CO2 Emissions - Production
The indicator for production CO2 is carbon intensity or CO2/tonne of concrete produced. Data from the energy use of concrete production and a proportional contribution from constituent materials are converted to carbon emissions using factors published by DEFRA with an adjustment for the process carbon emissions from cement.
The Standardised or Baseline mix is based on the average proportions of materials in concrete when the strategy was launched in 2008. By using these fixed mix proportions with each year’s carbon values, the industry reports the overall carbon intensity and shows the performance directly under its control.
Performance indicator: CO2 emissions - Production (Standardised mix) (kg CO2/tonne)
2018 data shows that the 2020 carbon emissions target was met with CO2 emissions per tonne of 72.1kg.
The 2020 target is to reduce CO2 emissions by 30% from the 1990 baseline equivalent to a value of 72.2 kg CO2/tonne of concrete produced. In 2018 the standardised mix value was 72.1 kg CO2/tonne for concrete.
For concrete + reinforcement the CO2 emissions are 80.2 kg CO2/tonne - this is a reduction of 15% (from 94.7kg CO2/tonne) since the first year of reporting in 2009.
These indicators are part of the Carbon section of the report and 2020 Strategy Commitments. An update on our Carbon commitments.