Slide 1

Convergence Bidding Working Group – 10/22/09

Teleconference Information

Dial-in Number:  (800) 401-8436

International Dial-in:  (612) 332-0418

There is no conference ID number. 

 

Web Conference Information

Web Address:  www.webmeeting.att.com  

Meeting Number:  511.468.2337

Access Code:  93.41.896

Slide 2

Agenda

TIME TOPIC PRESENTER

9:00 – 9:25 Position Limits Li Zhou

9:25 – 9:35 Review of main conclusions from previous AC power flow testing efforts (Stakeholder request)

Khaled Abdul-Rahman

9:35 – 9:40 Schedule / Milestone updates Janet Morris

9:40 – 10:00 Open Q&A

Slide 3

Introduction

This is the fourth in the series of Convergence Bidding Working Group conference calls focused on technical and implementation challenges

Due to the MSC meeting the CAISO rescheduled the 10/15 conference call for 10/22 at stakeholder request

Slide 4

Next Steps

Policy Finalization

Board Documents Posted – October 22 Board Meeting – October 29-30

FERC Filings

Motion for extension of implementation date – November 13 Conceptual design filing – November 13 Tariff filing – Late January 2010

Slide 5

Implementation Milestones

April May June July Aug Sept Oct Nov Dec Jan Feb Mar April May June July Aug Sept Oct Nov Dec Jan Feb

2009 2010 2011

Design Build System Test Market SimRequirements

SIBR rules versions 4.0 (published)

External Business Requirements

Technical Specifications

BPM Change Management

External Training

Milestone Date

Publish Business Requirements Dec 2009

Publish Technical Specifications Q2 2010

Publish BPM Drafts Q3 2010

Begin Market Simulations 10/1/2010

End Market Simulations 1/31/2011

Go-Live 2/1/2011

Slide 6

Position Limits – Background

The CAISO will implement convergence bidding (CB) position limits in the initial implementation of this market element.

The position limits apply at the "corporate entity" level.

Example: If SC1 and SC2 are registered by the same corporate entity AND both of them submit supply convergence bids for a given internal Pnode1, then the sum of those two bid MWs (based on the maximum bid segment MWs) will be used to check against the position limit on Pnode1.

A given CB enabled SCID can submit a single supply convergence bid and a single demand convergence bid at a given location.

Slide 7

Request for Market Participant Feedback

Assumption: Corporate entity has more than one SCID that they use to submit physical bids to the CAISO

Questions:

1. Will one or multiple SCIDs be used to submit convergence bids?

2. If multiple SCIDs, is the intent to use multiple SCIDs to submit multiple bids at a single Pnode or will different CB enabled SCIDs be used to submit bids at mutually exclusive Pnodes/Apnodes?

Slide 8

Request for Market Participant Feedback

3. If multiple convergence bids submitted for a single Pnode using multiple SCIDs, is the intent to allocate a fixed percentage of the nodal limit to each SCID, or is the intent to allow flexibility in the “use” of the position limit by either SCID.

Consider SC1 and SC2 controlled by the same corporate entity. If the overall position limit is 10% and the nodal MW limit is

10MW, is it the intent to have the corporate entity determine that SC1 has a static limit of 7 MWs and SC2 has a static limit of 3 MWs.

Slide 9

AC Power Flow Convergence Testing – Summary

A whitepaper describing AC power flow testing executed by the CAISO has been posted. http://www.caiso.com/2437/243786845a9d0ex.html

The paper describes the scenarios executed, a summary of the results and key conclusions.

The results were discussed on the October 1 Working Group call.

Slide 10

Open Q&A