What does CIDB’s embodied carbon inventory fail to cover on site?

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CIDB’s embodied carbon inventory does not cover carbon released from construction activities on site
CIDB’s Embodied Carbon Inventory is designed to consolidate emission factors, but it does not attempt to cover carbon released from construction activities carried out on site. The on-site items it explicitly omits include fuel combustion from excavators, cranes and generators, as well as waste disposal, temporary works, transport, services, machinery and other on-site activities. These on-site activities are described as accounting for 37 per cent of the construction industry’s total carbon footprint, yet Malaysia has no standardised quantification mechanism for them.
The on-site emissions categories it does not attempt to quantify
The inventory does not cover carbon released during construction work performed on site. Examples listed include fuel combustion from excavators, cranes and generators, which are common drivers of on-site emissions during active works. It also excludes waste disposal and other on-site activities carried out during the construction process.
Temporary works, transport and services are also outside its scope
The inventory does not attempt to include emissions tied to temporary works used during construction. It likewise does not cover transport and services associated with on-site activities. Machinery use on site is also among the categories it does not account for within the inventory’s approach.
Why this gap matters for reported carbon figures
The omitted on-site activities are described as representing 37 per cent of the construction industry’s total carbon footprint. In Malaysia, there is no standardised quantification mechanism for any of the on-site emissions categories listed. As a result, the on-site portion of carbon is not captured in the same way when firms rely on a framework that stops short of on-site activity emissions.
The inventory’s role versus what it leaves unaddressed
CIDB’s inventory functions as a primary reference that consolidates emission factors from sources such as Environmental Product Declarations from Southeast Asia, Singapore’s BECC, SIRIM and the UK’s Inventory of Carbon and Energy. However, it is framed as not covering construction-activity carbon released on site, rather than providing a full picture of construction-related emissions. The gap is therefore not just a missing dataset detail; it is a defined boundary around on-site emissions categories.

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What does CIDB’s embodied carbon inventory fail to cover on site?

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