independent system operator

In 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. It also acts as a marketplace in wholesale power, especially since the electricity market deregulation of the late 1990s. Most are set up as non-profit corporations using governance models developed by the Federal Energy Regulatory Commission or FERC in April 1996. FERC Order 888/889 required Open Access of the grid to all electricity suppliers and mandated the requirement for an Open Access Same-Time Information System (OASIS) to coordinate transmission suppliers and their customers. The Canadian equivalent is an IEMO Independent Electricity Market Operator.

* http://www.pjm.com Pennsylvania New Jersey Maryland Interconnection

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