Singapore expands emissions registry before scope 3 reporting

New metrics target services, ICT and industrial emissions.

The Singapore Emission Factors Registry (SEFR) was expanded ahead of mandatory Scope 3 emissions reporting for Straits Times Index companies from fiscal year 2026, according to the Singapore Business Federation (SBF).

The update adds 94 new emission factors (EF), bringing the total to 319. The registry now covers all Scope 1 and Scope 2 emissions, as well as four of 15 Scope 3 categories, and serves as the national reference point for converting business activity data into emissions data.

Three new EFs were developed for cleaning, security and professional services. These services were prioritised following public consultations as they commonly appear in corporate supply chains and Scope 3 calculations.

The service-sector factors were developed using the Lifecycle Environmental Assessment Framework established by the Agency for Science, Technology and Research. The framework applies life cycle assessment principles and aligns with ISO 14067 and the Partnership for Carbon Transparency methodology.

Sector-level analysis identified key emissions drivers. In security services, about 14% of emissions were linked to local business transport. Emissions in cleaning services were mainly associated with materials and equipment use.

In professional services, emissions were driven by business transport and information technology equipment use.

Beyond services, the registry added five EFs for information and communications technology and 86 factors covering industry processes and product use (IPPU), refrigerants, purchased energy and building materials.

Data for these categories were provided by the National Environment Agency, Energy Market Authority and Singapore Green Building Council.

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