600W+ Modules Using 210mm Diameter Solar Cells Are Leading The Industry Forward – In Conversation With Dr. Zhang Yingbin, Head Of Product Strategy And Marketing, Trina Solar

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Trina Solar recently issued a series of test results on the mechanical reliability of Trina Solar 670W Vertex modules. There were six tests:
• a static mechanical load test,
• non-uniform snow-load test,
• extreme low-temperature mechanical load test,
• hail test,
• extreme dynamic mechanical load (DML) test and
• a wind tunnel test to test the modules under extreme wind conditions.

Dr. Zhang Yingbin, head of product strategy and marketing at Trina Solar, says these advanced tests aimed to verify that ultra-high-power modules can maintain their outstanding performance even when subject to extreme weather.

Q: Why did Trina Solar choose to issue a white paper on these test results?

Zhang: We see two major trends in PV application. One is globalization. More than 180
countries and regions now have PV. The other is the diversification of PV application
scenarios, such as agriculture, fisheries, water, etc. These two trends place a higher
demand on module performance, especially with regards to reliability. PV modules
face enormous challenges because of extreme weather such as wind, snowstorms,
cold and hail. A comprehensive range of tests was conducted covering all these
extreme conditions. The 670W modules demonstrated they can withstand extreme conditions and achieve high reliability and stable capability of power production over the whole life cycle. We are sharing the research results across the industry so there can be more innovation and breakthroughs.

Q: How did Trina Solar optimize Vertex 670W design to withstand extreme weather?

Zhang: Based on more than 24 years of PV module R&D technology and manufacturing
experience, we have made many improvements including optimizing design, making
frame walls thicker, enlarged cavities and improved the selection of materials and
matching designs. All of this helps to achieve ultra-high structural robustness. If our
customers choose to build solar installations in extreme geographic and climatic
conditions, we offer customized products and installation design services including
total solutions.

Q: Does optimizing products mean costs are likely to greatly rise?

Zhang: It makes no sense just cutting costs while ignoring the long-term reliability of
products. But optimizing and improving product reliability by no means implies greatly
increasing costs. It has been calculated that cost increases will be minimal, taking into
account the real value that 670W modules deliver to customers in the full life cycle of
PV power plants.

Q: Will the core data related to Trina Solar modules, that use 210mm diameter solar cells, be made available to members of the 600W+ Open Innovation Ecological Alliance?

Zhang: Yes. We are one of the founders of this valuable eco-system that includes many
industry players that are committed to the development of solar modules that use 210mm diameter solar cells. The publication of Trina Solar’s 210 Vertex modules system
‘white paper’ means that it becomes an open source for other companies. The core
data including product design, layout, the position of installation holes, packaging
solution, transportation, hot spot mechanism and the working temperature is all shared
among members. In addition, the production capacity plans of upstream and
downstream companies, estimates of shipment and order data are also shared. The
core concept of openness, innovation and ecology of the Alliance accelerates the technological advances and industrialization of 600W+, which has already well exceeded our expectations.

Q: Will 210 modules become mainstream in the market?

Zhang: According to the latest report published by PVinfolink, the 210 modules
production capacity will reach 147GW this year and 234GW next year. High power
modules will take more than 70% share of overall global modules production capacity.
And the pace of growth is likely to exceed our forecasts.

Q: Have there been project cases of 210 in both domestic and international markets?

Zhang: Yes, we recently published case studies on large projects that used modules
based on 210mm diameter solar cells. For example, the 400MW agricultural photovoltaic solar plant in Nangong, Hebei province. Average three-year equivalent power generation hours have been raised 18% with the integrated supply of the Vertex modules plus TrinaTracker solution, compared with traditional solutions. The customer involved in the 112MW project in Dachaidan, Qinghai province, chose Trina Solar 670W series ultra-high-power modules. The project is in a desert so the customer only wanted PV modules with high capacity and high reliability to withstand extreme weather. Overseas there are also many 210 projects. In early August, Trina Solar becomes the only modules provider for an 850MW large project in Brazil, all fitted with 600W+ series modules that have already been shipped.

Q: How would you sum up all of this?

Zhang: On the path of leading the PV industry towards 600W+ modules, Trina Solar is
not taking action by itself. Rather, it is the joint efforts and business synergy of the
whole industry eco-system from R&D, manufacturing to application. We hope that
through innovation we can continue to focus on creating value for our customers and
our partners while accelerating the sustainable development of the PV industry
through products that offer the best performance and at the lowest cost.

About Trina Solar
Founded in 1997, Trina Solar is the world-leading PV and smart energy total solutions
provider. The company engages in PV products R&D, manufacture and sales; PV
projects development, EPC, O&M; smart micro-grid and multi-energy complementary
systems development and sales, as well as energy cloud-platform operation. In 2018,
Trina Solar launched its Energy IoT brand, established the Trina Energy IoT Industrial
Development Alliance together with leading enterprises and research institutes in
China and around the world, and founded the New Energy IoT Industrial Innovation
Center. With these actions, Trina Solar is committed to working with its partners to
build the energy IoT ecosystem and develop an innovation platform to explore New
Energy IoT, as it strives to be a leader in global intelligent energy. In June 2020, Trina
Solar listed on the STAR Market of Shanghai Stock Exchange.

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