NERC ATC Standards Overview

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NERC ATC StandardsOverview

• WECC MIC MIS ATC TF
• Chair, W. Shannon Black, SMUD
• Chuck Falls, SRP
• Jerry Smith, APS
• Abbey Nulph, BPA
• Dave Lunceford, CAISO

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How We Got Here

• Order 890
• The market complained
• ATC
• Not transparent
• Could not be replicated
• Not granular enough
• FERC said
• Make it so!
• Do it now!
• Give it to me for Christmas!
• NERC responded
• If you want it badly we can do that!
• NAESB responded
• Were right behind NERC. (Posting issues.)

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How We Got Here

• NERC responded
• If you want it badly we can do that!
• MOD-01 Umbrella for All ATC
• MOD-04 CBM
• MOD-08 TRM
• MOD-29 Rated System Path
• MOD-28 Area Interchange
• MOD-30 Flowgates
• NAESB is responding

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Retirement

• MOD-01
• Now contains MOD-02 and MOD-03
• MOD-04
• Now contains MOD-05/6/7
• MOD-08
• Now contains MOD-09
• MODs 28/29/30
• Now contain FAC-12 and FAC-13

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Caution Process in Motion!

• NERC Process
• Write it
• Post it
• Get Comments
• Answer the Comments
• ALL of the Team answers / drafts responses
• Even those that admittedly do not understand the
  WECC Way

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Three Rules to Live By
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Rule 1DANGER!

• Be careful what you ask foryou may get it!
• If you comment you open the door to ALL giving
  you a response.

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Rule 2Make Positive Comments

• Positive aspects
• If you like it say so!
• Lets keep the good stuff!
• Be part of the
• Otherwise Silent majority

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Rule 2Suggest a Remedy

• How shall we fix it?
• Suggest a redraft
• No whining
• Be positive!!
• You are the expert

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Caution Process in Motion!

• NERC Process
• 11/29/07
• WECC Team Drafts Comments
• 12/5/07 (Approximate)
• Sign on with WECC for support (or)
• File Entity-specific comments if unique.
• 12/14/07 Comment Due
• 1/08 NERC Reviews
• 2/1/08 30 Day Pre-Ballot
• 3/3/08 10 Day Ballot Window
• 2008-2009
• NERC Requests 12 Months to Implement

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How It Comes Together(Sample RSP) ATC TTC
TRM CBM ETC

• ATC
• TTC (MOD-29)
• TRM (MOD-08)
• CBM (MOD-04)
• ETC (MOD-29)

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MOD-01 Umbrella

• Transmission Operator
• Pick one for each Posted Path.
• Transmission Service Provider
• Implements the TOs selection
• Provide information on a specified cycle
• 15 elements
• Calculate and update at specified intervals
• Specified blocks hourly, daily, monthly
• Write it down keep a record
• Verifiable results

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MOD-28 Area Interchange Methodology(Southeast)
ATC TTC TRM CBM ETC

• Transmission Operator
• Use a defined model
• Specified data, periods and process
• TTC changes more frequently than WECC
• Does not include a Native Load protection
• Uses NITS
• Includes Native Load in the TTC variable (??)
• Communicate to the TSP
• Transmission Service Provider
• Calculate Firm / Non-Firm ATC and ETC
• Write it down!

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MOD-29 Rated System Path(WECC) ATC TTC
TRM CBM ETC

• Transmission Operator
• Models the Posted Path
• 12 criteria that mirror the WECC Path Rating
  Process
• Sets the TTC per the model (or)
• Allowed exceptions such as SOL, Existing Rating
• Tells the Transmission Service Provider

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MOD-29 Rated System Path(WECC) ATC TTC
TRM CBM ETC

• Transmission Service Provider
• Calculates ETC
• Native Load (Network Load)
• Grandfathered contracts
• Point-to-point reservations
• Roll over rights
• Other Services
• ETC Firm and Non-Firm
• ATC Firm and Non-Firm
• Postbacks NAESB
• Counterflows Optional

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MOD-30 Flowgates(ISOs, RTOs, Large
Transmission) ATC TFC TRM CBM ETC

• Transmission Operator
• Determine and update the Flowgates as prescribed
• Tell the TSP
• Transmission Service Provider
• Calculate the AFC using impacts of power flows
• Firm and Non-Firm
• Using specified method
• Specified cycle
• Convert AFC to ATC
• Write it down!

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MOD-04 CBM ATC TTC TRM CBM ETC

• Load Serving Entity
• Sets the quantity by mandate or study
• Tells the TSP to reserve it
• Requests a schedule if needed
• Transmission Service Provider
• Describes the procedures for use
• How allocated to each path
• Actually accepts the schedule
• Default usage allowed by LSE even if not reserved
• Write it down!

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MOD-08 TRM ATC TTC TRM CBM ETC

• Transmission Operator
• Calculates TRM
• They determine their own method
• Two elements
• Uncertainty and Reserve Sharing
• Describe how it is allocated across each path
• Write it down!

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Questions?

• Ask Chuck