PV Modules: Bifacial technology

go PV Current status Trackers: 1P vs 2P • • Most common tracker geometries: 1 module in portrait or 2 modules in portrait (1-P or 2-P) Currently it is not clear which is the best option: trackers manufacturers are providing their studies Topics under discussion: . Bifacial Gain . Operating temperature of modules . Flexibility in design • Possible backside shadowing in 1-P due to torque-tube • Operation and Maintenance (O&M) differences 1-P 2-P (a) RADIANCE image showing torque tube behind a module's row and (b) (b) Grear across the module averaged over a sunny day when torque tube is present, compared to Grear for the module without torque tube (tubeless). Pelaez et al. Model and Validation of Single Axis Tracking with Bifacial PV. IEEE Journal of Photovoltaics, vol. 9, no. 3, May 2019. Grear X 100/Grear,tubeless-100 [%] tecnalia (a) Torque tube shading loss -10- -15 30cm gap 20cm gap 10cm gap T T T -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 Module X position [m] (b) Inspiring Business GoPV Project | 1st TRAINING COURSES TECHNICAL FOCUS ON FUTURE SOLAR PV SYSTEMS October 26-29th 2020

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