Texas is the nation’s leading producer of oil and gas, refined products, and chemicals. Texas is home to 26 operating refineries (ironically, this is the same number of refineries it had in the late 1930’s). Overall refinery capacity is approximately 4.3 million barrels per day, accounting for over 26 percent of total US production, and approximately 5.3 percent of worldwide capacity. Texas is the nation’s largest chemicals producer, manufacturing 14 percent of the nation’s value of chemical output. The Gulf Coast complex of chemical plants and refineries is the largest petrochemical complex in the world, home to over 200 chemical plants.