How Is KR 5.2 Tracking?
The Cement key result applies to the fabrication of concrete, which emits almost 3 gigatons. Our aim is to cut 2 gigatons of those emissions by 2050.
Cement innovations need to target one of two primary points of emissions: the fuel for the heat, or the chemical reaction within the kiln.
For heat, there are promising approaches to replace fossil fuels with electricity or clean hydrogen. As to production within the kiln, several companies are redesigning the process to capture the carbon dioxide rising off the limestone.
Other groups are testing new materials and additives that can help form concrete with less clinker, traditionally the main manufactured ingredient—and thereby lower emissions.
Data for KR 5.2 is sourced from the IEA using 2021 data on the carbon intensity of cement production.