Scope 3 emissions, the indirect emissions across your value chain, are often the largest part of a company's carbon footprint and the hardest to measure, because the data sits with many departments, suppliers and partners. GreenCo's Scope 3 emissions advisory helps Singapore companies build a reliable inventory, disclose it with confidence and find practical reduction opportunities.
Why Scope 3 Matters in Singapore
- STI constituents must report Scope 3 emissions from FY2026 under SGX's ISSB-based climate reporting requirements.
- Other listed issuers and large non-listed companies report Scope 3 voluntarily for now, but investors and lenders increasingly expect it, and IFRS S2 includes Scope 3 in its metrics.
- Suppliers to multinational and listed customers are asked for emissions data, because their figures form part of their customers' Scope 3 inventories.
- Decarbonisation planning – for many companies most reduction opportunities, and most transition risk, sit in the value chain.
The 15 Scope 3 Categories
Upstream (1–8): purchased goods and services; capital goods; fuel- and energy-related activities; upstream transportation and distribution; waste generated in operations; business travel; employee commuting; upstream leased assets.
Downstream (9–15): downstream transportation and distribution; processing of sold products; use of sold products; end-of-life treatment of sold products; downstream leased assets; franchises; investments.
Not every category applies to every business. What matters is a documented screening that explains which categories are relevant and why.
Our Four-Step Scope 3 Approach
- Screening and planning – identify relevant categories, set organisational and value chain boundaries, and prioritise the most material sources.
- Data collection and supplier engagement – structured templates for internal teams and suppliers, with coordinated information requests and data-quality improvement.
- Calculation and analysis – GHG Protocol methods using activity data, emission factors and documented estimates where primary data is not available, plus hotspot analysis.
- Reporting and improvement – disclosure for your sustainability report, a data-quality assessment and a plan to increase primary data coverage year on year.
What You Receive
- Scope 3 screening results and boundary documentation.
- Category-level emissions with methods, emission factor sources and assumptions recorded.
- Emission hotspots and data-quality evaluation.
- Disclosure wording for SGX, IFRS S2 and GRI reporting.
- Assurance-ready workpapers and a roadmap for supplier engagement and decarbonisation.
Related reading: IFRS S2 Climate Reporting in Singapore · How to Evaluate Scope 3 Disclosure Quality · Decarbonisation Roadmap and Science-Based Targets
Why Appoint GreenCo for International Sustainability and ESG Advisory?
Since 2016, GreenCo has been trusted by public and private companies and multinational companies for reliable, standards-based ESG and sustainability advisory. We have supported more than 80 listed companies in Hong Kong, Singapore, Mainland China and South Korea, alongside private companies, IPO candidates and multinational groups.
Your sustainability report is usually reviewed by investors, international customers and other stakeholders, and it is increasingly one of the criteria they use to decide whether to invest in, or do business with, your company. A team with solid international exposure makes the difference.
- A strong team with outstanding international credentials – consultants with accounting, investment, risk and sustainability qualifications, working across Singapore, Hong Kong and Shanghai.
- Senior members closely monitor every ESG project – your concerns are addressed directly by experienced professionals, from kick-off to sign-off.
- International standards expertise – GRI, ISSB (IFRS S1 and S2), SGX and HKEX listing rules, the GHG Protocol, ISO 14064 and ISAE 3000.
- All-round, one-stop advisory – strategy, materiality, reporting, GHG accounting, climate risk, ESG ratings, training and assurance under one roof.
- Finance-grade rigour – our team combines accounting, investment and risk qualifications, so your ESG numbers stand up to auditors, regulators and investors.
- Professional judgement, with AI as a tool – we use AI and digital tools for efficiency, but every conclusion is reviewed and owned by qualified consultants.
- Assurance capability – assurance services performed by a CPA (Practising) in accordance with ISAE 3000.
Our Team's Professional Credentials
- Fellow Certified Public Accountant (FCPA)
- Chartered Financial Analyst (CFA) – CFA Institute
- Financial Risk Manager (FRM) – Global Association of Risk Professionals (GARP)
- Certified ESG Analyst (CESGA)
- Sustainable Investing Certificate – CFA Institute
- GRI Certified Professional
- Practitioner Member – Institute of Sustainability and Environmental Professionals (ISEP)
- GRI Certified Sustainability Professional – Global Reporting Initiative (GRI)