Webster's Online Dictionary
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Common Expressions: INDEPENDENT SYSTEM OPERATOR

ExpressionsDefinition
Independent System OperatorIn the US an Independent System Operator or ISO, is a federally regulated regional organization which coordinates, controls and monitors the operation of the electrical power system. (references)

Source: compiled by the editor from various references; see credits.

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Specialty Expressions: INDEPENDENT SYSTEM OPERATOR

ExpressionsDomainDefinition
Independent system operatorStatisticsA neutral operator responsible for maintaining instantaneous balance of the grid system. The ISO performs its function by controlling the dispatch of flexible plants to ensure that loads match resources available to the system. Source: European Union. (references)
Independent system operator (ISO)AdministrationThe ISO is an evolving concept. In general usage, an ISO is a voluntarily-formed entity that ensures comparable and nondiscriminatory access by power suppliers to regional electric transmission systems. As currently envisioned, ISOs would be governed in a manner that renders them "independent" of the commercial interests of power suppliers who also may be owners of transmission facilities in the region. The ISO assumes operational control of the use of transmission facilities, administers a system wide transmission tariff applicable to all market participants, and maintains short-term system reliability. ISOs will develop on a regional basis, reflecting differences among regions in operating and structural characteristics of the transmission grid. Some ISOs also may be responsible for long-range system planning. (references)
Independent system operator (ISO)Energy1: An independent, Federally regulated entity established to coordinate regional transmission in a non-discriminatory manner and ensure the safety and reliability of the electric system. (references)
  2: A neutral and independent organization with no financial interest in generating facilities that administers the operation and use of the transmission system. (references)

Source: compiled by the editor from various references; see credits.

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