Environmental performance indicators

	Unit	2017	2016	2015	2014	2013

Energy
Total energy consumption	1'000 GJ	6'941	6'605	6'392	6'317	6'475
Electricity	1'000 GJ	3'296	3'168	2'878	2'835	2'944
Natural gas, biogas, fuel oil	1'000 GJ	1'247	1'205	1'262	1'186	1'342
Coke, lignite	1'000 GJ	2'265	2'121	2'156	2'192	2'082
Fuel use (for internal transportation)	1'000 GJ	110	92	80	72	75
Other energy sources	1'000 GJ	23	19	16	30	33
Energy sold	1'000 GJ	–103	–96	–105	0	0
Net energy consumption	1'000 GJ	6'838	6'509	6'287	6'317	6'475
Target line energy efficiency index 3 (production volume/energy consumption 4 )		104	102	100
Energy efficiency index (status at year-end)		106	108	100

GHG emissions (in CO 2 e) 5
Total CO 2 e emissions	1'000 tonnes	716	642	617	671	773
Scope 1 (Direct emissions: energy consumption)	1'000 tonnes	325	307	313	313	311
Scope 2 (Indirect emissions: electricity and district heating)	1'000 tonnes	387	332	303	355	459
Scope 3 (Indirect emissions: business travel)	1'000 tonnes	5	4	2	3	2
Target line GHG emission intensity index 3 (CO 2 e emissions/production volume 4 )		96	98	100
GHG emission intensity index (status at year-end)		98	88	100

Air emissions
Nitrogen oxides (NO X )	1'000 tonnes	0.04	0.03	0.03	0.03	0.01
Sulphur oxides (SO X )	1'000 tonnes	0.01	0.01	0.01	0.01	0.01

Water and wastewater
Total water consumption	1'000 m 3	2'940	2'800	2'872	2'700	2'774
City water from public supply	1'000 m 3	635	625	650	584	602
Ground and rain water	1'000 m 3	2'304	2'175	2'222	2'116	2'172
Wastewater volume	1'000 m 3	2'078	1'974	1'956	868	895
Wastewater to sewage systems	1'000 m 3	920	893	884	821	814
Wastewater returned to nature, unpolluted	1'000 m 3	1'158	1'081	1'071	47	81
Target line water intensity index 3 (water consumption/production volume 4 )		96	98	100
Water intensity index (status at year-end)		74	91	100

Waste and recycling
Total waste	1'000 tonnes	326	314	309	315	324
Normal waste, recycling	1'000 tonnes	263	249	233	250	268
Normal waste, landfill or incineration	1'000 tonnes	44	45	54	43	36
Hazardous waste	1'000 tonnes	18	20	22	21	19
Hazardous waste, recycling	1'000 tonnes	16	14	15	15	13
Hazardous waste, storage or incineration	1'000 tonnes	2	6	6	6	6
Target line non-recycled waste intensity index 3 (non-recycled waste/production volume 4 )		96	98	100
Non-recycled waste intensity index (status at year-end)		83	96	100

Business trips
Air travel	1'000 pkm	36'872	31'863	14'305	22'342	19'693

Monetary values
Expenditure for environmental protection	CHF million	18	15	16	13	14
Energy costs	CHF million	128	103	118	131	143
Water and wastewater costs	CHF million	3	3	3	3	4
Waste disposal costs and recycling credits	CHF million	8	8	7	9	8

1 The environmental performance indicators include all GF production companies.

2 Due to the implementation of a new Sustainability Reporting Tool, the historical data points have been consolidated and restated. The same GF company consolidation principles apply as in the Annual Report 2017.

3 The target line is calculated linearly based on the standardized baseline consumption (=100) and according to the defined target.

4 The production volume is defined based on the specificities of the businesses of the individual divisions: as "produced tonnes" for GF Piping Systems, as "gross value added" for GF Casting Solutions and as "hours worked" for GF Machining Solutions.

5 CO 2 -equivalents is a unit used to transform other greenhouse gases into CO 2 e (CO 2 =1) according to their global heating potential. The applied emission factors are based on the GHG Protocol 2016.