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IFEU Heidelberg

7

2.5

Life time energy and CO2 savings for the new registrations of one year

The preceding sections have dealt with the primary energy savings for single vehicles by an absolute weight reduction of 100 kg. The selected vehicles, however, differ very much in terms of total weight and total numbers. While 100 kg is a significant weight re- duction and difficult to achieve for a passenger car, it is easily achieved for long dis- tance trains. A relative weight reduction of 10 % takes into account the potential of heavier vehicles for a higher absolute weight reduction. On the other hand, passenger cars exist in greater numbers and can achieve higher energy savings as a subsystem. The life-time energy savings of the annual nation-wide new registrations have been estimated as a scenario with the assumption that all vehicles are weight reduced by 10 % compared to today’s average. This shows the significance and potential of the different transport subsystems in a country like Germany, which has been selected for exemplification (Chart 5 & Chart 6). Energy and CO2 savings are outstandingly high for transport subsystems with a great share of the total energy consumption of trans- port, like passenger cars.

Chart 5: Scenario for the life-time primary energy savings of 10 % weight reduced annual new reg- istrations in Germany 2000

Life-time primary energy savings [PJ]

100

Road vehicles

Rail vehicles

90

80

70

60

0

92

1,1

0,7

Cars

City buses

Long distance buses

50

40

30

20

10

Source: IFEU 2002 from various sources

12

1,2

Heavy duty Subways/

vehicles

urban

>32 t

trains

Regional

Long

Long

trains

distance

distance

passenger

freight

trains

trains

4,5

1,3

2,1

IFEU 2003

Energy savings by light-weighting

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