CO2 emissions from production

Emissions in line with energy use

Emissions of CO₂ per tonne of product fell by 2.1 per cent in line with reduced energy use, but there were variances across the product lines. The bulk of our CO₂ emissions arise from the manufacture of cement. A variety of fuels are used to heat the limestone and shale mix to temperatures of around 1,450⁰C to produce clinker. The clinker is then ground into to a fine powder to make cement. Over 65 per cent of the CO₂ produced is driven from the raw material in the kiln as part of the chemical reaction which turns limestone into clinker. These are called process emissions. The remaining CO₂ emissions come from burning fuel.

By using best available techniques and alternative fuels we are able to reduce fuel-derived emissions but it is not possible to reduce process emissions.

CO2 emissions from production

CO2 emissions from production
	2010 (baseline)	2013	2014	2015	% change since 2010	% change since 2014
Kilogrammes of CO2 per tonne of product	44.80	49.74	52.74	51.64	15.27%	-2.1%
Tonnes of CO2 from production	1,751,295	1,956,817	2,166,944	2,173,701	24%	0.3%

 

Note: All data is scope 1 and 2 emissions using published DEFRA or EUETS 2015 emissions factors.

Target: 10 per cent reduction in carbon emissions by 2020 based on 2010 baseline

Click here for data by business line