An energy company is a company which operates within the energy industry, which can be involved in the production and sale of energy, including fuel extraction, manufacturing, refining and distribution. The companies listed below are traded on public stock exchanges, as such state owned energy companies, such as Aramco are not included. However Saudi Arabia’s deputy crown prince, Mohammed bin Salman, revealed plans to float 5% of the shares of Aramco, creating a publicly traded company with a market capitalisation of around $2 trillion.