2025
The retroactive collection of duties on historical solar imports to the US has been temporarily paused pending the outcome of an appeal.
October 8, 2025
US solar module prices jumped in Q3 2025 as developers scrambled to meet the 2 September 2025 safe harbour deadline for Investment Tax Credit (ITC) qualification, according to supply chain platform Anza.
October 8, 2025
University of Sydney scientists have created the largest and most efficient triple-junction perovskite-perovskite-silicon solar cell on record.
October 8, 2025
Saatvik Green Energy has secured new solar PV module orders worth more than INR7 billion (US$84 million), to be delivered in this financial year.
October 7, 2025
Econergy will acquire 100% stake in the 155MW Ratesti solar project in Romania, further expanding its European renewable energy portfolio.

Subscribe to Newsletter

Upcoming Events

Solar Media Events
October 21, 2025
New York, USA
Solar Media Events
November 25, 2025
Warsaw, Poland
Solar Media Events
December 2, 2025
Málaga, Spain
Solar Media Events
February 3, 2026
London, UK