{"id":3470,"date":"2026-02-02T17:59:16","date_gmt":"2026-02-02T17:59:16","guid":{"rendered":"https:\/\/dev-wordpress.lucisun.com\/?page_id=3470"},"modified":"2026-02-17T01:59:04","modified_gmt":"2026-02-17T01:59:04","slug":"pv-bifacial","status":"publish","type":"page","link":"https:\/\/dev-wordpress.lucisun.com\/fr\/solutions\/lusim\/pv-bifacial\/","title":{"rendered":"PV biface"},"content":{"rendered":"
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Solutions\/Lusim<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Bifacial photovoltaic systems have become a mainstream technology in utility scale and complex PV projects. Their performance depends not only on irradiance incident on the front side of the modules, but also on reflected and diffuse irradiance reaching the rear side from the ground and surrounding surfaces. LuciSun provides technical advisory and advanced modelling services for bifacial PV projects, supporting feasibility studies, design optimisation, and risk-informed decision-making in contexts where simplified bifacial assumptions are no longer sufficient.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Technical advisory and modelling services for bifacial PV projects <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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LuciSun delivers dedicated simulation studies for bifacial PV systems across a wide range of applications, including ground mounted plants, carports, vertical PV, building-integrated photovoltaics (BIPV), agrivoltaics, and sites with complex terrain or surroundings. These services have been delivered to a wide range of clients across multiple projects, covering utility scale installations and complex configurations where standard bifacial assumptions were not sufficient. The studies are carried out by LuciSun experts using LuSim as a core modelling tool to explicitly assess rear side irradiance, bifacial gains, and their sensitivity to design and environmental parameters.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Bifacial PV as an environment dependent photovoltaic system <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Unlike monofacial systems, bifacial PV performance is strongly coupled to its environment. Ground properties, surrounding objects, terrain geometry, and shading conditions all influence the amount and distribution of irradiance reaching the rear side of the modules. Uniform bifacial gain factors or simplified albedo based corrections often fail to capture these interactions accurately, especially in non-ideal or heterogeneous environments. LuSim addresses this challenge through explicit 3D representation of geometry and materials.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Explicit modelling of rear side irradiance <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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LuSim \u00e9value l'irradiance du c\u00f4t\u00e9 arri\u00e8re en utilisant le m\u00eame cadre 3D physiquement coh\u00e9rent appliqu\u00e9 au c\u00f4t\u00e9 avant des modules. L'irradiance r\u00e9fl\u00e9chie par le sol et les surfaces environnantes est calcul\u00e9e explicitement plut\u00f4t qu'approxim\u00e9e par des coefficients empiriques de gain bifacial. Le c\u00f4t\u00e9 arri\u00e8re de chaque module est discr\u00e9tis\u00e9 spatialement, permettant aux contributions d'irradiance de varier localement sur la surface du module et dans le temps, refl\u00e9tant l'h\u00e9t\u00e9rog\u00e9n\u00e9it\u00e9 spatiale et temporelle r\u00e9elle.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Facteurs de vue 3D \u00e0 haute r\u00e9solution pour la mod\u00e9lisation bifaciale <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
\n\t\t\t\t\t\t\t\t\tLes contributions d'irradiance diffuse et r\u00e9fl\u00e9chie sont \u00e9valu\u00e9es \u00e0 l'aide de facteurs de vue 3D \u00e0 haute r\u00e9solution spatiale. Ces facteurs de vue sont calcul\u00e9s localement entre des \u00e9l\u00e9ments de surface discrets, en tenant compte de la visibilit\u00e9 mutuelle, de l'occlusion partielle et de la g\u00e9om\u00e9trie changeante. Cette approche va au-del\u00e0 des m\u00e9thodes simplifi\u00e9es bidimensionnelles ou des facteurs de vue agr\u00e9g\u00e9s et permet \u00e0 LuSim de capturer naturellement des effets tels que les environnements asym\u00e9triques, l'ombrage partiel du c\u00f4t\u00e9 arri\u00e8re et les interactions complexes de disposition. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t
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Repr\u00e9sentation du sol, alb\u00e9do et h\u00e9t\u00e9rog\u00e9n\u00e9it\u00e9 de surface <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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La r\u00e9flectance du sol joue un r\u00f4le central dans les performances des PV bifaciaux, pourtant les installations r\u00e9elles pr\u00e9sentent rarement un alb\u00e9do uniforme. La v\u00e9g\u00e9tation, les conditions du sol, le gravier, le b\u00e9ton, la neige ou les traitements r\u00e9fl\u00e9chissants d\u00e9di\u00e9s peuvent cr\u00e9er une forte variabilit\u00e9 spatiale. Au-del\u00e0 des simples hypoth\u00e8ses Lambertiennes, la distribution angulaire de la lumi\u00e8re r\u00e9fl\u00e9chie, couramment d\u00e9crite par des fonctions de distribution de r\u00e9flectance bidirectionnelle (BRDF), peut influencer l'irradiance du c\u00f4t\u00e9 arri\u00e8re dans des configurations sp\u00e9cifiques.<\/p>

