Scope 3 emissions have been the sustainability world’s most stubborn challenge for years. They’re indirect, they’re sprawling, and they sit largely outside a company’s direct control. Yet in 2026, the pressure to address them has never been stronger. Regulatory frameworks are tightening, stakeholders are asking harder questions, and “we’re working on it” is no longer a satisfying answer. So what are companies actually doing to tackle scope 3 emissions this year, and what’s working?
This post breaks down the current landscape: why scope 3 remains so difficult, what’s driving companies to act, and the practical approaches that are gaining traction across industries.
Why scope 3 remains the hardest emissions category to address
Scope 3 covers all indirect emissions that occur across a company’s value chain, both upstream and downstream. That includes everything from the raw materials suppliers extract to the energy customers use when running a product. Unlike scope 1 (direct emissions) and scope 2 (purchased energy), scope 3 emissions don’t happen on company premises and can’t be managed by flipping a switch or signing a renewable energy contract.
For most companies, scope 3 accounts for the vast majority of their total carbon footprint, often well above 70%. The challenge is structural: you’re dependent on hundreds or thousands of suppliers, logistics partners, and end users, each with their own systems, incentives, and levels of emissions maturity. Collecting accurate data from that web of relationships is genuinely hard. And even when the data exists, influencing behavior across a supply chain requires relationships, resources, and patience that many organizations are still building.
That complexity is exactly why scope 3 has lagged behind scopes 1 and 2 in corporate climate action. But that’s starting to change.
Regulatory and reporting pressure driving action in 2026
One of the biggest forces pushing companies to get serious about scope 3 emissions in 2026 is regulation. The EU’s Corporate Sustainability Reporting Directive (CSRD) now requires large companies to report on material scope 3 categories as part of their sustainability disclosures. For many organizations, this isn’t optional anymore; it’s a compliance requirement.
CDP reporting has also intensified the focus on supply chain emissions. Companies that disclose through CDP face growing expectations to report scope 3 data with increasing accuracy and completeness. And for those aligned with the Science Based Targets initiative (SBTi), scope 3 targets are a core part of what it means to have a credible net-zero pathway. SBTi requires companies to address scope 3 emissions when they represent a significant portion of total emissions, which for most businesses, they do.
What’s shifted in 2026 is that these reporting requirements are no longer on the horizon; they’re here. Companies that spent previous years preparing are now in execution mode. Those that didn’t are scrambling to catch up, which is creating real urgency around scope 3 strategy and measurement.
How leading companies are reducing supply chain emissions
There’s no single playbook for reducing supply chain emissions, but a few approaches are proving effective across different sectors. Leading companies are combining supplier engagement, procurement decisions, and collaborative industry initiatives to make meaningful progress.
- Supplier engagement programs: Companies are working directly with key suppliers to help them measure and reduce their own emissions. This often involves sharing tools, providing training, or co-funding decarbonization projects. The goal is to build supplier capability rather than just audit performance.
- Procurement criteria tied to emissions: Sustainability performance is increasingly factored into purchasing decisions. Some companies have introduced minimum requirements for suppliers to disclose emissions data or set their own reduction targets before being awarded contracts.
- Collaborative industry initiatives: Sector-wide coalitions allow competing companies to share the cost and complexity of supplier engagement. These initiatives are particularly valuable in industries with fragmented supply chains where no single buyer has enough leverage to drive change alone.
- Product design changes: Reducing the carbon intensity of products at the design stage by choosing lower-emission materials or extending product lifespans can significantly cut downstream scope 3 emissions before they ever occur.
What ties these approaches together is the shift from treating scope 3 as a reporting exercise to treating it as a genuine operational priority. The companies making the most progress are embedding emissions considerations into procurement, product development, and supplier relationships rather than managing them separately as a sustainability team function. That integration is what turns good intentions into actual reductions.
Data collection and measurement: the foundation of progress
Before any reduction strategy can work, companies need to know where their scope 3 emissions actually come from. That sounds obvious, but building a reliable emissions inventory across a complex value chain is one of the most technically demanding parts of the whole process.
Many companies start with spend-based estimates, using financial data as a proxy for emissions. It’s a reasonable starting point, but it has real limitations in accuracy. The more meaningful approach is activity-based data: actual quantities of materials purchased, distances traveled, and energy used by suppliers. Getting there requires either requesting data directly from suppliers or using industry-specific emission factors that reflect real-world conditions.
Data quality varies enormously across supply chains. Tier-one suppliers may have solid emissions data; tier-two and tier-three suppliers often don’t. This is where technology is helping, with digital supplier platforms and automated data collection tools making it easier to gather, validate, and track emissions data at scale. But technology alone doesn’t solve the problem. It still takes clear processes, supplier relationships built on trust, and internal expertise to turn raw data into something actionable.
Good measurement isn’t just about compliance; it’s what tells you where to focus your reduction efforts. Without it, you’re essentially guessing.
The role of sustainability experts in scope 3 strategy
Given the complexity of scope 3 work, it’s no surprise that many companies are bringing in external expertise to help. But it’s worth being specific about what kind of expertise actually helps here, because sustainability is a broad field and the specialists who work on scope 3 are quite different from those focused on, say, CSRD reporting or EU Taxonomy alignment.
Scope 3 emissions reduction consultants typically focus on value chain analysis, supplier engagement strategy, and emissions accounting methodology. They help companies identify material scope 3 categories, design credible reduction pathways, and build the internal processes needed to sustain progress over time. LCA (life cycle assessment) specialists bring a different but complementary skill set, analyzing the full environmental impact of products or processes across their entire lifecycle, which is particularly useful for companies looking to redesign products to reduce downstream emissions.
The right expert depends entirely on where a company is in its scope 3 journey. An organization just starting to build its emissions inventory has different needs than one that already has data and is trying to set SBTi-aligned targets. Matching the right specialist to the specific challenge makes a significant difference in how quickly and effectively progress happens.
Ready to move faster on scope 3?
Scope 3 is genuinely hard, and there’s no shortcut to getting it right. But the companies making real progress in 2026 share a common thread: they’ve stopped treating it as a future problem and started building the strategies, data systems, and partnerships needed to act now.
If your organization is at any stage of that journey and could use specialized support, we’d love to help. At Dazzle, we match companies with pre-screened sustainability freelancers who specialize in exactly the kind of work scope 3 demands, whether that’s emissions accounting, supplier engagement, or reduction strategy. You can start working with the right expert within 48 hours, without the long lead times and overhead of traditional consultancies. Reach out to our team and let’s find the right fit for your challenge.
If you’re interested in learning more, contact our team of experts today.
