Colorado:.It ranks seventh among the states in total energy production, ninth in oil production, fifth in natural gas production,
SEPTEMBER 10, 2013 Colorado has substantial conventional fossil fuel resources in the Sand Walsh, Piceance, Paradox, and San Juan basins in the west, and the Denver and Raton basins in the east. It ranks seventh among the states in total energy production, ninth in oil production, fifth in natural gas production, and eleventh in coal production. Colorado has enorm..