A B Corp manufacturer needed accurate Scope 3 emissions data for investor reporting. Built a carbon accounting system that tracked emissions across 200+ suppliers.

The Challenge

A certified B Corp manufacturer needed accurate Scope 3 emissions data. Their investors and customers were increasingly asking about supply chain sustainability, and their B Corp recertification required robust environmental metrics.

The challenge was significant:

200+ suppliers across multiple countries
No standardized data collection from suppliers
Multiple product lines with complex bills of materials
Need for auditable, investor-grade reporting

The Approach

Phase 1: Emissions Mapping

Mapped entire value chain to identify emission sources across Scope 1, 2, and 3. Scope 3 represented over 80% of total emissions.

Phase 2: Data Collection System

Built a tiered approach: direct measurement for top 20 suppliers, activity-based estimates for medium suppliers, and spend-based estimates for smaller suppliers.

Phase 3: Calculation Engine

Built a system that tracked emissions by supplier, material category, and product line with full audit trail.

Phase 4: Reporting and Insights

Delivered annual emissions reports aligned with GHG Protocol standards, product-level carbon footprints, and supplier sustainability scorecards.

The Outcome

Data quality:

95% of emissions now measured or estimated with activity data (vs. 30% previously)
Passed external audit for B Corp recertification

Business impact:

Identified $200K+ annual savings through logistics optimization
Two major suppliers committed to emissions reduction plans
12% reduction in emissions in first year