G-I

gas: Natural gas, flammable gas, or other toxic or corrosive gas.
gas cap: A layer of gas that rests above oil in an underground porous structure or reservoir.
gas casinghead (wet natural gas): Associated and dissolved gas produced along with crude oil from oil wells. Sometimes called oil well gas or solution gas.
gas cost adjustment (GCA): A method of reflecting changes from month to month in the cost to a utility of gas supplied to customers. Elements in the calculation include changes in the price and quantities of gas from various pipeline suppliers, refunds ordered by FERC, and any reconciliation between GCA revenues and the actual payments utilities made for gas in the prior year.
gas detector surveys: A type of leakage survey conducted by sampling with a gas detector instrument that has, as a minimum, a sensitivity equal to that of a combustible gas indicator (CGI).
gathering line: A gas pipeline that transports gas from a production facility to a transmission line or main.
generating facility: All distributed generators that are included in an interconnection agreement.
generation (electricity): The process of producing electrical energy from other forms of energy; also, the amount of electric energy produced, usually expressed in kilowatt hours (kWh) or megawatt hours (MWh).
generation, gross: The electrical output at the terminals of the generator, usually expressed in megawatts (MW).
generation, net: Gross generation minus station service or unit service power requirements, usually expressed in megawatts (MW).
geographical information system (GIS): A...

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The Handbook of Microturbine Generators

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