87

The energy efficiency indicator measures the variation of energy consumption in proportion to the volume of activities at each of our business units. This year we have managed to reduce the efficiency

ratio values, both in the Refining and Ex- ploration and Production activities, thanks to the implementation of multiple energy efficiency measures and processes in our production plants.

At Cepsa we prevent and control all our significant emissions into the atmosphere, not only gHg emissions, with the objective of minimising the damage that the sub- stances can cause to the environment or health. We have an action system based on the continuous control of these emis- sions; our emission indicators per product unit have been on a downward trend year after year thanks to our improvements in

combustion, the use of cleaner technolo- gies and abatement systems.

The only significant increases recorded in the measurements are the SO2 emissions and suspended particles from the Chemi- cals business area, which are mainly due to the incorporation of the Sinar mas plant, in Indonesia.

NON-gHg EmISSIONS

SO2 emissions 2017 2016 2015

Refining (kg/t processed) 0.283 0.328 0.360

Chemicals (kg/t produced) 0.030 0.004 0.005

E&P (kg/t oil and gas produced) 0.020 0.052 0.061

NOx emissions 2017 2016 2015

Refining (kg/t processed) 0.170 0.154 0.157

Chemicals (kg/t produced) 0.128 0.131 0.149

E&P (kg/t oil and gas produced) 0.716 0.817 0.935

COvNm emissions 2017 2016 2015

Refining (kg/t processed) 0.014 0.012 0.025

Chemicals (kg/t produced) 0.121 0.176 0.157

E&P (kg/t oil and gas produced) 0.091 0.116 0.120

Pm emissions 2017 2016 2015

Refining (kg/t processed) 0.012 0.012 0.015

Chemicals (kg/t produced) 0.006 0.003 0.004

E&P (kg/t oil and gas produced) 0.010 0.012 0.013

2017 ANNUAL AND CORPORATE RESPONSIbILITy REPORT