ATC Methodology Meetings

November 19, 2025

ST ATC Improvement
Materials will be discussed at the monthly CBPI customer meeting

• Meeting Details
• Meeting Materials

October 8, 2025

ATC Upcoming Changes
Materials will be discussed at the monthly CBPI customer meeting

• Meeting Details
• Meeting Materials

July 9, 2025

Short-term ATC Base Case Update
Materials will be discussed at the monthly CBPI customer meeting.

• Meeting Details
• Meeting Materials

July 9, 2024

Data Exhibit Validation Update

On Sept 3, 2024, BPA Posted a final version of the Notice to its ATC Methodology web page.

• Meeting Details
• Proposed Data Exhibit Validation Notice (updated 7/2/24)
• BPA Response to Customer Comments (posted 9/3/24)
• Customer Comments:
  • NewSun
  • NIPPC
  • Seattle City Light
  • PNGC

June 12, 2024

Short-term ATC Project Update

• Meeting Details
• ST ATC Project Update
• Proposed Curtailment Report Flow-based Paths
• Proposed Curtailment Report 1:1 Paths

May 24, 2024

Data Exhibit Validation Update

• Meeting Details
• Notice
• Customer Comments:
  • NIPPC
  • Seattle City Light
  • Shell Energy

January 16, 2024

NERC ATC MODS Update

• Meeting Details
• Documentation Updates
• ATCID version 80
• TRMID version 10

August 30, 2023

New ATC Path Implementation Update

• Meeting Details
• New ATC Path Implementation Update

July 25, 2023

Short-Term ATC Project Updates

• Meeting Details 
• ST ATC Project Update
• Commercial Power Flow & BPA.gov Update

May 24, 2023

North of Grizzly & Managed Paths

• Meeting Details
• Managed Path Update

April 12, 2023

ATC Updates (Short-term)

• Meeting Details
• ST ATC Project Update

December 15, 2022

ATC Updates (Short-term & Long-term)

• ST ATC Project Update
• LT ATC Base Case Update
• 2022 Cluster Study Overview
• TSEP Cluster Study Process Update
• Meeting Details

September 20, 2022

ATC Updates (Short-term & Long-term)

• ST ATC Project Update
• Transmission Usage Update
• TSEP Cluster Study Process Update
• Meeting Details

May 17, 2022

Short-term ATC Project Update

• ST ATC Project Update
• Transmission Usage Update
• Meeting Details

April 14, 2022

ATCID (Short-term) Customer Conference Call

• Meeting Details
• ATCID Streamlining Presentation
• ATCID (v71) - redline

December 15, 2021

ATCID (Short-term) Customer Conference Call

• ATCID Streamlining Presentation
• ATCID (v68) - redline 

December 7, 2021

Long-term ATC & TIP Customer Workshop

• Agenda
• Conditional Firm Service BP (clean)
• Conditional Firm Service BP Overview
• Conditional Firm Service Study Methodology
• 2021 Long-term ATC Base Case Update
• LT ATC Metrics & Proposed Changes to Evaluation of LT TSRs & NT Forecasts
• TSEP Overview
• Planning Redispatch Update

October 26, 2021

Short-Term ATC Project Customer Conference Call

• ST ATC Project Update
• Transmission Usage Update

August 24, 2021

ATCID Improvement Customer Meeting

• ATC ID Streamlining Presentation
• ATC ID (v65) - DRAFT
• ATC ID (v64)

June 23, 2021

Short-term ATC Project Update

• ST ATC Project Update
• Transmission Usage Update

May 26, 2021

Long-term Commercial Planning Customer Update

• Introduction to the Needs Assessment
• Long-term ATC Metrics
• BPA Response to Customer Comments

March 17, 2021

ST ATC Project Update

• ST ATC Project Update
• Transmission Usage Update

December 16, 2020

ST ATC Project Update

• LT ATC Metrics Update
• ST ATC Project Update
• Transmission Usage Update

November 4, 2020

Long-Term ATC

• Meeting Materials

September 24, 2020

Conditional Firm Update

• Meeting materials

September 23, 2020

Long-term & Short-term ATC Metrics and Short-term ATC Project Update

• ST ATC Update
• Transmission Use Update
• ST ATC Metrics
• LT ATC Metrics

September 15, 2020

Heat Maps for Transmission and Load Interconnection

• Presentation Materials

August 20, 2020

Short-term ATC Update

• Short-term ATC Project Update

July 30, 2020

De Minimis Update

• De Minimis Policy Update

June 24, 2020

Short-term ATC Project Update

• Presentation Materials

May 29, 2020

De Minimis Update

• De Minimis Update

March 17, 2020

Short-term ATC & De Minimis Updates

• Short-term ATC Update

February 6, 2020

De Minimis Alternatives Conference Call

January 30, 2020

TC-20 Implementation Update, Short-term ATC Project Update (Updated 1/24/2020)

• Materials

January 28, 2020

TC-20 Implementation Update De Minimis, NT & Intertie Studies (Updated 1/24/2020)

January 17, 2020

Outage-based Adjustments to Short-term TTC Webinar

• Outage-based Adjustments to Short-term TTC (Updated 1/15/2020)

December 12, 2019

TC-20 Implementation Update

• Hourly Firm and Short-Term Available Transfer Capability Project Update (Updated 12/11/2019)

November 12, 2019

• Agenda
• ATC Methodology Update
• 2019 ATC Base Case Update
• Intertie Studies (TC-20 Settlement)
• Transmission Integrated Planning 

September 26, 2019

• Short-term ATC Update (TC-20 Settlement)

August 6, 2019

• Short-term ATC Update (TC-20 Settlement)

June 13, 2019

• Short-term ATC Update (TC-20 Settlement) 
• Long-term ATC Update (TC-20 Settlement) 

January 31, 2019

• Transmission Commercial Update (1/31/19)