
Data-driven climate progress without the pain
CDP supplier score lifted from C to A- across 15,000 suppliers.

Achieved 3rd Party Assurance
They achieved 3rd-party assurance for their scope 3 for the first time
Improved CDP Score
Their CDP supplier score improved from C to A-
Clear Supplier Engagement Action
A scalable, automated way to handle Scope 3 emissions across 15,000 suppliers
Coherent
manages Scope 3 emissions with DitchCarbon.
.webp)
Overview
A Global Manufacturer Under Pressure to Report
Coherent, a global leader in photonics, needed to streamline and enhance their approach to Scope 3 emissions reporting. Under pressure from customers to reduce carbon emissions and prepare for public disclosure via CDP, the Coherent team sought a partner who could make their decarbonization journey more efficient, accurate, and reliable. DitchCarbon became that partner - delivering not just easier processes, but better outcomes and a collaborative experience that exceeded expectations.
The Challenge
15,000 Suppliers, One Intern, One Deadline
Coherent's sustainability team faced a daunting task: report audit-ready Scope 3 emissions data across a supplier base of 15,000 - with limited time, tools, and resources.
"We had 15,000 suppliers and one intern. That doesn't scale. And we were under pressure to produce audit-ready disclosures for CDP. We had to get out of spreadsheets."
Richard Marino, Director of Sustainability, Coherent Corp.
The team had been manually gathering emissions data from supplier sustainability and CDP filings for high-spend suppliers - a time-intensive process that was inefficient, unscalable, and exposed to verification risk. With CDP deadlines approaching and assurance reviews pending, Coherent needed to move fast - without compromising data integrity.
The Solution
From Manual Chaos to Audit-Ready Reporting
Coherent turned to DitchCarbon to clean, categorize, and manage Scope 3 emissions data efficiently. This wasn't just about creating dashboards - it was about transforming a burdensome, time-consuming, manual workflow into a streamlined, high-integrity reporting process. DitchCarbon supported Coherent with:
- Entity resolution at scale
- Efficient supplier ranking and clear supplier engagement strategy
- Data structure built for assurance
- Compelling data visualisation tool
Results
Assurance Achieved, Team Free to Act
"This was our first time seeking limited assurance on our emissions data. I was apprehensive about it going in, but with DitchCarbon's data the assurance review went smoothly. I'd even go so far as to say they made it easy.
Richard Marino, Director of Sustainability, Coherent Corp.
By reducing the burden of data collection, DitchCarbon has freed up Coherent's sustainability team to focus on action - not administration.
Easier assurance reviews
DitchCarbon’s verified data framework streamlined the assurance process, making it straightforward rather than burdensome.
More climate action, less admin
The team shifted focus from spreadsheet wrangling to strategic sustainability initiatives.
Accurate data at scale
Reliable emissions data across 15000 suppliers without manual collection efforts.

Supplier-specific emissions data across thousands of vendors without a single survey.

