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Title: Chapter 8: A 'Global' View on Bifacial Gain: Dependence on Geographic Location and Environmental Conditions

Abstract

The simulation results presented in this chapter demonstrate how bifacial PV systems can bring a performance gain all around the globe, resolving a certain misbelief that they may only form a niche market restricted to specific locations or installations. Global predictions, based on irradiance, indicate bifacial gains in the order of 50% of the natural albedo for equator-facing systems with optimized tilt angle. In locations with low clearness index, the bifacial gain can even be higher. At system level the bifacial gain will be reduced by 20% to 50% relative to a free-standing panel, due to increased self-shading and to limitation of the diffuse irradiance on the rear by adjacent sheds. Even though the rear side irradiance of a bifacial module is inherently inhomogeneous, due to self-shading and external mounting structures, our simulations have shown that the RSD of the total irradiance does not exceed 5%, even at very high albedo, and will usually be much smaller. The simulation methods applied in this chapter and their ongoing integration into commercially available software tools, like PVsyst, will give system designers and installers more visibility on the configuration layout of a bifacial PV plant at their specific location, the associated bifacial gainmore » and the effect on their return on investment.« less

Authors:
 [1];  [2]; ORCiD logo [3]
  1. French Alternative Energies and Atomic Energy Commission (CEA)
  2. Energy Research Centre of the Netherlands (ECN)
  3. National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1567020
Report Number(s):
NREL/CH-5K00-70970
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Book
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 47 OTHER INSTRUMENTATION; solar cells; environmental factors; photovoltaic power systems; power system simulation

Citation Formats

Gerritsen, Eric, Janssen, Gaby, and Deline, Christopher A. Chapter 8: A 'Global' View on Bifacial Gain: Dependence on Geographic Location and Environmental Conditions. United States: N. p., 2018. Web. doi:10.1049/PBPO107E_ch8.
Gerritsen, Eric, Janssen, Gaby, & Deline, Christopher A. Chapter 8: A 'Global' View on Bifacial Gain: Dependence on Geographic Location and Environmental Conditions. United States. doi:10.1049/PBPO107E_ch8.
Gerritsen, Eric, Janssen, Gaby, and Deline, Christopher A. Mon . "Chapter 8: A 'Global' View on Bifacial Gain: Dependence on Geographic Location and Environmental Conditions". United States. doi:10.1049/PBPO107E_ch8.
@article{osti_1567020,
title = {Chapter 8: A 'Global' View on Bifacial Gain: Dependence on Geographic Location and Environmental Conditions},
author = {Gerritsen, Eric and Janssen, Gaby and Deline, Christopher A},
abstractNote = {The simulation results presented in this chapter demonstrate how bifacial PV systems can bring a performance gain all around the globe, resolving a certain misbelief that they may only form a niche market restricted to specific locations or installations. Global predictions, based on irradiance, indicate bifacial gains in the order of 50% of the natural albedo for equator-facing systems with optimized tilt angle. In locations with low clearness index, the bifacial gain can even be higher. At system level the bifacial gain will be reduced by 20% to 50% relative to a free-standing panel, due to increased self-shading and to limitation of the diffuse irradiance on the rear by adjacent sheds. Even though the rear side irradiance of a bifacial module is inherently inhomogeneous, due to self-shading and external mounting structures, our simulations have shown that the RSD of the total irradiance does not exceed 5%, even at very high albedo, and will usually be much smaller. The simulation methods applied in this chapter and their ongoing integration into commercially available software tools, like PVsyst, will give system designers and installers more visibility on the configuration layout of a bifacial PV plant at their specific location, the associated bifacial gain and the effect on their return on investment.},
doi = {10.1049/PBPO107E_ch8},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {10}
}

Book:
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