How PID resistant are ‘PID free’ solar modules?

PID (Potential Induced Degradation) is a phenomenon that is causing degradation in solar cells due to a negative voltage on the solar cells with respect to the frame of the module. In PV systems, about half of the solar modules operate under such condition in a configuration with modern high voltage inverters.  This negative voltage […]

Extensive tests map long-term effect of PID

PID verloop

Scientists in Germany have developed a “heavy duty” test to provide insight into the long term effects of Potential Induced Degradation in PV modules. The tests go well beyond those established by IEC standards and seek to guide manufacturers and investors on the best choice of materials – encapsulants in particular – when it comes […]

How to detect PID on your PV plant?

Drone inspectieCharacteristic for PV plants is that they will underperform as a result of Potential Induced Degradation or PID. This phenomenon occurs on all types of PV plants, often without the owner of the installation being aware of it. PID implies that solar modules are subjected to accelerated efficiency losses and therefore don't achieve the expected [...]

Defective inverter with transfo? Transformerless inverter with PIDbox is THE solution

Aftopping SMA

Independent research of Solar Tester shows that more than two thirds of solar modules of 10 years or younger is suffering from efficiency losses greater than 20% due to Potential Induced Degradation or PID. PID occurs on all photovoltaic panels, often without the owner of the installation being aware of it, and implies accelerated efficiency […]