CF Industries is a leading producer and distributor of nitrogen, which is primarily used in fertilizers. The company operates nitrogen manufacturing plants primarily in North America. CF also produces nitrogen in the United Kingdom and holds a joint venture interest in a nitrogen production facility in Trinidad and Tobago. CF makes nitrogen primarily using low-cost US natural gas as its feedstock, making the company one of the lowest-cost nitrogen producers globally. It is also investing in carbon-free blue and green ammonia, which can be used as an alternative fuel to hydrogen or as a means to transport hydrogen.