EcoVadis Q&A: Tracking Scope Emissions & Climate Commitments

Why supply chain emissions dwarf your direct carbon footprint

Most UK businesses focus their carbon reduction efforts on their own operations. They install LED lighting, switch energy suppliers, and upgrade heating systems. These actions matter. However, they miss the bigger picture.

For many companies, supply chain emissions exceed direct operational emissions by a factor of twenty or more. A retailer might produce 1,000 tonnes of carbon from its stores and offices. Meanwhile, the products it sells and the suppliers it works with generate 21,000 tonnes.

This reality forces a fundamental question. How can any business credibly claim progress on net zero while ignoring 95% of its carbon footprint? The answer lies in supply chain engagement, and platforms like EcoVadis have emerged as critical infrastructure for this work.

EcoVadis operates as a sustainability ratings platform serving over 55,000 companies worldwide. It assesses environmental, social, and ethical performance across four areas: environment, labour and human rights, ethics, and sustainable procurement. Within the environment category, carbon emissions receive particular focus.

The platform addresses a practical problem. Businesses need reliable data from their suppliers to understand Scope 3 emissions. Scope 3 covers all indirect emissions in the value chain, from purchased goods to transport and distribution. Gathering this information manually proves nearly impossible at scale.

How the EcoVadis assessment system works in practice

EcoVadis launched in 2007 as a corporate social responsibility assessment tool. It has since evolved into a global standard for sustainability intelligence. The platform rates companies against 21 criteria tailored to their industry size and risk profile.

The assessment covers energy use, water consumption, waste management, and greenhouse gas emissions. It also examines working conditions, business ethics, and whether companies apply sustainability standards to their own suppliers.

Businesses receive a scorecard showing their performance against industry peers. They can identify weaknesses and track improvement over time. The system requires annual reassessment, which creates ongoing accountability.

In 2023, EcoVadis partnered with management consultancy BCG to analyze data from all 55,000 companies on its platform. The research revealed that businesses actively engaging their suppliers were nine times more likely to meet their 2030 emissions reduction targets compared to those working in isolation.

This finding matters for UK small and medium enterprises. You cannot achieve meaningful carbon reduction without involving your supply chain. Furthermore, you increasingly face pressure from larger customers to provide carbon data yourself.

EcoVadis has developed tools specifically for this challenge. Its Carbon Action Manager integrates with carbon accounting platforms to provide supplier-specific emissions data. This moves beyond crude spend-based estimates to actual reported figures.

The platform also offers Carbon Ratings. These provide suppliers with scorecards, benchmarking data, and guidance on building internal carbon management capabilities. Trading partners can invite suppliers to complete assessments, creating a cascading effect through supply networks.

The gap between measurement and meaningful action

Current supplier engagement reveals a significant maturity gap. Only 8% of suppliers on the EcoVadis platform currently report product carbon footprints. This creates a practical barrier for businesses trying to calculate Scope 3 emissions accurately.

Companies typically start with spend-based calculations. You estimate emissions by multiplying what you spent with each supplier by industry average emission factors. This method provides a rough baseline but lacks precision.

The next step involves activity-based calculations. You use actual quantities purchased rather than financial spend. A manufacturer might calculate emissions from the tonnes of steel purchased rather than the pounds spent on steel.

Supplier-specific data represents the most accurate approach. Your supplier reports their actual emissions allocated to the products you purchased. However, obtaining this data requires suppliers to have carbon accounting systems in place.

EcoVadis research suggests focusing initially on top suppliers yields the best results. For most businesses, engaging with 200 key suppliers can address 50% of the total supply chain footprint. Kimberly-Clark used this approach in a pilot program referenced in EcoVadis case studies.

The platform provides infrastructure to support this progression. Companies can send carbon data requests through the system. Suppliers receive guidance on what to measure and how to report it. The resulting data feeds into carbon accounting platforms, identifying the highest-impact reduction opportunities.

Technology integration has accelerated recently. In 2024, EcoVadis integrated with carbon accounting provider Normative. This partnership allows primary supplier data to flow directly into emissions calculations, reducing manual data handling and improving accuracy.

Regulatory pressure transforms carbon reporting from voluntary to mandatory

European and international regulations are changing the compliance landscape. The Corporate Sustainability Reporting Directive requires large EU companies and their UK suppliers to report detailed Scope 3 emissions. Similar rules are emerging elsewhere.

These regulations demand supplier-specific data rather than estimates. Consequently, businesses face mounting requests from customers for carbon information. Those unable to provide credible data risk losing contracts.

This dynamic creates both challenge and opportunity for UK SMEs. If you supply larger corporations, you will receive carbon reporting requests. However, if you build reporting capabilities now, you gain competitive advantage over businesses that delay.

EcoVadis positions itself as infrastructure for this transition. The platform’s ratings align with reporting frameworks like the Global Reporting Initiative and CDP. Companies completing EcoVadis assessments generate data usable for multiple compliance requirements.

The system also supports science-based target setting. Science-based targets align emissions reductions with climate science, typically requiring 50% cuts by 2030 for 1.5-degree pathways. EcoVadis tools help companies set credible targets and track progress against them.

