Sustainability Report 2016 / 2017

➲ Material Efficiency The input quantities of raw materials, additives and operating supplies and the changes in individual materials depend directly on the produced assortment (article mix). Surfactants, acids, salts and alcohol make up the largest quantities processed. Overall input quantities in 2015 compared to the prior year were reduced 3 percent in relation to filling amount in kilograms and 8 percent in relation to number of pieces. ➲ Emissions With the gradual conversion of building heating to district heating systems, which was completed in 2011, the in-house generation of heating energy tapered off. We recorded a corresponding reduction in CO 2 emissions from the generation of process and heating energy in our boiler building from 1,033 tons in 2010 to 672 tons in 2015. As Werner & Mertz – Mainz has used up to 100 percent eco-electricity and certified natural gas since 2014, the Mainz site recorded no CO 2 emissions in 2015 either. The CO 2 emissions from the generation of district heating used to heat the buildings increased in 2015 by just 8.8 percent, although the year‘s number of degree days in 2015 was 11.3 percent higher than in 2014. 48 Material Efficiency (Raw materials, additives and operating supplies) Raw materials (kg) filling amount (kg) Raw materials (kg) filling amount (piece) 0.30 0.25 0.20 0.235 0.221 0.266 0.264 0.241 0.248 0.251 0.240 2012 2013 2014 2015 Environmental Statement · Mainz site