LuSim repr\u00e9sente le sol explicitement en 3D et permet d'attribuer des propri\u00e9t\u00e9s mat\u00e9rielles variant spatialement. Cela permet d'analyser les distributions d'alb\u00e9do h\u00e9t\u00e9rog\u00e8nes, les traitements partiels et les configurations de sol localis\u00e9es, et d'\u00e9valuer leur impact sur les gains bifaciaux de mani\u00e8re coh\u00e9rente, tout en restant compatible avec diff\u00e9rentes hypoth\u00e8ses de r\u00e9flectance en fonction des besoins du projet.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Optimisation des traitements de sol hautement r\u00e9fl\u00e9chissants <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Beyond global albedo assumptions, bifacial PV design may involve the use of highly reflective ground treatments, such as white gravel or reflective membranes, applied only on specific areas of the site. LuSim enables the assessment of the position, extent, and geometry of such reflective surfaces relative to the PV rows, allowing LuciSun studies to determine where high reflectance materials are most effective in increasing rear side irradiance.<\/p>

This type of analysis is applicable to both fixed structures and tracking systems, where the optimal placement of reflective surfaces depends on shading patterns, row spacing, and system geometry.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Interaction between shading and bifacial gains <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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In bifacial systems, shading affects not only direct irradiance on the modules but also the reflected component by modifying which parts of the ground and surrounding surfaces are illuminated. Support structures, mounting elements, and nearby objects can significantly alter rear side irradiance distributions and introduce localised electrical mismatch. LuSim captures this interaction coherently by evaluating shading, illumination, and reflected irradiance within a single 3D framework, allowing rear side contributions to change consistently with geometry and solar position.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Integration into PV energy yield and performance assessment <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Rear side irradiance computed by LuSim is integrated directly into the PV energy yield modelling chain. Front and rear contributions are combined at the module level and converted into electrical power using validated photovoltaic performance models. Spatially resolved rear side irradiance enables consistent assessment of bifacial gains alongside electrical behaviour, mismatch effects, and system losses, supporting robust energy yield assessments without relying on fixed bifacial assumptions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Validation and application in industrial and research projects <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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The bifacial modelling approaches implemented in LuSim have been applied and validated in industrial studies and research projects, including large scale utility PV plants, carports, agrivoltaic systems, and European research initiatives such as SERENDI-PV and dedicated bifacial PV research projects. These applications have supported comparative analyses, sensitivity studies, and discussions of modelling uncertainty under real project conditions.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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From bifacial modelling to decision support <\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Accurate bifacial PV modelling is not only a design optimisation issue, but also a prerequisite for robust uncertainty assessment and bankability analysis. Small changes in geometry, ground treatment, or shading configuration can lead to significant differences in bifacial gains and overall energy yield. LuciSun\u2019s bifacial PV advisory services provide a physically consistent and spatially resolved basis to compare design options, assess risks, and support informed technical and financial decision-making in complex bifacial PV projects.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t

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Solutions\/Lusim Bifacial photovoltaic systems have become a mainstream technology in utility scale and complex PV projects. Their performance depends not only on irradiance incident on the front side of the modules, but also on reflected and diffuse irradiance reaching the rear side from the ground and surrounding surfaces. LuciSun provides technical advisory and advanced modelling […]<\/p>","protected":false},"author":2,"featured_media":0,"parent":1939,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":{"_acf_changed":false,"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"class_list":["post-3470","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nBifacial PV - Lucisun<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/dev-wordpress.lucisun.com\/fr\/solutions\/lusim\/pv-bifacial\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Bifacial PV - Lucisun\" \/>\n<meta property=\"og:description\" content=\"Solutions\/Lusim Bifacial photovoltaic systems have become a mainstream technology in utility scale and complex PV projects. Their performance depends not only on irradiance incident on the front side of the modules, but also on reflected and diffuse irradiance reaching the rear side from the ground and surrounding surfaces. 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