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The oil & gas sector can be considered to be one of the most damaging sectors. In addition, the diversity among the nine companies’ performance is quite strong: The performance of the top performer (BG Group) and the least efficient company (Unipetrol) vary by a factor of almost 15. Some of this might be credited to a different fuel mix. Among others this is reflected in the CO2-performance The CO2-efficiency of BG Group is more than twice as good as the CO2-performance of the second ranked company (BP) in 2003. The rather low performance of ERG may be partly due to the fact that the company is not only active in crude oil processing and the distribution of petroleum products, but also in power generation. Overall, the spread between the leaders and the laggards among the oil & gas companies we have analysed is quite large.
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