Bitterfeld-Wolfen (Germany), 24. Juli 2012 – Q.CELLS is the first photovoltaics company whose solar modules have undergone the fourfold PID test laid out by the well-known TÜV Rheinland testing institute. Our products showed excellent results. Conventional PID (potential-induced degradation) tests only take one week. During the testing period a negative voltage is applied to modules at room temperature, and modules whose performance declines by less than five percent are deemed to have passed. The tests under the agreed extended conditions lasted for four weeks, meaning they are far more stringent than standard. Q.CELLS submitted several modules for testing in line with these new conditions. In the end, TÜV Rheinland announced that all examined Q.CELLS module passed the test. According to the assessment parameters used by TÜV Rheinland, none of the solar modules displayed a decline in performance by accuracy of measurement, which proves them as PID resistant.
This excellent result is yet another success underlining Q.CELLS’ high product quality. The Fraunhofer CSP Institute had carried out a fast-track PID test on Q.CELLS’ modules in June 2012, which all of them passed as well. Other manufacturers’ modules were affected by PID during that test, and some of them saw a slump in performance of over 90%.
“The series of tests conducted by TÜV Rheinland and Fraunhofer CSP underscores just how important PID resistance is for long-life products of outstanding quality,” says Karl-Heinz Küsters, Head of Technology at Q.CELLS. “It is great for us to see that our customers are becoming more aware of the important role PID plays when determining product quality – since PID protection not only ensures a high power output, but also improves the safety of solar modules.”
“We are delighted for Q.CELLS that not just one but several of the company’s solar modules passed our four-week test with impeccable results,” says Jörg Althaus, Head of Solar Energy at TÜV Rheinland. “PID is a problem that people should take very seriously. If a manufacturer fails to implement a suitable solution, it can lead to a substantial decrease in solar products’ output.”
Background information: PID (potential induced degradation):
One of the most serious negative influences solar modules have to overcome to maintain high-level performance is what is known in the industry as PID, potential induced degradation. It can cause a decline in a solar module’s output if there is an excessive negative voltage between the solar cell and the ground. The best way to tackle the problem is to integrate PID resistant technology already into the solar cell. This is where Q.CELLS has a clear competitive advantage.
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Lawyer Henning Schorisch, insolvency administrator of Q-Cells SE Management board: Dr. Nedim Cen (CEO, CFO), Dr. Andreas v. Zitzewitz (COO, CSO) Chairman of the supervisory board: Prof. Dr. h.c. Karlheinz Hornung