Standard requirements for bifaciality of solar modules

Do bifacial PV modules need to be electrically stabilized?

In accordance with IEC 61215-1,-1-1,-2 standards, PV modules should be electrically stabilized before any further measurement. As bifacial PV devices are mostly PERT, PERC and HJT technology based, issues such as light-induced degradation (LID) exist and should not be neglected.

Do bifacial PV modules need a power rating method?

In response to the strong demand for an appropriate power rating method for bifacial PV modules, the international standard IEC 60904-1-2 has been proposed, which describes the test methods and additional requirements for the I–V characterization.

Can a solar simulator be used to measure bifacial PV devices?

As described in IEC 60904-1-2, for single-sided illumination measurements of bifacial PV devices, a solar simulator (as defined in IEC 60904-9 ) with adjustable irradiance level has to be used for the I-V characterisation.

Are bifacial PV modules better than monofacial solar panels?

Compared with monofacial PV modules, energy yields of around 10% higher (or even more) from bifacial modules in the field have been consistently reported by various parties [2,3]. Such increases in yield can considerably reduce the levelized cost of energy. Bifacial PV technology is not a new concept in the PV community.