GHG Emission Reporting Requirements: A Singapore Guide

Why GHG Emission Reporting Is Now a Business Priority in Singapore

Singapore’s regulatory landscape around greenhouse gas (GHG) emissions has shifted considerably over the past few years, and the pace of change is accelerating. The Carbon Pricing Act, administered by the National Environment Agency (NEA), now covers a broader range of facilities, and the carbon tax rate has been progressively raised as part of Singapore’s commitment to its Nationally Determined Contribution under the Paris Agreement. For businesses operating here, understanding GHG emission reporting requirements is no longer optional — it is a legal and commercial necessity.

Beyond compliance, accurate GHG reporting feeds directly into workplace safety and health (WSH) risk management frameworks. The Workplace Safety and Health Act (Cap. 354A) and the WSH (Risk Management) Regulations require employers to identify and manage risks systematically, and environmental hazards — including those associated with carbon-intensive processes — fall within that scope. Companies pursuing bizSAFE certification or maintaining ISO 45001 and ISO 14001 management systems will find that robust GHG data strengthens their overall risk profile and audit readiness.

This article explains the key obligations, walks through a practical compliance checklist, and answers the questions we hear most often from clients across manufacturing, construction, logistics, and facilities management sectors in Singapore.

The Regulatory Context: What Singapore Law Requires

The primary legislation governing GHG emission reporting in Singapore is the Carbon Pricing Act 2018 (amended 2022), which mandates that business facilities emitting 25,000 tonnes or more of carbon dioxide equivalent (tCO2e) per year register with NEA, measure their emissions, and submit verified annual reports. From 2024 onwards, the reportable threshold and the carbon tax rate trajectory have both been tightened, so facilities that previously sat below the threshold should reassess their position annually.

Separately, the Energy Conservation Act (ECA) requires large energy users — those consuming 54 terajoules or more of energy per year — to register with the Energy Market Authority (EMA), conduct energy audits, and submit energy efficiency improvement plans. GHG data and energy data are closely linked; a gap in one often signals a gap in the other.

From a workplace safety perspective, the WSH (Risk Management) Regulations require employers to conduct risk assessments that cover all hazards in the workplace, including chemical and environmental hazards that contribute to GHG emissions (for example, refrigerant leaks, solvent use, and combustion processes). The Ministry of Manpower (MOM) expects these risk assessments to be documented, reviewed periodically, and acted upon. The Workplace Safety and Health Council (WSHC) has published sector-specific guidelines that reference environmental risk controls alongside conventional safety controls.

For organisations seeking international alignment, ISO 14064-1:2018 provides the framework for quantifying and reporting GHG emissions at the organisation level, while ISO 14064-3 covers verification. Many Singapore companies voluntarily adopt these standards to satisfy investor expectations, supply chain requirements, and the Singapore Exchange (SGX) sustainability reporting rules, which have made climate-related disclosures mandatory for listed issuers on a phased basis.

Practical Steps and Compliance Checklist

Getting GHG emission reporting right requires a structured approach. The following checklist reflects the steps Sage Shield Safety Consultants typically works through with clients, from initial scoping to verified submission.

• Determine applicability: Calculate your facility’s total GHG emissions using NEA’s prescribed methodology. Confirm whether you fall under the Carbon Pricing Act threshold (25,000 tCO2e/year) or the ECA energy threshold. Even if you are below mandatory thresholds, voluntary reporting may be required by your parent company, financiers, or customers.
• Define your organisational and operational boundaries: Following ISO 14064-1, decide whether you are applying the equity share, financial control, or operational control approach. This determines which emission sources you must include and which you may exclude.
• Identify all emission sources: Map Scope 1 (direct combustion, process emissions, fugitive releases), Scope 2 (purchased electricity and heat), and — where required — Scope 3 (value chain emissions). Refrigerant leaks, diesel generators, and company-owned vehicles are commonly missed Scope 1 sources in Singapore workplaces.
• Integrate with your WSH Risk Management process: Under the WSH (Risk Management) Regulations, your risk register should already capture chemical and process hazards. Cross-reference these with your GHG source inventory to ensure nothing falls through the gaps. This integration also satisfies auditors under bizSAFE Star and ISO 14001 simultaneously.
• Collect and validate activity data: Gather fuel purchase records, utility bills, process logs, and equipment maintenance records. Establish internal controls to ensure data quality — NEA requires that reported data be accurate, complete, consistent, transparent, and relevant.
• Apply approved emission factors: Use NEA’s published emission factors for Singapore’s electricity grid. For fuels and refrigerants, reference the IPCC Assessment Report values specified in NEA’s guidelines. Do not use generic global averages without checking against local requirements.
• Engage an accredited verifier: NEA requires that GHG reports submitted under the Carbon Pricing Act be verified by an accredited third-party verifier. Engage the verifier early — ideally before data collection is complete — so that any methodology questions are resolved before submission.
• Submit on time: Annual reports are typically due by 30 June for the preceding calendar year. Late or inaccurate submissions can attract penalties under the Carbon Pricing Act. Maintain copies of all submissions and verifier statements for at least five years.
• Review and improve: Use each reporting cycle to identify reduction opportunities. NEA’s Energy Efficiency Fund and the Enterprise Development Grant both support projects that cut emissions and energy use. Documenting these improvements also strengthens your bizSAFE and ISO audit outcomes.

Common Questions About GHG Emission Reporting in Singapore

Q: Our facility emits less than 25,000 tCO2e per year. Do we still need to report?

You are not legally required to submit a report under the Carbon Pricing Act if you are below the mandatory threshold, but you should still monitor your emissions carefully. The threshold has been reviewed before and may be lowered again. Additionally, SGX sustainability reporting rules, customer due diligence requirements, and bank lending criteria increasingly require GHG data regardless of regulatory status. Many of our clients below the mandatory threshold choose to report voluntarily using the ISO 14064-1 framework so that they are audit-ready and can demonstrate good governance to stakeholders.

Q: How does GHG reporting connect to our bizSAFE obligations?

bizSAFE is a WSHC-administered programme that builds a company’s WSH capabilities in stages, culminating in bizSAFE Star, which requires a fully implemented WSH Management System aligned with SS 651 or ISO 45001. While bizSAFE does not mandate GHG reporting directly, the risk management processes required at bizSAFE Level 3 and above — particularly hazard identification, risk assessment, and legal compliance registers — should capture environmental obligations including those under the Carbon Pricing Act and ECA. Companies that treat GHG reporting as a separate silo often discover during bizSAFE Star audits that their legal compliance register is incomplete. Integrating GHG obligations into your WSH framework from the outset avoids this problem and reduces administrative duplication.

Take the Next Step with Sage Shield

Navigating GHG emission reporting requirements alongside MOM, WSHC, and NEA obligations is demanding, particularly for teams that are already managing day-to-day safety and operations. Sage Shield Safety Consultants helps Singapore businesses build integrated compliance systems that satisfy WSH, environmental, and sustainability reporting requirements without duplicating effort. Whether you need a gap analysis against the Carbon Pricing Act, support preparing your first verified GHG report, or help embedding emission tracking into your existing WSH risk management framework, our consultants bring practical, regulation-specific expertise. Book a free consultation today at sageshield.com/contact and let us help you build a compliance programme that is accurate, defensible, and ready for the next reporting cycle.

For the full requirements, scope and certification pathway, see our ISO 14064 Singapore guide.