Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Optimization and performance of bifacial solar modules: A global perspective

Journal Article · · Applied Energy

With the rapidly growing interest in bifacial photovoltaics (PV), a worldwide map of their potential performance can help assess and accelerate the global deployment of this emerging technology. However, the existing literature only highlights optimized bifacial PV for a few geographic locations or develops worldwide performance maps for very specific configurations, such as the vertical installation. It is still difficult to translate these location- and configuration-specific conclusions to a general optimized performance of this technology. In this paper, we present a global study and optimization of bifacial solar modules using a rigorous and comprehensive modeling framework. Our results demonstrate that with a low albedo of 0.25, the bifacial gain of ground-mounted bifacial modules is less than 10% worldwide. However, increasing the albedo to 0.5 and elevating modules 1 m above the ground can boost the bifacial gain to 30%. Moreover, we derive a set of empirical design rules, which optimize bifacial solar modules across the world and provide the groundwork for rapid assessment of the location-specific performance. We find that ground-mounted, vertical, east-west-facing bifacial modules will outperform their south-north-facing, optimally tilted counterparts by up to 15% below the latitude of 30 degrees, for an albedo of 0.5. The relative energy output is reversed in latitudes above 30 degrees. A detailed and systematic comparison with data from Asia, Africa, Europe, and North America validates the model presented in this paper.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S); National Science Foundation (NSF)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1423188
Report Number(s):
NREL/JA--5J00-70091
Journal Information:
Applied Energy, Journal Name: Applied Energy Journal Issue: C Vol. 212; ISSN 0306-2619
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (43)

Assessing the outdoor operating temperature of photovoltaic modules journal June 2008
Simulation of Energy Production by Bifacial Modules with Revision of Ground Reflection journal January 2014
Bifacial photovoltaic module best-fit annual energy yield model with azimuthal correction conference June 2016
Bifacial-PV Power Output Gain in the Field Test Using ""EarthON"" High Bifaciality Solar Cells text January 2013
A study of the annual performance of bifacial photovoltaic modules in the case of vertical facade integration journal November 2015
Computer simulation of enhanced output from bifacial photovoltaic modules journal October 1993
Annual angular reflection losses in PV modules: ANNUAL ANGULAR REFLECTION LOSSES IN PV MODULES journal November 2004
Theoretical Background of Thermal Infrared Remote Sensing book January 2013
Correlation equation for hourly diffuse radiation on a horizontal surface journal January 1977
50 Per cent more output power from an albedo-collecting flat panel using bifacial solar cells journal January 1982
Estimation of the diffuse radiation fraction for hourly, daily and monthly-average global radiation journal January 1982
Diffuse fraction correlations journal January 1990
Diffusing reflectors for bifacial photovoltaic panels journal January 1985
A new simplified version of the perez diffuse irradiance model for tilted surfaces journal January 1987
Solar radiation model journal July 2001
Effects of sandblasting on the efficiencies of solar panels journal April 2000
Calculation of the PV modules angular losses under field conditions by means of an analytical model journal December 2001
Development of bifacial PV cells for new applications of flat-plate modules journal February 2003
Simulation of photovoltaic centrals with dynamic shading journal March 2013
Numerical investigation of dust pollution on a solar photovoltaic (PV) system mounted on an isolated building journal October 2016
Implications of high-penetration renewables for ratepayers and utilities in the residential solar photovoltaic (PV) market journal October 2016
Levelized cost of electricity for solar photovoltaic and electrical energy storage journal March 2017
Vertical bifacial solar farms: Physics, design, and global optimization journal November 2017
Outdoor Performance of Bifacial Modules by Measurements and Modelling journal August 2015
Flexible fiber-type dye-sensitized solar cells based on highly ordered TiO2 nanotube arrays journal December 2013
Vertically mounted bifacial photovoltaic modules: A global analysis journal November 2013
New integrated simulation tool for the optimum design of bifacial solar panel with reflectors on a specific site journal September 2015
Bifacial photovoltaic panels field journal January 2016
Bifacial solar photovoltaics – A technology review journal July 2016
A simplified model of uniform shading in large photovoltaic arrays journal October 2013
Bifacial configurations for CdTe solar cells journal September 2007
Microstructural and diffusion properties of CIGS thin film solar cells fabricated using transparent conducting oxide back contacts journal June 2005
Multi-Variable Bifacial Photovoltaic Module Test Results and Best-Fit Annual Bifacial Energy Yield Model journal January 2016
Analysis of the Annual Performance of Bifacial Modules and Optimization Methods journal January 2015
Optics-Based Approach to Thermal Management of Photovoltaics: Selective-Spectral and Radiative Cooling journal March 2017
Assessment of Bifacial Photovoltaic Module Power Rating Methodologies—Inside and Out journal March 2017
Regional soiling stations for PV: Soling loss analysis conference June 2016
Bifacial photovoltaic module best-fit annual energy yield model with azimuthal correction conference June 2016
Bifacial photovoltaic technology for the oil and gas industry conference December 2015
View Factors to Grounds of Photovoltaic Collectors journal September 2016
On the Use of Power Laws for Estimates of Wind Power Potential journal March 1978
Insolation in Relation to Cloudiness and Cloud Density journal September 1945
Insolation in Relation to Cloud type journal December 1946

Cited By (11)

Experimental evaluation of collection, thermal, and conductivity efficiency of a solar distiller pond as a free concentration unit in wastewater treatment process journal August 2018
Microstructural Analysis of Local Silicon Corrosion of Bifacial Solar Cells as Root Cause of Potential‐Induced Degradation at the Rear Side journal August 2019
Microstructural Analysis of Local Silicon Corrosion of Bifacial Solar Cells as Root Cause of Potential‐Induced Degradation at the Rear Side journal July 2019
Local Corrosion of Silicon as Root Cause for Potential‐Induced Degradation at the Rear Side of Bifacial PERC Solar Cells journal May 2019
Towards large-scale deployment of bifacial photovoltaics journal June 2018
Sustainable co-production of food and solar power to relax land-use constraints journal October 2019
Minimising the levelised cost of electricity for bifacial solar panel arrays using Bayesian optimisation journal January 2020
Methodology of energy yield modelling of perovskite-based multi-junction photovoltaics journal January 2019
Outdoor Performance Test of Bifacial n-Type Silicon Photovoltaic Modules journal November 2019
Minimising the Levelised Cost of Electricity for Bifacial Solar Panel Arrays using Bayesian Optimisation preprint January 2019
Methodology of energy yield modelling of perovskite-based multi-junction photovoltaics text January 2019

Figures / Tables (16)