English 
Spanish 
French 
By mid-2026, sustainability consultants are operating in a more technical and high-stakes role. Clients do not need generic ESG statements. They need practical support with climate disclosure, Scope 3 emissions, sustainability data, supply-chain transparency, greenwashing risk, investor expectations, and assurance-ready reporting.
The pressure is coming from regulators, investors, customers, lenders, and large companies that expect suppliers to provide credible sustainability information. Even organizations that are not directly covered by major disclosure rules may still face requirements through contracts, financing, procurement, or reputational risk.
The consultants who create the most value are those who turn complex sustainability expectations into clear, evidence-based action.
1. Regulatory Uncertainty
Regulatory change remains one of the biggest challenges for consultants in 2026. Companies may need to consider EU sustainability reporting requirements, the evolving CSRD and ESRS landscape after the EU Omnibus simplification process, IFRS/ISSB standards, California SB253 climate disclosure requirements, sector-specific rules, investor requests, and customer reporting requirements.
This means consultants must help clients understand not only what is legally required, but also what may still be expected by investors, lenders, customers, and global supply-chain partners.
A strong consultant should help clients build a regulatory applicability map that answers:
| Key question | Why it matters |
|---|---|
| Where does the company operate, sell, and source from? | Geography can trigger reporting or customer requirements. |
| Is the company part of a larger supply chain? | Large customers may request emissions, sourcing, labor, or product data. |
| Does the company report to investors or lenders? | Capital providers may expect climate-risk and transition-plan information. |
| What data already exists? | Early gaps can delay reporting and increase assurance risk. |
| Who owns each data point internally? | Reporting requires finance, legal, procurement, HR, operations, and sustainability teams. |
Consultants should separate legal obligations from voluntary frameworks, investor expectations, and customer requests. This prevents confusion and helps clients prioritize what matters most.
2. Weak Sustainability Data
Many companies still rely on spreadsheets, emails, supplier questionnaires, estimates, and manual calculations. This creates risk when sustainability information is used in public reports, investor communications, product claims, or regulatory submissions.
Consultants should help clients improve four areas:
| Area | Consultant focus |
| Ownership | Assign a responsible person for each metric. |
| Controls | Document how data is collected, checked, approved, and updated. |
| Methods | Use consistent boundaries, emissions factors, assumptions, and reporting periods. |
| Evidence | Keep records that support every reported figure and public claim. |
A sustainability data audit is often the best starting point. It identifies reliable data, estimated data, missing information, and evidence gaps before reporting deadlines create pressure.
3. Scope 3 Emissions
Scope 3 emissions remain difficult because they sit across the value chain, often outside the company’s direct control. They may include purchased goods, logistics, business travel, employee commuting, product use, disposal, leased assets, and investments.
Consultants should begin with materiality and prioritization rather than trying to measure everything perfectly in year one.
| Business type | Likely Scope 3 priorities |
| Retailer | Purchased goods, packaging, logistics, product disposal |
| Manufacturer | Materials, upstream transport, product use |
| Financial institution | Financed emissions and portfolio climate exposure |
| Professional services firm | Business travel, purchased services, commuting |
| Food company | Agricultural inputs, land use, cold-chain logistics, waste |
Early calculations may use estimates or industry averages, but assumptions must be disclosed clearly. The goal should be continuous improvement: move from spend-based estimates to activity data, then to supplier-specific data where possible.
4. Greenwashing Risk
Greenwashing risk is increasing as companies face pressure to communicate sustainability progress. In 2026, this risk is especially important because environmental claims face closer scrutiny from regulators, customers, competitors, and civil society.
Broad claims such as “green,” “eco-friendly,” “carbon neutral,” “net zero,” or “sustainable” should not be used without evidence. In the EU, rules on generic environmental claims and offset-based climate claims are becoming stricter from September 2026, which makes claim substantiation even more important.
Before publication, consultants should ask:
| Claim review question | Why it matters |
| Is the claim specific? | Vague claims are harder to defend. |
| Is there evidence? | Claims need data, certification, or documentation. |
| Is the boundary clear? | Readers must know whether the claim applies to a product, site, activity, or company. |
| Are limitations disclosed? | Important exclusions should not be hidden. |
| Could a reasonable customer misunderstand it? | Claims must not create a misleading impression. |
Instead of saying a product is “eco-friendly,” a stronger claim would be:
“This product contains 40% recycled aluminum by weight, based on supplier documentation for the 2025 production year.”
That version is specific, measurable, time-bound, and easier to verify.
5. Supply-Chain Pressure
Supply-chain transparency is now a commercial issue, not only a reporting issue. Large companies increasingly ask suppliers for emissions data, materials information, labor practices, human-rights risk, certifications, product origin, and climate exposure.
Small and mid-sized companies may therefore face sustainability requirements even when regulations do not apply to them directly.
Consultants can help by creating supplier data programs that include questionnaires, risk ranking, contract language, documentation requests, and improvement plans. The goal is not to collect every data point immediately. The goal is to identify the most material risks and build a repeatable process.
6. Sustainability and Financial Planning
Sustainability work is most valuable when it supports business decisions. Climate risk, energy use, emissions, regulation, and stakeholder expectations can affect cost, revenue, insurance, procurement, capital planning, and long-term strategy.
| Sustainability issue | Business impact |
| Energy efficiency | Lower costs and reduced emissions |
| Supplier risk | Stronger procurement and fewer disruptions |
| Climate risk | Better asset planning and resilience |
| Product claims | Lower legal and reputational risk |
| Emissions data | Stronger investor and customer communication |
| Reporting readiness | Fewer last-minute compliance costs |
Consultants should help clients move from simply reporting sustainability to actively managing it.
7. Technology and Reporting Tools
Software can help track emissions, manage workflows, collect supplier data, and prepare dashboards. But technology does not fix weak processes.
Before selecting a platform, consultants should help clients define their reporting needs, data sources, internal responsibilities, approval workflows, evidence requirements, and assurance expectations.
The best tool is the one that fits the client’s reporting obligations, maturity level, data quality, and internal capacity.
Consultant Checklist for 2026
A strong sustainability consultant should help clients:
- Map regulatory, investor, and customer requirements.
- Audit sustainability data quality and ownership.
- Identify material Scope 3 emissions categories.
- Review sustainability claims for evidence and clarity.
- Build supplier data and risk-management processes.
- Connect sustainability issues to financial planning.
- Create a roadmap with owners, deadlines, controls, and evidence.
- Recommend technology only after the reporting process is clear.
Conclusion
In 2026, sustainability consulting is not just about preparing ESG reports. It is about helping organizations build credible systems, reduce risk, improve data quality, respond to stakeholders, and make better business decisions.
The consultants who stand out will combine technical knowledge with practical implementation. They will help clients understand what applies, what matters most, what evidence is needed, and how sustainability can support long-term performance.
Professional Development Note
Professionals advising clients on ESG, climate disclosure, sustainability reporting, Scope 3 emissions, greenwashing risk, and supply-chain transparency may benefit from structured training.
Programs such as the Consultants Edition: Certified Sustainability ESG Practitioner Program 2026 can help consultants strengthen technical knowledge, improve advisory skills, and apply sustainability requirements in a practical business context.
Before choosing a program, professionals should review the curriculum, trainer credentials, case studies, certification requirements, and alignment with recognized sustainability reporting frameworks.
