Air Management




National Greenhouse Gas (GHG) Inventory
As the focal point for climate change, the Ministry of Environment and Water (KASA)
is now developing the Fourth National Communication (NC4) and Fourth Biennial
Update Report (BUR4). Five (5) working groups (WG) have been setup for this
purpose, which comprises of the Energy Sector, Industrial Processes and Product
Use (IPPU) Sector, Agriculture Sector, Land Use, Land Use Change and Forestry
(LULUCF) Sector and Waste Sector. KASA has designated DOE as the
Implementing Agency in charge of developing a greenhouse gas inventory for the
waste sector.

The DOE served as the primary agency in the preparation of the report on GHG
emissions from the waste sector. As a result, DOE established the Committee on
Working Group on Waste Sector, which is responsible for collecting and analysing
data on GHG emissions. The committee members appointed include government
and government-related agencies such as the Ministry of Housing and Local
Government, National Solid Waste Management Department, Indah Water
Consortium (IWK), National Water Services Commission (SPAN), Sewerage
Services Department (JPP), The Malaysian Palm Oil Board (MPOB), Malaysian
Rubber Board (LGM), and Sarawak Natural Resources and Environment Board.

The GHG inventory for the waste sector consists of the inventory of GHG emissions
from various sources such as solid waste, scheduled wastes, domestic wastewater,
industrial wastewater, and other industrial wastes such as from palm oil industries,
natural rubber industries, pulp and paper industries, and poultry industries.

Based on Malaysia NC3 and BUR2, the waste sector was the third major GHG
emission source in Malaysia (8.6%) after the energy sector (79.4%) and Industrial
Processes and Product Use (IPPU) (8.6%). In terms of gaseous emissions, carbon
dioxide (CO2) emissions amounted to 80% of the total GHG emissions in 2016.
Methane gas (CH4) emissions were 17% of the total emissions, while both nitrogen
dioxide (N2O) and fluorine gases (F-gases) emissions were at 2%, respectively.

The main GHG emitted from the waste sector is methane gas (CH4). Methane is
emitted mainly during the anaerobic decomposition of organic waste disposed at
solid waste disposal sites and during the handling of domestic and industrial waste
under anaerobic conditions.

By developing an inventory for the waste sector, the country can assess and
evaluate the emissions sources and trends and forecast and analyse future
emissions. This would be an essential tool in identifying cost-effective emission
reduction potential and developing climate policies in Malaysia. The GHG inventory
could also be used to measure the benefits of emissions-reduction actions and to
define goals or targets for future GHG reduction.