As home to supermajors, as well as a plethora of smaller, independent energy players, the US boasts one of the largest concentrations of energy personnel in the world. With its insatiable appetite for energy resources, the United States is the world's single largest consumer of oil, using as much as 20.73 million barrels per day as of 2008. Recently, interest has peaked in the vast quantity of untapped natural gas resources in the US, the reserves of which were inventoried in 2008 at 238 Tcf, with producers specifically targeting the nation's promising shale formations for this energy commodity.
Facilities engineers oversee the design and construction of various production and utility systems in a given facility, ranging from offshore platforms to onshore plants. They assist with designing the layout and systems including everything from power sources, climate control, water and lighting to more specialized systems such as those processing chemicals or environmental controls. Many facilities engineers are also involved with the ongoing operations of this equipment, suggesting maintenance schedules and consulting on future renovations and construction.