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Maintaining Grid Reliability

The electrical grid is an interconnected network for delivering electricity from producers to end-users. It consists of generating stations that produce electrical power, high voltage transmission lines that carry power from distant sources to demand centers and distribution lines that connect to individual customers. As a Regional Transmission Organization, MISO assures consumers of unbiased regional grid management.


Reliability Roles

The responsible entity that integrates resource plans ahead of time, maintains load-interchange-generation balance within a Balancing Authority area, and supports interconnection frequency in real time. 

The responsible entity that authorizes the implementation of valid and balanced interchange schedules between Balancing Authority areas, and ensures communications of interchange information for reliability assessment purposes.

The entity that is the highest level of authority who is responsible for the Reliable Operations of the Bulk Electric System, has the Wide Area view of the Bulk Electric System, and has the operating tools, processes and procedures, including the authority to prevent or mitigate emergency operating situations in both next-day analysis and real-time operations. The Reliability Coordinator has the purview that is broad enough to enable the calculation of Interconnection Reliability Operating Limits, which may be based on the operating parameters of transmission systems beyond any Transmission Operator's vision. 

The entity responsible for the reliability of its local transmission system, and that operates or directs the operations of the transmission facilities. 

The entity that develops a long-term (generally 1 year or beyond) plan for the reliability and adequacy of the bulk electric transmission systems within its portion of the Planning Authority area. The responsible entity that coordinates and integrates transmission facilities and service plans, resource plans, and protection systems. 

The entity that administers the transmission tariff and provides Transmission Service to Transmission Customers under applicable Transmision Service agreements.