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Peak Capacity
Capacity of generating equipment normally reserved for operating during the hours of highest daily, weekly or seasonal loads. Some generating equipment may be operated at certain times as peaking capacity and at other times to serve loads on an around-the-clock basis.
Peak Day Demand
The maximum daily quantity of gas used during a specified period, such as a year.
Peak Demand
The maximum load during a specific period of time.
Peak Load
The maximum load consumed or produced by a unit or group of units in a stated period of time.
Peak Load Plant or Peaked Unit
A plant usually housing low-efficiency, quick response steam units, gas turbines, diesels or pumped storage hydroelectric equipment normally used during the maximum load periods. Peakers are characterized by quick start times and generally high operating costs, but low capital costs.
Peak Shaving
Methods to reduce the peak demand for gas or electricity.
Petroleum
A complex mixture of various hydrocarbons existing in the liquid state found in natural underground reservoirs, often associated with gas. Petroleum includes fuel oil No. 2, No. 4, No. 5, No. 6; topped crude; kerosene; and jet fuel.
PGA
Purchased gas adjustment
Pipeline
An entity engaged in the transportation of natural gas in interstate or intrastate commerce. Also, the actual facility itself.
Pipeline Interconnection
A point at which facilities of two or more pipelines interconnect.
Pipeline System
A collection of pipeline facilities used to transport natural gas from source of supply to burner tip, including gathering, transmission or distribution lines, treating or processing plants, compressor stations and related facilities.
Pooling Point
The point (either physical or theoretical) at which gas is aggregated from many receipt points in order to serve several contracts without tying a specific receipt point to a specific contract. "Paper pooling" refers to aggregation as a matter of accounting, as opposed to physical pooling in a supply basin.
Power
A term usually meant to imply both capacity and energy. The rate at which energy is transferred. Electrical energy is usually measured in watts.
Power Factor
The efficiency at which electricity is consumed – ratio of real power, kilowatts (kWh), to apparent power, kilovolt amps (kva), for and given load and time.
Power Factor Adjustment
A calculation or charge on industrial or commercial customers' bills reflecting an adjustment in billing demand based on customer's actual metered power factor. If the power factor stays within a specified range, there is no adjustment.
Power Plant
An industrial facility that has the production of kilowatt hours of power as its primary product. The power is produced from a raw material such as oil, coal or nuclear. A plant that converts mechanical energy to electric energy.
Power Pool
An association of two or more interconnected electric utility transmission systems having an agreement to coordinate operations and planning for improved reliability and efficiencies; i.e., WSPP, SPP, NEPool, etc.
PSC
Public Service Commission
PUC
Public Utility Commission
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