Businesses today face growing pressure to reduce their environmental impact. With mid-market companies responsible for a significant portion of global emissions, decarbonization certifications have become a key tool for demonstrating climate credibility to investors, customers, and regulators.

But the landscape of certifications is complex. Some focus on carbon offsetting, others on emissions measurement, and others on supply chain practices. This guide helps mid-market companies understand which certifications are most relevant and how to approach them strategically.

Why certifications matter for mid-market companies

Mid-market companies increasingly face sustainability requirements from multiple directions:

• Enterprise customers demanding supply chain ESG data (often via EcoVadis, CDP, or similar platforms)
• Regulatory requirements such as CSRD for companies in scope
• Investor and lender ESG due diligence
• Procurement gates at larger companies requiring sustainability credentials

Certifications can help meet these demands, but they work best when grounded in real emissions measurement rather than used as a substitute for it.

Key decarbonization certifications for mid-market companies

Science Based Targets initiative (SBTi)

SBTi is the gold standard for emissions reduction commitments. Companies set targets aligned with a 1.5°C or 2°C pathway and have their targets validated by the SBTi. It requires a credible Scope 1, 2, and 3 emissions baseline and a roadmap to reduce emissions in line with climate science.

SBTi is highly credible with investors, enterprise buyers, and regulators. It does not involve offsetting—it's about real reduction commitments. For mid-market companies, the SMB (Small and Medium-Sized Business) pathway offers a simplified target-setting process.

EcoVadis

EcoVadis is a sustainability performance assessment platform widely used in procurement. Companies complete a questionnaire covering environment, labor practices, ethics, and sustainable procurement, and receive a scored medal rating. Many enterprise buyers require EcoVadis participation as a supplier qualification criterion.

EcoVadis is not a certification in the traditional sense—it’s an assessment—but it functions as one in procurement contexts. It is increasingly aligned with CSRD requirements, making CSRD preparation and EcoVadis improvement mutually reinforcing activities.

CDP (formerly Carbon Disclosure Project)

CDP operates a global disclosure system for companies to report their environmental data. Companies receive a scored rating (from D to A) based on the completeness and quality of their disclosure. Many institutional investors use CDP scores as a screening criterion.

CDP participation requires detailed emissions data across Scope 1, 2, and 3 and is aligned with TCFD and ESRS E1 requirements. Mid-market companies can participate even without being CSRD-regulated.

ISO 14001 (Environmental Management Systems)

ISO 14001 certifies that a company has implemented an environmental management system (EMS) meeting international standards. It focuses on processes and governance rather than specific emissions targets and is valuable for demonstrating structured environmental management to customers and regulators.

TÜV Rheinland GHG Protocol certification

Some companies pursue third-party verification of their greenhouse gas inventory under the GHG Protocol. This is distinct from offsetting—it certifies that your measurement methodology meets international standards. Coolset's carbon accounting methodology is TÜV Rheinland-certified, which supports this verification for customers using the platform.

The role of emissions measurement

Every credible certification starts with accurate emissions measurement. Certifications that don't require a verified emissions baseline—such as some simple offsetting schemes—are increasingly scrutinized and offer less credibility than measurement-based approaches.

Before pursuing certifications, establish your Scope 1, 2, and 3 baseline. This is the foundation that makes everything else credible. Our guide to measuring your company's carbon footprint covers the key steps.

Strategic approach for mid-market companies

Rather than pursuing certifications for their own sake, approach them as milestones in your decarbonization journey:

1. Measure your emissions baseline (Scope 1, 2, 3)
2. Identify which certifications your key customers or investors require
3. Prioritize SBTi for emissions credibility, EcoVadis for procurement, CDP for investors
4. Use certifications to drive internal accountability and supplier engagement

For companies navigating supply chain sustainability, see our guide to 9 decarbonization methods to reduce supply chain emissions.

Coolset supports the emissions measurement and reporting foundation that makes all of these certifications achievable. Book a demo to see how the platform works.