Energy management receives particular attention. The platform encourages ISO 50001 certification for systematic energy management. It also tracks renewable energy procurement, recognizing companies that switch to renewable electricity or sign power purchase agreements.

Commercial realities behind supply chain decarbonization

Supply chain carbon reduction offers genuine cost savings alongside compliance benefits. Energy efficiency improvements reduce operating costs. A warehouse switching to LED lighting cuts electricity bills while lowering emissions. Similar savings apply to heating, cooling, and process improvements.

Renewable energy procurement increasingly makes financial sense. Power purchase agreements can lock in electricity prices below grid rates while providing carbon-free power. Corporate renewable energy buyers now represent a significant market segment.

Product redesign creates additional opportunities. Reducing material use, switching to lower-carbon materials, or designing for recyclability all cut emissions. These changes often reduce costs or create new market opportunities.

However, challenges remain. Smaller suppliers often lack resources for carbon accounting. Data collection across complex supply chains proves time-consuming. Some emissions sources prove difficult to measure or address.

EcoVadis addresses these barriers through capacity building. Suppliers invited to complete assessments receive guidance materials and best practice examples. The platform shares learnings from high-performing companies, helping others understand what good looks like.

The BCG research highlighted engagement as the critical success factor. Companies that actively work with suppliers, share knowledge, and provide support achieve significantly better outcomes. Those that simply demand data without offering assistance see limited progress.

This finding aligns with broader supply chain management principles. Collaboration beats coercion. Businesses that treat suppliers as partners rather than compliance problems build more resilient, lower-carbon supply chains.

Eight essential facts about supply chain carbon management

• Scope 3 emissions from supply chains typically represent 70% to 90% of a company’s total carbon footprint, making supplier engagement essential for meeting reduction targets.
• Businesses that actively engage suppliers are nine times more likely to achieve their 2030 emissions goals, according to 2023 research covering 55,000 companies.
• Only 8% of suppliers currently report product carbon footprints, creating a significant data gap that businesses must address through systematic engagement.
• Focusing on the top 200 suppliers typically covers 50% of most companies’ supply chain emissions, allowing prioritized engagement efforts.
• The Corporate Sustainability Reporting Directive and similar regulations now require detailed Scope 3 reporting, transforming carbon data from voluntary to mandatory.
• Energy efficiency improvements like LED lighting and renewable energy procurement deliver cost savings while reducing emissions across supply chains.
• EcoVadis assesses companies against 21 sustainability criteria tailored to industry and size, with annual reassessments ensuring continued progress.
• The platform’s Carbon Action Manager integrates with accounting systems to provide supplier-specific data rather than crude spend-based estimates.

What UK businesses should consider about supplier engagement

Supply chain decarbonization requires systematic approaches rather than ad hoc initiatives. Businesses need clear processes for collecting supplier data, setting expectations, and tracking progress. Treating this work as a project with defined milestones improves outcomes.

Starting with measurement establishes the baseline. Even rough spend-based calculations reveal which supplier categories contribute most to your footprint. This information guides where to focus engagement efforts.

Prioritization prevents overwhelm. Identify your highest-emission suppliers and concentrate initial efforts there. A smaller number of engaged suppliers beats a larger number of ignored requests.

Communication matters as much as methodology. Explain to suppliers why you need carbon data and how you will use it. Share your own targets and progress. Frame the request as collaboration rather than audit.

Providing support increases response rates. Many suppliers lack carbon accounting expertise. Offering guidance, training, or access to tools helps them develop capabilities that benefit their entire customer base.

Platforms like EcoVadis reduce the burden of this work. Rather than creating proprietary assessment systems, businesses can use established infrastructure. This standardization benefits suppliers who receive consistent requests across multiple customers.

Consider linking sustainability performance to commercial decisions. Some businesses now include carbon criteria in supplier selection and performance reviews. Others offer preferential terms to suppliers demonstrating strong environmental performance. These approaches accelerate progress beyond data collection.

Public sector suppliers face specific requirements. Procurement Policy Note 06/21 requires carbon reduction plans from suppliers bidding on large government contracts. Our net zero program helps businesses develop compliant carbon reduction plans meeting these requirements.

Training builds internal capability. Teams need to understand carbon accounting basics, regulatory requirements, and engagement best practices. The SBS Academy offers training on Scope 3 emissions and supply chain sustainability.

Documentation supports compliance and improvement. Maintaining records of supplier engagement, data collected, and actions taken demonstrates due diligence. It also reveals what approaches work best for your supply base.

Where to find additional guidance and resources

The UK government provides extensive resources on business carbon reduction. The Net Zero Strategy outlines policy direction and support programs for businesses.

The Government Conversion Factors for Company Reporting offer emission factors for calculating carbon footprints. These factors update annually and cover most business activities.

The Greenhouse Gas Protocol provides the international standard for corporate carbon accounting. Its Scope 3 guidance explains calculation methods and reporting requirements in detail.

Industry bodies offer sector-specific resources. The Institute of Environmental Management and Assessment provides professional development and guidance on environmental management systems. The Chartered Institute of Procurement and Supply offers resources on sustainable procurement practices.

For businesses requiring support with carbon reporting, supply chain engagement, or compliance with customer requirements, our compliance services cover ESG reporting and regulatory requirements affecting UK SMEs.