EcoVadis & BCG: The US$500bn Scope 3 Emissions Risk

Upstream Scope 3 emissions, the indirect emissions that occur across a company’s value chain, remain one of the largest blind spots in corporate sustainability. According to the EcoVadis and Boston Consulting Group (BCG) Carbon Action Report, these emissions are on average 21 times greater than a company’s direct footprint. Yet, 90% of businesses still lack targets to reduce them.

For many, this unmanaged risk could soon become an untapped opportunity. As investors, regulators and supply chains demand transparency, companies that engage their suppliers are proving to be nine times more likely to achieve Scope 3 targets. The findings build a compelling business case for action.

Pierre-François Thaler, Co-CEO and Co-Founder of EcoVadis, believes Scope 3 is where the climate and business agendas truly intersect. “When buyers spend trillions of dollars a year, redirecting even a small portion toward sustainable suppliers can transform entire industries,” he says.

EcoVadis has scaled its sustainability ratings platform to assess more than five million supplier profiles, supporting more than 1,500 global procurement organisations. These network effects now influence approximately US$2.38tn in annual corporate spend.

Diana Dimitrova, Managing Director and Partner at BCG, agrees that the financial stakes are impossible to ignore. “The liability sitting around unmanaged upstream Scope 3 is half a trillion dollars,” she says. “But the flip side is that many actions in the supply chain deliver a positive three- to six-times return on investment.”

Business leaders, she explains, are beginning to see decarbonisation not just as a responsibility, but as a route to resilience.

Why upstream Scope 3 emissions remain the blind spot

Calculating and managing Scope 3 emissions is inherently complex. Pierre-François notes that small and mid-sized firms are also less likely to report or act on Scope 3. “When you’re a small manufacturer supplying a global brand, you may not have the systems or expertise to measure and manage emissions,” he says. “But that is changing fast.”

Dexter Galvin, Climate Ambassador at EcoVadis, believes misconceptions still slow progress. “Many companies say they need to get their own house in order before engaging suppliers,” Dexter explains. “But that idea is inherently wrong. Supply chains are where the biggest opportunities remain.”

He points to abatement cost analysis, the technical process of assessing the cost-per-tonne of avoided emissions, as a critical insight from the research. “There are huge payback opportunities in suppliers that haven’t yet tackled basic efficiency projects,” Dexter adds.

Pierre-François offers a practical example from a pharmaceutical client: “The company’s factories were already optimised for energy. But the suppliers were just starting out. Each dollar invested in supplier energy management delivered three dollars of value.”

From unmanaged risk to economic opportunity

While regulatory reporting requirements are tightening, the risk exposure is already vast. The report estimates that unmanaged upstream Scope 3 emissions could cost corporations more than US$500bn annually by 2030 through disruption, pricing and liability.

Diana emphasises the importance of quantification. “You can’t manage what you haven’t measured,” she says. “Once companies identify where the exposure lies, they can act on the most cost-effective reductions first.”

Investors also have a growing role in accelerating accountability. Dexter highlights the financial sector’s influence: “There are still trillions of dollars aligned with the principles of the International Sustainability Standards Board (ISSB). Investors now understand that supply chain emissions are where the iceberg lies.”

Pierre-François agrees that the conversation in boardrooms has evolved. “Boards want both quantitative data and salient stories,” he says. “When a competitor’s factory floods or a major customer demands disclosure, that narrative becomes very persuasive.”

Diana adds that regulation is reinforcing this trend. “Countries with mandatory disclosure naturally see more transparency,” she explains. “Policy creates measurement, and measurement creates action.”

Engaging the supply chain for real impact

The Carbon Action Report highlights that those companies which engage directly with their suppliers are nine times more likely to meet Scope 3 targets – yet supplier engagement remains low.

According to Dexter, the first step is surprisingly simple. “Ask the question,” he says. “If your biggest customer demands emission data, that’s motivation enough to act.”

From there, meaningful engagement requires structure. Establishing science-based targets (SBTs) helps companies clarify their expectations and timelines for suppliers. Nearly 9,000 companies have now joined the Science-Based Targets initiative, creating a network effect of cascading accountability.

To sustain progress, Dexter recommends internal investment. “You need teams in place,” he says. “You need people managing data, supporting suppliers and ensuring resources match ambition.”

Pierre-François explains that the most effective multinationals embed climate criteria into procurement. “They treat sustainability like quality,” he says. “Preferred suppliers must have strong ESG ratings or SBT-aligned goals. Every tender now includes a sustainability weighting.”

The approach proves powerful. When a supplier loses a major contract on sustainability grounds, it often triggers rapid organisational change. “They’ll go straight to their CEO and say, ‘we need to fix this to stay competitive’,” Pierre-François notes.

Diana illustrates how collaboration continues well beyond a contract award. “Suppliers and buyers meet regularly to share data on product-level emissions and manufacturing efficiency,” she explains. “That’s why engagement drives results – it becomes a live, strategic partnership.”

Momentum gathers behind climate transition plans

Many leading firms are already focusing on Scope 3 as they near their net zero milestones. But time is short.

Diana warns that the global system sits at a turning point. “We have a narrow window to keep global temperature rise within 1.5°C,” she says. “The next five-year business cycle will decide whether we stay on track.”

Dexter underscores the stakes with hard numbers. “We’ve already experienced US$3.6tn in physical losses from climate-related events between 2020 and 2025,” he says. “And the Achilles’ heel is always the supply chain.”

Companies unprepared for climate shocks risk operational and financial disruption. Without supplier alignment on decarbonisation, emissions data and resilience planning, the damage can cascade through entire sectors.

As Dexter puts it: “If you’re not engaging your suppliers, you’re not managing your risk.”

How technology turns data into decarbonisation

Technology now offers a route to manage Scope 3 sustainably and at scale. AI and data automation, once peripheral tools, are becoming central to corporate climate strategies.

EcoVadis has integrated AI into its ratings platform to expand and refine supplier data coverage. “We use AI to scan millions of supplier websites daily, tracking new sustainability commitments and performance data,” Pierre-François explains. “It’s impossible to do this manually.”

The company now combines AI-driven analytics with human assessment, giving clients richer insight into supplier performance and data reliability. “We don’t just score practices,” Pierre-François says. “AI also scores the quality of the data itself, ensuring accuracy across global supply chains.”

This accessibility is transforming decision-making. “We’re developing AI assistants that can answer practical questions in seconds,” Pierre-François reveals. “An employee can ask, ‘What should I know before meeting this logistics supplier?’ and receive tailored sustainability insights.”

For Dexter, technology represents both the challenge and the solution. “Climate action is a problem of waste and inefficiency,” he says. “If we deploy AI deliberately – to apply pressure where it matters – it can accelerate change instead of amplifying consumption.”

He sees new digital ecosystems, such as EcoVadis’ supplier network, as essential infrastructure for a low-carbon economy. “Technology lets us strip waste from the system and deliver climate action faster,” Dexter continues. “We just have to use it responsibly.”

Across every sector, the understanding of Scope 3 is evolving. What once appeared an unmanageable problem now looks like the next great frontier for business efficiency and resilience.