Transmission

Transmission owners can turn over operational control of their facilities to the ISO. The ISO and adjacent balancing authorities may allow certain generating facilities to dynamically schedule across interties into the ISO balancing authority area, so these facilities can participate in the ISO real-time market.

Transmission planning

The ISO actively engages stakeholder and public input and uses the best engineering analysis possible to plan for short- and long-term infrastructure needs. Learn more about the ISO’s infrastructure requirements and planning process.

Transmission operations

The ISO’s operations reporting, coordination and maintenance efforts ensure a reliable system. Find information on transmission access charges, availability performance reports and maintenance procedures and coordination.

Participating transmission owner (PTO)

Transmission owners can elect to turn operational control of their facilities over to the ISO and collect access charges from users. Learn more about the process and requirements.

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Interregional transmission coordination

Regional entities throughout the western interconnection collaborate with the ISO during their transmission planning processes to ensure regional transmission stability and efficiency. Find meeting information, agendas and support documents for the regional coordination effort.