TheUS Renewable Energy Testing Center (RETC) has released its "PhotovoltaicModule Index Report” (PVMI) for 2020. Having won a "High Achievers"award in 2019, LONGi has once again carried off the award for outstanding performancefollowing comprehensive evaluation of global photovoltaic modules by RETC.
LONGi’sperformance in three indicators of reliability, performance and qualityidentified it as one of only three companies to achieve the award. The company alsobecame the only module manufacturer to perform well in all 8 individual tests, underliningthe high reliability and excellent performance of its monocrystalline modules.
ThePVMI provides a high-level overview of relevant tests carried out by RETCwithin reliability, performance and quality indicators, followed by a samplingof test data to recognize high performers and showcase high achievement inmanufacturing.
Tocharacterize reliability, the report presents performance distribution databased on a series of tests, including DH2000,HF30,TC600,DML, UV and PID196h. For the performance category, it presents datacharacterizing module conversion efficiency, PVUSA Test Conditions (PTC)ratings*, Pvsyst simulation (PAN file) and LID. In regards to qualityindicators, the results of Thresher Test qualification protocols are listed, exceedingminimum requirements.
*PVUSA Test Conditions(PTC):An elevated celltemperature of 45°C, an ambient temperature of 22°C, and a wind speed of 1meter per second
*PTC rating is related to a module’s temperaturecoefficient of power, its nominal operating cell temperature (NOCT) andaperture area.
Beingawarded as overall “High Achiever” and demonstrating solid top performance onall 8 indicators are good testament to LONGi’s consistent philosophy of deliveringreliable products to customers. As the world’s leading solar technologycompany, LONGi focuses on product reliability, from design to production,providing customers with reliable and value-added photovoltaic modules. Moduledesign starts with theoretical simulation using relevant optical, electricaland mechanical models. Module power, efficiency, energy yield and reliabilitywill all be considered before design is finalized; For module BOM selection, thecompany has always maintained a highly cautious approach, ensuring long-termproduct reliability. In addition, LONGi uses Ga doping to control mono PERCmodule LID, and has also optimized the hydrogen passivation process to mitigateLeTID.
Figure 3: Fundamental ofLONGi products: comprehensive approach ensuring high reliability
Meanwhile,to ensure module reliability, LONGi goes beyond standard testing requirements,establishing a variety of differentiated testing methods based on the resultsof well-known research institutions and third-party experts. As for theproduction process, highly automated equipment not only improves efficiency,but also helps ensure production stability. A comprehensive quality controlsystem guarantees product excellence.
About LONGi
LONGileads the solar PV industry to new heights with its product innovations andoptimized power-cost ratio with breakthrough monocrystalline technologies. Thecompany supplies more than 30GW of high-efficiency solar wafers and modulesworldwide each year, about a quarter of global market demand. LONGi isrecognized as the world’s most valuable solar technology company with thehighest market value. Innovation and sustainable development are two of thecompany’s core values. Learn More:https://www.LONGi.com/,