Decontrol of the wellhead price of natural gas under the Natural Gas Policy Act of 1978 ended the general shortage of natural gas, which had begun in the 1960s. It also led to dislocations in gas markets because of regulatory uncertainties that created difficulties in renegotiating contracts...

Recent regulatory changes permitted natural gas pipelines to become "open access" transporters. This change in pipeline carrier status dissolved regulatory barriers to markets. This paper describes the institutions that were developed to support exchange in gas markets and observes and evaluates...