The Subtle Art of Bifacial Performance Modeling

Silvana Ayala Pelaez, Christopher Deline, William Marion, Matthew Muller, Joshua Stein, Cameron Stark

Research output: NRELPresentation


The PV industry is set for rapid uptake of bifacial PV if key barriers are eliminated, such as accurate performance models, standards around the rating of bifacial modules, and accurate assessment of site albedo. In this presentation we will talk about the changes to the ray-trace program bifacial_radiance, it's new capabilities that allow it to model the performance for any module at any size array. A new graphical user interface has been released on time for this conference. Preliminary results for torque-tube shading are also presented.
Original languageAmerican English
Number of pages34
StatePublished - 2019

Publication series

NamePresented at the 2019 12th PV Performance Modeling and Monitoring Workshop, 14-16 May 2019, Albuquerque, New Mexico

NREL Publication Number

  • NREL/PR-5K00-74009


  • bifacial photovoltaics
  • performance models
  • PV
  • solar
  • standards


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