Short answer

When designing or specifying bifacial PV systems, prioritize installation methods and site characteristics that enhance rear-side energy capture, as these significantly impact the overall environmental performance.

Field: Resource Management
Source: Energies (2023)
Method: Literature Review / Meta-analysis
Evidence: Moderate effect

The environmental advantages of bifacial photovoltaic panels are significantly influenced by installation factors like mounting structure and ground surface reflectivity, which are often overlooked in standard Life Cycle Assessments. This resource management research insight is drawn from a 2023 study published in Energies. Using Literature review / meta-analysis, researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing or specifying bifacial PV systems, prioritize installation methods and site characteristics that enhance rear-side energy capture, as these significantly impact the overall environmental performance.

Study

Resource ManagementRecentModerate effect

Bifacial PV Panels: Environmental Benefits Hinge on Installation Details

Energies · 2023

Key Findings

01Installation parameters such as the mounting structure and ground surface material (affecting albedo) are critical for maximizing bifacial panel energy gain but are often omitted from LCA studies.
02Diffuse irradiation reaching the rear surface of bifacial panels is another key factor for energy gain that is frequently not accounted for in LCAs.
03A lack of comprehensive analysis in existing studies hinders effective comparison between bifacial and monofacial PV panels, as well as between different bifacial installations.

Application

Design takeaway

How to apply

When conducting an environmental assessment for a bifacial PV project, ensure that the LCA explicitly includes variables for mounting height, tilt angle, ground cover reflectivity (albedo), and potential shading from surroundings.

Project actions

01When researching new technologies, look beyond the core product and consider its integration into a larger system.
02Think about how the environment where a product is used can affect its performance and sustainability.

Method & Evidence

AimTo critically review Life Cycle Assessment (LCA) studies of bifacial photovoltaic panels to identify key environmental burdens and determine if operational factors influencing energy gain are adequately considered.

MethodLiterature Review / Meta-analysis

ProcedureThe authors reviewed existing Life Cycle Assessment (LCA) studies on bifacial photovoltaic (BPV) panels, analyzing the crucial processes and materials contributing to environmental burdens. They also assessed how operational factors affecting energy production and bifacial gain are incorporated into these analyses.

ContextRenewable energy technology, specifically solar photovoltaics.

Variables

IV["Installation parameters (e.g., mounting structure type, ground surface material, albedo)","Diffuse irradiation"]

DV["Energy production gain","Overall environmental impact (as assessed by LCA)"]

CV["Panel technology (bifacial vs. monofacial)","Solar irradiance (direct)"]

Strengths & Limitations

Strengths

+Provides a critical review of existing research, identifying gaps.
+Focuses on a key emerging renewable energy technology.

Limitations

It can be challenging to find standardized data for all installation variables across different LCA studies, making direct comparisons difficult.

Reliability & validity

The validity of the findings relies on the quality and comprehensiveness of the reviewed LCA studies. The reliability of the conclusions is moderate due to the identified inconsistencies in methodologies across studies.

Think critically

How might the 'gain' in energy production from bifacial panels be offset by increased material use or manufacturing complexity in the mounting systems, and how should this be factored into an environmental assessment?

Design Principles

"Holistic system design: Evaluate the environmental impact of a technology by considering its entire lifecycle and operational context, including installation and surrounding environment."

For designers and engineers, this highlights the need to move beyond just the panel's inherent properties and consider the entire system's environmental footprint. Optimizing installation parameters can unlock greater sustainability gains, making the technology more impactful in the transition to renewable energy.

What This Means for Your Design

Bifacial solar panels can be greener, but only if we install them in the right way and on the right surfaces. Standard environmental checks often forget these important details.

How to use in your project

1.Use this research to justify the importance of considering system-level factors in your design project's environmental impact assessment.

Add to My Project

Quick Cite

Paragraph starter

This research highlights that the environmental performance of bifacial photovoltaic panels is significantly influenced by installation factors such as mounting structure and ground surface albedo, which are often not comprehensively addressed in Life Cycle Assessments. Therefore, a thorough evaluation of a bifacial PV system's sustainability requires a holistic approach that accounts for these operational parameters to accurately assess its environmental benefits.

Source

Energies

A Critical Review of the Environmental Performance of Bifacial Photovoltaic Panels

journal · 2023

View source

Questions About This Research

What does the research say about bifacial pv panels: environmental benefits hinge on installation details?: When designing or specifying bifacial PV systems, prioritize installation methods and site characteristics that enhance rear-side energy capture, as these significantly impact the overall environmental performance. Evidence: Energies (2023).
Why does "Bifacial PV Panels: Environmental Benefits Hinge on Installation Details" matter for design?: For designers and engineers, this highlights the need to move beyond just the panel's inherent properties and consider the entire system's environmental footprint. Optimizing installation parameters can unlock greater sustainability gains, making the technology more impactful in the transition to renewable energy.
How can designers apply this research?: When designing or specifying bifacial PV systems, prioritize installation methods and site characteristics that enhance rear-side energy capture, as these significantly impact the overall environmental performance.
What were the main findings?: Installation parameters such as the mounting structure and ground surface material (affecting albedo) are critical for maximizing bifacial panel energy gain but are often omitted from LCA studies.. Diffuse irradiation reaching the rear surface of bifacial panels is another key factor for energy gain that is frequently not accounted for in LCAs.. A lack of comprehensive analysis in existing studies hinders effective comparison between bifacial and monofacial PV panels, as well as between different bifacial installations.
What research method was used?: Literature Review / Meta-analysis.
How strong is the evidence?: Evidence strength is rated Moderate effect, based on a 2023 journal from Energies.
What should I do differently in my next project?: When conducting an environmental assessment for a bifacial PV project, ensure that the LCA explicitly includes variables for mounting height, tilt angle, ground cover reflectivity (albedo), and potential shading from surroundings.
What are the limitations?: The review is based on existing LCA studies, which may themselves have limitations in scope or methodology. The actual environmental impact can vary significantly based on specific site conditions and installation practices.