Quality

Leading experts from quality assurance and balance-of-system manufacturing were joined by a trio of CEOs at pv magazine Week Europe for a revealing discussion on building bankable projects. From glass breakage and soldering errors to significant variations in EPC quality, panelists found detailed auditing, a commitment to processes and an active approach to fault prevention are key to solar project quality in Europe and beyond.

Performance loss from ultraviolet (UV) light has become a concern for new PV cells, though earlier lab tests may have overstated the issue. Paul Gebhardt, photovoltaic module reliability scientist at Fraunhofer Institute for Solar Energy Systems (ISE), outlines a mechanism that may have distorted earlier results.

Solar modules are getting bigger, thinner, and more powerful. But from Texas to Thailand, the same problem is appearing: broken glass. Not from hail or mishandling, but from cracks that spider from frame edges, splinter near clamps, and web across modules. In cases seen by Jörg Althaus, director of engineering and quality assurance at Clean Energy Associates (CEA), it starts with a few panels – then dozens, hundreds, even thousands.

The Durable Module Materials consortium (DuraMAT) announced in its latest annual report the availability of new PV forecasting tools, and new research results towards the goal of more reliable PV modules.

This week sees new technoeconomic analysis published on different aspects/materials for heterojunction: Important to consider as Europe in particular looks to be betting big on this technology for its manufacturing comeback. And a new report from NREL in the United States examines progress in degradation and durability to increase module lifetimes.

German standards body TÜV Rheinland is introducing a new testing and certification program for pv modules. The program incorporates component specific tests and ongoing, random testing of running production lines. Hanwha Q Cells assisted in the development of the program, and this week announced it is the first manufacturer to receive the new Quality Control PV Certification.

The COVID-19 pandemic featured prominently at this week’s inaugural pv magazine Virtual Roundtables Europe, which took place this past Tuesday and Wednesday. Not only did the pandemic lead to the virtualization of pv magazine’s established June Roundtables, but it was a big topic in the final session on Wednesday dealing with markets and specifically the further development of Power Purchase Agreements (PPAs) in Europe.

The National Solar Energy Federation of India (NSEFI) is continuing to step up its efforts to ensure the quality of large scale solar projects. The body is now looking for stakeholder input into its new best practice guidelines for PV power plant projects, as a part of its ongoing Quality Taskforce initiative.

In the run-up to pv magazine’s quality roundtable at Intersolar Europe, we look at a case where a production error resulted in cold solder joints in 5% of the solar modules across a 50 MW project portfolio. We consider how to come to an agreement with a manufacturer to replace modules in such a situation and how such a solution compares with a production audit before installation.

In preparation for the next pv magazine webinar “New approach for bifacial modules and yield expectations” on Monday 29 April, 2pm – 3pm (CEST), Andrea Viaro, head of technical service Europe, JinkoSolar and Lucie Garreau-iles, technical manager, EMEA, DuPont, in the following answer the questions by pv magazine on why create an alternative to the bifacial glass-glass-modules