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This assignment guideliens:
We are seeking your expertise to develop a calculation tool (Excel-based calculator) for estimating emissions under Scope 3, Category 1: Purchased Goods and Services, as defined by the GHG Protocol. This tool will enable us to streamline data collection, calculation, and reporting of emissions associated with the production of goods and services we purchase.
Objective:
To create a user-friendly, Excel-based emissions calculator for Category 1: Purchased Goods and Services, aligned with the GHG Protocol guidelines, enabling accurate and efficient emissions estimation.
Components to Be Included:
The tool should incorporate the following features and align with the GHG Protocol requirements:
1.
Boundary Setting and Scope Definition:
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Ensure the calculator accounts for cradle-to-gate emissions for all purchased goods and services.
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Include emissions from upstream activities such as raw material extraction, processing, manufacturing, and transportation to the point of purchase.
2.
Data Input Requirements:
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Design input fields for:
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Types of goods and services purchased.
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Quantities or volumes (e.g., kilograms, liters, pieces, etc.).
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Financial spend data (if available, for a spend-based approach).
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Supplier-specific emissions data (if available).
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Allow flexibility to input both primary data (from suppliers) and secondary data (from databases or assumptions).
3.
Emissions Factor Integration:
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Embed a database of emissions factors for common materials and products based on:
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Material type (e.g., steel, aluminum, textiles, plastics).
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Sector-specific emissions data.
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Regional variations in production.
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Allow for custom emissions factor inputs to accommodate company-specific or supplier-specific data.
4.
Calculation Methodology:
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Incorporate the Spend-Based, Process-Based, and Hybrid Approaches:
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Spend-Based: Financial spend multiplied by emissions factor per monetary unit.
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Process-Based: Quantity-based calculations using material-specific emissions factors.
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Hybrid: Combine spend and quantity-based data where applicable.
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Automate the calculation process with formulas embedded in the Excel sheet.
5.
Data Quality Management:
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Include a data quality scoring mechanism to assess the completeness and reliability of the input data.
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Highlight areas where primary data or improved data collection is needed.
6.
Reporting and Documentation:
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Automate summary outputs, including:
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Total emissions by product type, category, or supplier.
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Graphs or charts for visualization.
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Include fields for documentation of assumptions, data sources, and calculation methods to ensure transparency.
7.
Tool Features:
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User-friendly interface with clear instructions.
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Drop-down menus or predefined options for ease of data entry.
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Conditional formatting to flag missing or inconsistent data.
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Macro-enabled calculations (if applicable) for large data sets.
8.
Alignment with GHG Protocol:
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Ensure all calculations and methodologies are compliant with the GHG Protocol’s guidance for Scope 3, Category 1.
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Include recommendations for data collection improvement over time.
Deliverables:
We expect the following deliverables from your engagement:
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A fully functional Excel-based emissions calculator tailored to Category 1: Purchased Goods and Services.
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A detailed user guide explaining how to use the tool, including input data requirements, calculation steps, and output interpretation.
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Integration of a database of emissions factors and instructions for updating the database as needed.
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Recommendations for improving data quality and supplier engagement.
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