ATC Methodology This site contains 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. BPA’s ATCID describes BPA’s implementation of the NERC ATC Standards, as required by NERC Standard MOD-001-1, and applies to ATC and AFC calculations for the NERC ATC Time Period (0-13 months). BPA’s ATC and AFC Methodologies for the Planning Time Period describe BPA’s methodologies for calculating ATC and AFC in the Planning Time Period (beyond 13 months).

ATC Implementation Document (0-13 months) ATC and AFC Methodologies for the Planning Time Period (beyond 13 months) Reference Documents Base Case Updates Customer Communications Meetings Project Updates Customer Comments Contact Information Related Links NERC ATC Standards Order 729

ATC Implementation Document (0-13 months) ATC Implementation Document 5/15/2012 Data Request Form (MOD-001-1 R9) 05/11/2011 TTC Study Report Request Form (MOD-029-1 R4) 05/11/2011 Flowgate Analysis Request Form (MOD-030 R2.1.4) 05/11/2011 Facility Rating Changes Notification Procedure 05/12/2011 Rating Change Notification (MOD- 030-2 R2.5.1) 05/11/2011 TRM Implementation Document 2/13/2012 The forms above are only for use by the specific entities identified in each form. Send all completed forms to nercatcstandards@bpa.gov with the name of the form in the subject line. Transmission Service Providers can also use this mailbox to send BPA their ATCID.