The energy sector constitutes one of largest global economic engines, and it is continuing to expand. It contributes approximately 20% of global GDP and employs upwards of 10% of the workforce. This boom has been exacerbated by a desire for energy security as well as rising energy demand. Production and distribution of electricity, natural gas, and petroleum products; transportation fuels such as gasoline, diesel, and jet fuel; energy conservation; alternative energy sources such as wind power; and nuclear power plants are all aspects of the energy sector.

Analysts