Press Release – Berlin 14/05/2014

PI-Berlin Provides Certified Protection Against PID

The accredited test laboratory for solar modules Photovoltaik-Institut Berlin AG (PI-Berlin) announces ‘PID Block’ – a new programme for the confirmation of superior PID-suppressing properties of encapsulation materials. Hereby, the materials undergo insightful and specifically designed test sequences developed by PI-Berlin. These tests also provide information on the extent to which new materials in the PV module compound may even prevent the occurrence of PID, regardless of other module components or external influence factors.

“Potential Induced Degradation (PID) in solar modules is an increasingly observed field defect, which can drastically reduce the electrical energy yield of PV modules”, explains Dr. Juliane Berghold. “Over time, the performance of affected modules may drop by a double-digit percent range. Sometimes, PID may even lead to a total failure of the modules.”

PI-Berlin tests on the level of material issues and certifies encapsulation materials that are able to effectively suppress PID depending on the system configuration – regardless of the solar cells used, the installation site of the modules and the voltage stress exposed to them. Suitable encapsulation materials are able to compensate for the other factors, and, therefore, effectively prevent PID or at least reduce it significantly. To receive certification, the material must complete a two-part test programme developed by PI-Berlin on the basis of field experience and in-house R&D activities. These include both PID tests at the module level using PID-susceptible cells and further analysis of the encapsulation technology at the material level.

Demanding criteria for the volume resistivity of the materials must be met at different environments and after aging tests.

The PI-Berlin certificate will only be awarded if a material has passed all the tests and the manufacturer is able to demonstrate certified quality management. The Dow Chemical Company is the first manufacturer of PV encapsulant films to achieve certification for two encapsulation materials from their ENLIGHT™ Polyolefin Films product portfolio.


White Paper - Bifacial PV Technology

This paper provides a comprehensive introduction into all aspects of bifacial PV technology with a special focus on risks industry buyers and investors should pay attention to. Read more

White Paper   Bifacial PV Technology   PI Berlin

Job Ad

As part of an internship in the PV System Services business unit, the opportunity will be granted to gain insight into the PI Berlin AG Power Plant department. The tasks range from the review of PV Power Plant planning through yield simulation to the on-site assessment of PV systems in various regions worldwide.

Internship + Thesis or Student Research Project (m/f/d)

Job Ad

We are looking for a new member of our technical services team at our office in Bilbao. PI Berlin is an established expert technical advisor for PV projects and to better serve the Iberian market, we have established a new subsidiary in Spain.

Project Engineer (m/f/d) in Bilbao, Spain

New PI Berlin Office in Spain

We have established a new PI Berlin subsidiary in Bilbao, Spain. Our new office will provide a dedicated focus on delivering our services in the re-emerging and growing PV market on the Iberian Peninsula.

Press Release 27.03.2019

SolarBuyer rebrands as PI - US firm acquired by PI Berlin integrates with parent company

The former SolarBuyer company in the US acquired by PI Berlin in 2018 has officially renamed itself as PI Berlin North America, or ‘PI’ for short. The rebranding brings SolarBuyer fully into the global family of PI companies alongside two existing subsidiaries in China.

Read more