The document lists the 10 most expensive energy projects globally, ranging from $116 billion for the Kashagan oil field in Kazakhstan to $28 billion for the Three Gorges Dam in China. Most of the top projects are liquefied natural gas (LNG) facilities located in Australia, with others including oil sands projects in Canada and a natural gas field in Russia. Major oil companies like Chevron, Exxon, Shell, and Petronas are involved in several of these massive undertakings.