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The Overall PV Module Test Results Improved In 2018, But There Were Still Obvious Faults.
- May 30, 2018 -

DNV GL, the world's largest independent energy expert and certification body, released its fourth annual report on its annual photovoltaic component reliability scorecard, the most comprehensive and open comparison of the results of the reliability test for photovoltaic components.

This year's report found that the reliability and durability of components submitted to DNV GL for testing the reliability score card of the 2018 PV component is usually improved in a number of test categories. However, in one of the test categories, Hygrothermal symptoms decreased. Since 22% of the manufacturers have at least one failure in the overall test, the buyer must recognize a specific list of materials (BOM), which identifies the model as "the best performance" and is critical when making a purchase decision.

It is estimated that by 2018, the annual global solar installations will be expected to exceed 100 gigawatts. The growth of this solar device is partly driven by new technologies, which can bring higher profits and reduce the cost of photovoltaic products. With new components in the solar market, rigorous testing has proved the reliability and durability of the latest sophisticated technology.

The annual PV module reliability scorecard reported the results of DNV GL's PV module certification plan (PQP). The PQP and scorecard is a voluntary plan that enables PV component manufacturers to show the reliability and durability of their products to the global industry and to provide independent and consistent component reliability data to the PV equipment buyer and the power station investors.

For six years, the DNV GL has tested more than 300 BOM for more than 50 manufacturers, including nine of the world's top ten module manufacturers and more than 70% of the latest Pombo new energy finance "first level" manufacturers.

The reliability scorecard of PV module summarizes the PQP test results in the past 18 months. The main findings of the reliability scorecard for PV modules in 2018 include:

Compared with 2017, the test results were improved

9% of the submitted BoM failed to pass one or more test standards.

12% of the model types did not pass one or more test criteria.

According to the test standard, 22% of manufacturers failed at least once.

Failure rate has nothing to do with the location of the factory or the size of the manufacturer.

"DNV GL PV module reliability scorecard is a valuable tool for Pacifico Energy to be used in our overall procurement strategy. For Pacifico, when a PV component supplier performs a product certification program test, Pacifico can benchmark our vendor base performance to ensure that our project uses reliable and durable products and performance as expected, which is very helpful for us "Pacifico Energy KK. Nate Franklin, the president and chief executive, said. Pacifico Energy KK is a Japanese utility scale investor, photovoltaic power station developer and operator.

A new function of this year's scorecard is the introduction of the "historical scorecard". This suggests that manufacturers have been top in the latest four rating card versions, highlighting those newly entered manufacturers, newly added PQP and scorecards, or the newly named "best performance awards" in 2018.

"We know that the manufacturers involved in the product certification program (PQP) put the quality and reliability of the product first, and the robust assessment of the sub plan is helping the manufacturers to take a new step. Our test results show that no matter who the manufacturer is, buyers need to understand the specific material list (BOM) specification for PV module purchase. Buyers should also realize that not all manufacturers have tested the quality and reliability of their modules. Buying untested modules is a big risk and may have a significant impact on their projects, "said DNV GL, energy chief executive, Ditlev Engel.