10.2 Energy Consumption

In 2015, we succeeded in reducing the Group’s total energy consumption by 2.5% to 83.2 petajoules. Basically, we differentiate between primary energy consumption – mainly of fossil fuels for our own generation of electricity and steam – and secondary energy consumption that reflects the purchase of electricity, steam and refrigeration energy and the use of process heat.

Primary energy consumption fell by 5.7%. This was mainly due to the reduction in natural gas, which was primarily achieved through more efficient facility operation at the Uerdingen site in Germany. The use of coal was approximately at the same level as the previous year, while consumption of liquid fuels and other primary energy sources was reduced. Waste utilization was significantly higher than the previous year, mainly owing to the use of liquid waste as a source of energy at Covestro’s site in Caojing, China. Secondary energy consumption rose by 1.1%. The use of electricity declined, while consumption of steam and process heat was higher than in 2014 (see Table Energy Consumption in the Bayer Group).

The drop in total energy consumption (primary and secondary energy sources) was mainly caused by lower energy needs at the Leverkusen and Uerdingen sites in Germany. Moreover, the partial shutdown of production facilities at the Belford Roxo site in Brazil also contributed to a reduction in total energy consumption.

Group target 2020:

improvement of 10% in Group-wide energy efficiency

In 2015, Bayer’s manufactured sales volume rose by 2.7%. We were able to slightly improve our energy efficiency, which we define as the total energy consumption in megawatt hours (MWh) per metric ton of manufactured sales volume, from 3.37 MWh/t in 2014 to 3.34 MWh/t in 2015. This development confirms the trend of a decoupling of manufactured sales volume from energy consumption identified in previous years. This brings us closer to our Group target of improving energy efficiency by 10% by 2020.

Energy Consumption in the Bayer Group

 

 

2011

 

2012

 

2013

 

2014

 

2015

1

E.g. hydrogen

2

Secondary energy consumption for electricity is based on the raw material mix of the country concerned

3

Energy efficiency is the quotient of total energy consumption and manufactured sales volume. For Covestro, this includes neither the secondary products sodium hydroxide solution and hydrochloric acid generated in production nor trade products.

Primary energy consumption for the in-house generation of electricity & steam (TJ)

 

50,096

 

49,047

 

47,582

 

45,572

 

42,996

Natural gas

 

31,162

 

30,411

 

29,796

 

31,580

 

28,813

Coal

 

16,776

 

15,954

 

15,094

 

12,611

 

12,755

Liquid fuels

 

660

 

656

 

416

 

421

 

350

Waste

 

515

 

1,005

 

1,282

 

833

 

1,523

Other1

 

983

 

1,021

 

994

 

127

 

(445)

 

 

 

 

 

 

 

 

 

 

 

Secondary energy consumption (net, TJ)

 

34,846

 

34,137

 

33,266

 

39,745

 

40,186

Electricity2

 

25,475

 

25,849

 

25,560

 

27,177

 

25,977

Steam

 

1,054

 

(121)

 

(801)

 

3,579

 

4,694

Steam from waste heat (process heat)

 

9,000

 

9,144

 

9,146

 

9,639

 

9,974

Refrigeration energy

 

(683)

 

(735)

 

(639)

 

(650)

 

(459)

 

 

 

 

 

 

 

 

 

 

 

Total energy consumption (TJ)

 

84,942

 

83,184

 

80,848

 

85,317

 

83,182

 

 

 

 

 

 

 

 

 

 

 

Energy efficiency3 (MWh / t)

 

3.63

 

3.50

 

3.44

 

3.37

 

3.34

More than 90% of our own energy generation comes from combined heat and power processes. These efficient power plants convert approximately 80% of the fuel energy used into electricity and heat. In addition, we purchase electricity on the market – through energy exchanges, for example. The electricity and heat generated and purchased are used in our own production facilities and third-party facilities (especially of Lanxess Deutschland GmbH as the other shareholder of our service company Currenta). The proportion of renewable energies is determined by the energy mix of our energy suppliers. We comment in detail on these issues in our CDP (formerly Carbon Disclosure Project) is an independent, not-for-profit organization that works on behalf of analysts and investors to promote the transparent reporting of greenhouse gas emissions and water use (Water Disclosure Report) by companies. CDP publishes two climate rankings each year: the Climate Disclosure Leadership Index (CDLI) rates the extent and quality of the disclosure of climate-relevant data, while the best-rated companies are additionally listed in the Climate Performance Leadership Index (CPLI). (previously Carbon Disclosure Project) Report.