1st NRG Corp., an independent energy company, engages in the exploration, development, and production of natural gas properties in the United States. The company holds interests in the Clabaugh Ranch Field comprising 42 coal bed methane wells covering an area of 6,025 gross acres located in the Powder River Basin in northeast Wyoming. It also explores for oil, natural gas, and natural gas liquids in the Niobrara Shale that covers an area of 1,370 acres located in western Nebraska; and the Utica Shale, which covers an area of 7,150 acres located in eastern Ohio. The company was founded in 1988 and is based in Lone Tree, Colorado.