Vitol 's main operations are based in Geneva , Houston , Singapore and London and in addition to the global crude and product trading businesses , the company has a growing presence in the coal , natural gas , power , carbon emissions and bio-fuels markets .
Vitol 's main operations are based in Geneva , Houston , Singapore and London . 
 In addition to the global crude and product trading businesses , the company has a growing presence in the coal , natural gas , power , carbon emissions and bio-fuels markets .