Mypostalexam.com is not affiliated with the USPS but sells the latest and most helpful Postal Jobs Exam Study Guide.
The desert kingdom has around 16% of the worldâs proven oil reserves and is the biggest global exporter of petroleum liquids. There is little doubt as to why its national oil company, Saudi Aramco, the biggest energy company in the world, generates over $1 billion in revenue every single day.
The Worldâs Biggest State Owned Oil Companies. Government-controlled companies dominate the ranks of the world's largest energy producers. In fact, based on combined oil and gas production figures for 2014, 15 of the world's 20 biggest energy-producing companies are state-owned enterprises controlled by national governments.