UL Conducts Bankability Study on Trina Solar’s Vertex Series Modules, Showing Superior Performance in Key Aspects
2022.08.26

In mid-August, the world’s leading independent advisory, testing, inspection, and certification organization, UL (Underwriters Laboratories), published a bankability study report on Trina Solar’s Vertex series modules. The study showed that twelve Vertex module models have excellent performance in reliability and compatibility, deliver lower LCOE, and that Trina manufactures the modules using a high-standard quality management system.

In all dimensions of the bankability study, UL reviewed Trina Solar’s products based on test results, reports, and certifications from accredited third-party test laboratories. Based on a strict examination of product value and a comprehensive understanding of the entire industry and global technology resources, international investors and solar power plant owners widely recognize the analysis’ authoritative technical support for product financing and operation. 

 

Superior performance in reliability tests

In reviewing the reliability of Trina Solar’s Vertex series modules, UL reviewed the key specifications of the products, as well as third-party certifications and test reports from accredited laboratories such as TÜV, PVEL, RETC, and CTC.

The latest study inspected:

  • junction box

  • mechanical reliability

  • Encapsulation

  • frame and ARC coating

  • reliability

  • transportation

  • delivery, and

  • module installation 

 

UL concluded that the modules reviewed complied with normal safety standards and offered superior performance.

Outstanding compatibility with major inverters and trackers

When UL investigated the compatibility of inverters in the market, it found that the Vertex Series PV modules are compatible with both utility-scale inverters and string inverters. Vertex Series PV modules are compatible with utility-scale inverters in terms of the short circuit current of the modules by selecting the correct configurations to match the MPPT specifications of high-current inverters, providing flexibility to meet project requirements. 

Due to high-power modules becoming mainstream modules, string inverter manufacturers have upgraded their products. Each MPPT input can take two strings with a total input current at 45A, and Trina’s Vertex Series module’s operating current at approximately 17A is compatible with the common string inverter manufacturers. 

Developers, EPCs, operators, and owners increasingly deploy solar in utility-scale PV projects. Trina Solar’s bifacial dual-glass modules effectively increase system energy yield by 5% to 30% when using the Vertex series modules with trackers.

 

LCOE significantly reduced by 4.1%

UL reviewed the LCOE reports by many third parties, including Black & Veatch, DNV, Enertis, and Fraunhofer ISE. UL’s assessment found that Vertex modules deliver lower CAPEX and LCOE than solar plants using generic module types in the same configuration. For instance, compared with the 182-540W reference module, the Trina Solar Vertex 670W series module can reduce LCOE by 4.1% and BOS costs by up to 6%.

 

Intelligent QC process to ensure manufacturing reliability and continuity

During a March visit to Trina Solar’s Yancheng factory, UL reviewed the company’s quality management system and quality control plan. The quality-control-process flow chart presented an overview of the entire process, demonstrating standardization, advancement, and intelligence. UL rated the overall quality control regime favorably.

Trina Solar uses a complete quality control system that includes data collection, analysis, and risk warnings. The sophisticated system covers the entire process of data from customer order generation to material, performance, shipment, and after-sales quality feedback based on a cloud database.

During the factory visit, UL noted that most key manufacturing processes relied on minimal human interference and were fully automated, such as high-speed multi-busbar soldering, PV cell layout, lamination, junction box installation, inspection, and packaging, to name a few. Trina even conducts visual inspections by artificial intelligence video to minimize human error. UL viewed the entire automation of the manufacturing process positively in terms of quality management.

 

A promising future ahead

In addition to UL’s bankability study report, Trina Solar has also been ranked a Top Performer in the 2022 PV reliability scorecard by PVEL. Bloomberg NEF has given it a 100% bankability score in each of the past six years, and the PV ModuleTech Bankability report published by PV-Tech has given it an AAA ranking in 2022.

Trina Solar has delivered more than 100 GW of solar modules worldwide to April and was ranked the second-largest module supplier in 2021 and the first quarter of 2022. A recent Trina Solar financial report forecasts the company’s cell production capacity to reach 50GW+ and its module capacity 65GW+ this year. The Yancheng manufacturing base delivers 17GW of modules and 19GW of solar cells a year.

The UL report also mentioned that in terms of financial health, Trina was strong.  

Regarding product value, technological innovation, and financial performance, Trina Solar has obtained wide technical and brand recognition from renowned independent institutes worldwide, demonstrating the PV market's strong confidence in Trina Solar.  ​