The petroleum industry, including oil companies, petroleum refiners, fuel transport and end-user sales at gas stations.
The gas industry, including natural gas extraction, and coal gas manufacture, as well as distribution and sales.
The electrical power industry, including electricity generation, electric power distribution, and sales.
The coal industry.
The nuclear power industry.
The renewable energy industry, comprising alternative energy and sustainable energy companies, including those involved in hydroelectric power, wind power, and solar power generation, and the manufacture, distribution, and sale of alternative fuels.