DitchCarbon vs EcoVadis: A Scope 3 Data Comparison

Choosing the Right Tool for Your Supplier Decarbonisation Journey

Organisations serious about climate action know that tackling Scope 3 emissions-particularly from purchased goods and services-is the biggest challenge and the greatest opportunity. The market for sustainability data platforms has grown rapidly, but not all tools are built for the same job. The choice often comes down to a fundamental question: is your primary goal broad ESG compliance and risk rating, or is it targeted, measurable decarbonisation?

This comparison examines two leading platforms, DitchCarbon and EcoVadis, through that lens. DitchCarbon is a specialist platform designed to calculate, manage, and reduce Scope 3 emissions with audit-ready accuracy. EcoVadis is a widely recognised provider of business sustainability ratings, covering a broad spectrum of ESG criteria. Understanding their distinct approaches to data, supplier engagement, and actionability is crucial for making the right investment for your sustainability and procurement teams.

At a Glance: DitchCarbon vs. EcoVadis

Data Accuracy and Methodology: Calculation vs. Rating

The most significant difference between DitchCarbon and EcoVadis lies in their fundamental approach to data. One is a calculation engine built for precision; the other is an assessment framework built for comparability.

DitchCarbon: A Unified Source for Emissions Data

DitchCarbon is designed to create a single source of truth for supplier emissions. Its methodology centres on aggregating and normalising data from multiple sources to achieve the highest possible accuracy for GHG calculations. The platform prioritises data quality in a clear hierarchy:

1. Primary Data: Direct emissions data collected from suppliers through a streamlined portal.
2. Public Disclosures: Verified data from sources like CDP, corporate sustainability reports, and other public commitments.
3. High-Quality Estimates: When primary data isn't available, it uses sophisticated modelling informed by industry, geography, and other factors, always ensuring the source and methodology are transparent.

The platform’s strength is its ability to manage this complex data landscape, showing provenance for every number and providing an audit-ready trail. This focus on verifiable, granular emissions data is what enables accurate hotspot analysis, credible forecasting, and the planning of specific reduction initiatives.

EcoVadis: A Holistic ESG Assessment

EcoVadis provides a holistic view of a supplier's sustainability management system. Its methodology is based on a comprehensive assessment tailored to a company’s size, industry, and location. Suppliers are asked to provide evidence across 21 criteria organised into four themes: Environment, Labour & Human Rights, Ethics, and Sustainable Procurement.

The ‘Environment’ theme does cover energy consumption and GHG emissions, but as one component of a much broader evaluation. The final output is not a specific CO2e figure for a product or service, but a score from 0-100 and a corresponding medal. This score is invaluable for benchmarking suppliers against industry peers and identifying overall ESG risks, but it doesn't provide the granular emissions data needed for detailed Scope 3 accounting or reduction modelling.

Scope 3 Focus vs. Broad ESG Coverage

Your organisation’s strategic priority-targeted decarbonisation or general ESG oversight-will heavily influence which platform is a better fit.

DitchCarbon: Deep Specialisation in Scope 3

DitchCarbon is built for purpose: to solve the Scope 3 challenge. The platform is optimised for Purchased Goods and Services (Category 1) and Capital Goods (Category 2), which represent the largest source of emissions for most companies. This specialisation means every feature is geared towards a single goal: turning complex procurement data into an accurate, actionable emissions footprint. From supplier engagement tools to reduction forecasting, the entire workflow is designed to support decarbonisation managers and sustainable procurement teams in their core mission.

EcoVadis: Comprehensive ESG Risk Management

EcoVadis offers a panoramic view of supplier risk. Its framework is powerful for organisations that need to report on or manage a wide array of non-financial risks, from modern slavery in the supply chain to anti-corruption policies. While this breadth is a major strength for compliance and corporate social responsibility teams, it means the depth on any single issue, like carbon emissions, is naturally less pronounced. An EcoVadis rating tells you if a supplier has a good environmental management system, but DitchCarbon tells you the specific emissions impact of buying from them.

Supplier Engagement and Workflow

How a platform interacts with your suppliers has a huge impact on the quality of data you receive and the health of your commercial relationships.

DitchCarbon: Engaging Without the Chaos

Recognising that suppliers are often overwhelmed with data requests, DitchCarbon’s approach is to “minimise new asks.” The platform first scours its vast database of public and existing disclosures to populate supplier profiles automatically. Only when gaps are identified does it trigger a request to the supplier through a simple, localised portal. This reduces supplier fatigue, boosts response rates, and accelerates the time to value. The goal is to get better data with less friction, empowering suppliers rather than just auditing them.

EcoVadis: The Standardised Assessment

The EcoVadis workflow is centred on the supplier completing its standardised assessment. This creates highly comparable, consistent data across the entire supply base. For large enterprises, this standardisation is a key benefit for benchmarking. However, the assessment can be a significant undertaking for suppliers, particularly small and medium-sized enterprises with limited resources. While EcoVadis provides support, the process is inherently more demanding than the targeted, gap-filling approach of DitchCarbon.

The Verdict: When to Choose Which Platform

Both DitchCarbon and EcoVadis are powerful platforms, but they serve different primary purposes. The right choice depends entirely on the job you need to do.

Choose DitchCarbon if:

• Your primary, urgent goal is to measure and reduce Scope 3 emissions.
• You need audit-ready, verifiable carbon data with clear provenance, not just a rating.
• You want to empower your procurement team to make climate-aware decisions before a purchase order is signed.
• You need to build a credible, data-driven pathway to your net-zero targets.

Choose EcoVadis if:

• Your objective is to assess, benchmark, and manage a broad range of supplier ESG risks.
• You need a standardised, comparable rating to use for supplier qualification and compliance.
• Your reporting needs cover a wide spectrum of sustainability topics beyond just climate.
• You are building a foundational supplier ESG due diligence programme.

Ultimately, the two systems can even be complementary. A company might use EcoVadis for broad-based ESG risk screening across thousands of suppliers, while deploying DitchCarbon for deep, collaborative decarbonisation work with its most strategic, high-impact suppliers.