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Data-Driven Scope 3 Reporting Without the Burden
Accurate disclosures at speed with no questionnaires and no gaps.
The challenge: Manual data and reporting bottlenecks
For a global professional services network like Grant Thornton, managing Scope 3 emissions data across thousands of suppliers presents a significant challenge. The traditional approach—relying on annual surveys and manual data reconciliation—was time-consuming and often resulted in coverage gaps, limiting the firm's ability to produce timely and fully assured disclosures.
The solution: Verified supplier data, automated
Grant Thornton turned to DitchCarbon to streamline its Scope 3 data collection and reporting. By leveraging DitchCarbon's platform, the firm could access a vast universe of verified supplier emissions data, dramatically reducing the need for direct questionnaires.
DitchCarbon's ability to consolidate public disclosures and primary data into a single, audit-ready source of truth was a game-changer. We moved from chasing suppliers for months to having decision-ready insights in weeks.
Key outcomes:
- Speed to value: Automated data collection provided a comprehensive emissions baseline in a fraction of the time.
- Improved accuracy: Verified data with clear provenance replaced estimates and averages, strengthening the credibility of disclosures.
- Reduced admin: The team was freed from manual data entry and follow-ups, allowing them to focus on reduction strategies rather than data wrangling.
The result: Confident reporting and a clear path forward
With DitchCarbon, Grant Thornton now has a scalable, efficient process for Scope 3 measurement. The firm can generate accurate disclosures at speed, satisfy audit requirements with ease, and focus its resources on meaningful decarbonisation initiatives across its supply chain.
Audit-Ready Accuracy
Reliance on verified, publicly disclosed supplier data eliminated common reporting errors.
Cost Efficiency
Significant savings compared to expensive, survey-based legacy providers.
Grant Thornton
manages Scope 3 emissions with DitchCarbon.
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Overview
A Professional Services Firm Ready to Ditch the Survey
Grant Thornton, a global leader in professional services and consulting, needed a smarter way to handle Scope 3 reporting. With a complex supplier network, the firm was under pressure to deliver accurate disclosures quickly and efficiently — while reducing reliance on manual questionnaires and outdated data-gathering methods. Ditch Carbon became that partner — replacing surveys with automated data collection and helping Grant Thornton accelerate their sustainability reporting with confidence.
The Challenge
Slow, Costly, and Still Getting It Wrong
Grant Thornton's procurement and sustainability teams faced recurring obstacles:
- Emissions data collection was dependent on manual questionnaires through platforms like EcoVadis and CDP.
- Processes were slow, resource-heavy, and costly, with little year-over-year improvement.
- Accuracy was inconsistent, leaving reports vulnerable to gaps and errors.
"Many firms are moving away from platforms like EcoVadis. Sending questionnaires seems nonsensical when the reality is that all necessary emissions data is already publicly available."
Richard Jamison, Head of Procurement & Property, Grant Thornton UK
The Solution
Automated Data From Audited Public Disclosures
Grant Thornton turned to Ditch Carbon to eliminate survey fatigue and automate data sourcing. Instead of relying on supplier responses, Ditch Carbon applied its technology to extract and normalize emissions directly from audited, publicly available disclosures. Key capabilities included:
- Automated data extraction from supplier reports and filings.
- Normalization and validation aligned with GHG Protocol standards.
- System-ready outputs for ESG and procurement platforms.
"Questionnaire-based platforms create more problems than they solve — cost, complexity, and limited accuracy. Ditch Carbon gives us exactly what we need, quickly."
Richard Jamison, Grant Thornton
What's Next
Deeper Engagement, Broader Reach
With accurate, audit-ready data now in hand, Grant Thornton is positioned to deepen supplier engagement, streamline sustainability reporting across regions, and prepare for emerging regulatory requirements with confidence.
Faster reporting cycles.
Greater accuracy and reliability.
A simpler process that removed complexity for both teams and suppliers.
Months of manual aggregation eliminated and emissions forecasting live in 6 months.
