GHG Emissions Calculator

SEDG
GHG Emissions Calculator

This calculator helps Malaysian companies identify key GHG emission sources in line with the ‘Emissions’ disclosure requirements of the Simplified ESG Disclosure Guide (SEDG) for SMEs in Supply Chains, enabling them to estimate both absolute Scope 1 and 2 emissions and emissions intensity per unit revenue.

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What are Greenhouse Gas (GHG) Emissions

Greenhouse gas (GHG) emissions consist of various gases that drive climate change, primarily Carbon Dioxide (CO₂), Methane (CH₄), and Nitrous Oxide (N₂O). Each gas has a different level of impact, known as its Global Warming Potential (GWP). Emission sources are grouped into three categories: Scope 1, Scope 2, and Scope 3.

For more information, please refer to GHG Protocol for various guidance and tools.

Scope 1

These emissions come from activities under your direct control - such as releasing gases into the atmosphere through chemical processes like fuel combustion or gas leaks.

Scope 2

These emissions are indirect and result from purchased energy - primarily electricity, but also steam, heat, or cooling if acquired in significant amounts from third parties, such as energy providers.

Scope 3

These emissions are the most complex, as they are indirect and originate from a company’s upstream and downstream activities - ranging from employee commuting to the procurement of goods and services.

Methodology

The calculator uses an activity-based approach. This means we ask users to provide direct data such as the amount of fuel used in mobile or stationary combustion sources, and the amount of electricity consumed. Each activity is then paired with a specific emission factor to calculate the GHGs produced. The methodology and details of the calculator are provided in the user guide.

The basic formula used is:

GHG emissions = Activity data × Emission factor

About

The Simplified GHG Emissions Calculator was developed by Capital Markets Malaysia (CMM), an affiliate of the Securities Commission Malaysia, to support Malaysian small and medium enterprises (SMEs) in supply chains in identifying and reporting their Scope 1 and Scope 2 greenhouse gas (GHG) emissions.

Simplified ESG Disclosure Guide (SEDG) for SMEs in Supply Chains

The Guide provides practical, structured guidance on disclosures expected of small and medium enterprises (SMEs) within the supply chains, in relation to environment, social and governance (ESG) matters.