Transmission Availability Reports & Tools

Transmission Services provides reports and tools to assist customers as they reserve and schedule transmission.
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ATC Methodology

Learn more about BPA's Available Transfer Capability Implementation Document (ATCID), ATC and Available Flowgate Capability (AFC) Methodologies for the Planning Time Period and other information pertaining to BPA's management and calculation of ATC and AFC.
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TSR Study & Expansion Process

The TSR Study and Expansion Process (TSEP) is BPA’s process to manage and respond to long-term firm transmission requests on the BPA network. TSEP was formerly known as Network Open Season (NOS).
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Latest News & Events

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Generator Interconnection Transition Cluster Study Scoping Meeting - Rescheduled

Generator Interconnection Transition Cluster Study Scoping Meeting

Evolving Grid Stakeholder Workshop #4

BPA’s Transmission Services has scheduled its next Evolving Grid workshop on Dec. 4, 2024 to update the region on its Evolving Grid initiative.