The glossary of terms is arranged alphabetically. Click on the letters below to find terms beginning with that letter.

Take-or-Pay: A clause in a gas supply contract that provides a minimum quantity of gas that must be paid for, whether or not delivery is accepted by the purchaser, for a specified period. Not generally included in contracts written today, since most contain a time period in which the buyer may take later delivery of gas without penalty.

Tariff: Compilation of all effective rate schedules for a company, along with general terms and conditions of service.

Therm: Unit of heating value equivalent to 100,000 Btu's.

Third Party Sales: Sales of natural gas that are ultimately resold to a third party.

Throughput: The volume of gas flowing through a pipeline.