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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Scheduling Transmission Service V33 – Energy Imbalance Market (EIM) V4

Bonneville will review proposed changes to these business practices.

Commercial Business Process Improvement (CBPI) Customer Conference Call

Meeting materials will be posted prior to the meeting on the CBPI webpage: https://www.bpa.gov/energy-and-services/transmission/cbpi