Energy Glossary
To make the informed choice, you need to know the lingo. Learn it here.
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Gauge pressure plus barometric pressure. Absolute pressure can be zero only in a perfect vacuum.
The measure of a fluid's tendency to resist flow, without regard to its density. By definition, the product of a fluid's kinematic viscosity times its density.
A marketer that is owned either by a distribution or transmission company, or by a corporation that also owns a distribution or transmission company.
A legal representative of buyers, sellers or shippers of natural gas in negotiation or operations of contractual agreements.
The ratio of the air volume to the gas volume. A specified ratio is necessary to achieve a desired character of combustion.
The process of determining ownership rights to the gas delivered to a meter.
Trade group representing natural gas distributors and pipelines.
Average gas used annually per customer in Btu's or therms by class of service; annual Btu's or therms sales to a class divided by the average number of customers for that class of service.
The storage of gas underground in porous and permeable rock stratum, the pore space of which was originally filled with water.
A method of classifying costs as demand or commodity costs promulgated by the FPC in Opinion 225, April 25, 1952. Generally, this method allocates 50% of the pipeline's fixed storage and transmission costs to the demand component and 50% to the commodity component of the rates.
"Real time" monitoring of natural gas quantities and characteristics as it passes through a specific location.