2006 CAISO Transmission Plan Presentation to the California ISO - - PowerPoint PPT Presentation

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2006 CAISO Transmission Plan

Presentation to the California ISO Board of Governors January 24, 2007 Gary L. DeShazo Director of Regional Transmission North

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Gary DeShazo/Regional Transmission North 2 1/24/2007

2006 CAISO Transmission Plan

• The first CAISO Transmission Plan is before you today

– Plan presented to stakeholders in early December

• An old era ends

– Individual PTO plans received and reviewed – CAISO review focused on individual projects, not an overall plan – Operational concerns/issues generally were not addressed

• A new era begins with this 2006 Transmission Plan

– Single transmission plan for the CAISO Controlled Grid – PTO and CAISO projects combined into a single plan – Operations, short-term, mid-term, and long-term focus – CAISO review focuses on overall plan – Consistent with sub-regional planning principles

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Gary DeShazo/Regional Transmission North 3 1/24/2007

What Is In the “Plan”

• Annual transmission plan prepared jointly by the CAISO and PTOs

and reviewed by stakeholders

• Coordinated with the PTOs, CEC, and CPUC
• Documents all CAISO and PTO studies

– All projects under $20M approved by CAISO Management – All projects $20M or greater are listed but individually approved by CAISO Board – All projects that are anticipated to be brought before the CAISO Board

• Projects to be considered for “approval” by the CAISO must be in

the Plan

– No more closure letters

• Fifteen year planning horizon
• Five year LCR horizon
• Baseline deliverability studies
• Integrate relevant CEC IEPR recommendations

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Gary DeShazo/Regional Transmission North 4 1/24/2007

2006 “Plan” Highlights

Transmission

• Documents 160 transmission project proposals
• Includes the seven CAISO Transmission Initiatives

presented to the Board in April 2006

Number of Projects

SDG&E 34 PG&E 94 SCE 32

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Gary DeShazo/Regional Transmission North 5 1/24/2007

2006 “Plan” Highlights

Transmission

• Summarizes major California and inter-regional planning

initiatives

– Tehachapi Project – Sun Path Project (Sunrise + Green Path) – LEAPS Project – Trans Bay Cable Project – Midway – Gregg Line – Frontier Line – New British Columbia – California Line – West Coast Cable Project

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Gary DeShazo/Regional Transmission North 6 1/24/2007

2006 “Plan” Highlights

Deliverability

• Phase I

– Evaluation of all generation expected to be in operation in 2006 (58,000 MW)

• Phase II Complete by February 2007

– Phase IIA evaluates all generation in the interconnection “queue” as of March 30, 2005 (22,000 MW) – Phase IIB will include all remaining generation in the interconnection queue

• Phase II Report

– List of new resources that do not pass deliverability test – Amount of non-deliverable capacity for new resources – Conceptual transmission project alternatives that would ensure their deliverability

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Gary DeShazo/Regional Transmission North 7 1/24/2007

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Phase IIA Deliverability Study

14 Generation Pockets Identified

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Gary DeShazo/Regional Transmission North 8 1/24/2007

LCR Outlook

Requirements For 2006 & 2007 Anticipated Trend 2009 & 2011

• 5,000

10,000 15,000 20,000 25,000 30,000 2006 2007 2009 2011 Year

LCR Capacity, MW

PG&E SCE SDG&E

SLIDE 9

Gary DeShazo/Regional Transmission North 9 1/24/2007

2006 “Plan” Highlights

Short-term Plan and Operating Guides

• Short-term Plan

– Analyzes system from 1 to 3 years in advance and recommends to anticipated operations and reliability issues – Focuses on operational gaps; congestion and reliability – 21 recommendations proposed to PTOs based on 2006 summer operation

• Operating Guide

– Consolidates the next year calendar projects

• 53 projects calendared for 2007

– Describes the transmission impacts of the project – Relates each project to the affected Operating Procedures – Provides a work-plan for updating OTC, Operating Procedures, and necessary tools

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Gary DeShazo/Regional Transmission North 10 1/24/2007

Excerpt From the 2006 Operating Guide

# Project Title Region Project Scope System Impact Targeted In- Service Date 1 Ignacio 115/60kV Transformer PG&E – North West Replace the 115/60kV transformers with a larger unit (200 MVA) Reduces T-1 concern and increases reliability to 60kV customers. Removes the Ignacio #1 or #3 Bank SPS. 05/01/2007 2 Lakeville-Sonoma 115kV line PG&E – North West Construct one new 115kV line from Lakeville to Sonoma Sub. Improves L-1 voltage performance at Sonoma and Pueblo substations. 05/01/2007 3 Tulucay 230/60kV Transformer PG&E – North West Install a new 230/60kV transformer (200 MVA) Increases transformer capacity 05/01/2007 4 Fulton-Lakeville 230kV line PG&E – North West Reconfigure transmission to create a Fulton-Lakeville 230kV line. Increases Import capacity into South Geysers, reduces RMR requirement. 11/30/2006 5 Reliability Project: Rio Dell Jct CB 42 & 22 Relay Replcmnt PG&E – North West Replace Relays to increase the rating from 400A to 4/0 AL ratings of 297, 345, 443, 473 Amps Increases import/export capability under some clearance conditions at Humboldt Bay PP. 10/16/2006 6 Reliability Project: Maple Creek CB 42 Relay Replacement PG&E – North West Replace Relays to increase the rating from 300A to 4/0 ACSR ratings of 297, 345, 443, 473 Amps Increases 60kV line capacity. 08/31/2006 7

• W. Sacramento-

Davis Transmission PG&E – North East Reconductor the West Sacramento- Davis 115kV line (215 MVA) Increases import capacity into Woodland and Davis 115kV system. Reduces L-1 concerns under clearance conditions. 10/01/2006 8 Colgate-Rio Oso 230kV Line Re-Rate PG&E – North East Rerate 230kV transmission lines for 3fps (429 MVA) Increase 230kV line capacity. 12/01/2006 9 Davis-UC Davis 60kV to 115kV conversion PG&E – North East Convert two 60kV lines between Davis and UC Davis to 115kV (252 MVA) Increases voltage performance and thermal capacity to UC Davis. 12/01/2006 10 Colgate 230/60kV Capacity Increase PG&E – North East Replace 230/60kV transformer at Colgate Powerhouse with a larger unit and install a spare phase (135 MVA) Part of plan to radialize 60kV system. Once radial, the Colgate T-1 concern will be eliminated. 03/01/2007 11 Pease-Marysville 60kV line PG&E – North East Construct new 60kV transmission line (117 MVA) Part of plan to radialize 60kV system. Once radial, the Colgate T-1 concern will be eliminated. 05/01/2007 12 Mtn Quarries 60kV Tap Reconductor PG&E – North East Reconductor Mountain Quarries 60kV Tap (46 MVA) Increase 60kV line capacity. 05/01/2007

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Gary DeShazo/Regional Transmission North 11 1/24/2007

2006 “Plan” Highlights

• Area assessments

– Detailed assessment and analysis of the CAISO Controlled Grid – Ten-year planning horizon – CAISO staff has identified over 30 LCR, Deliverability, and congestion issues across the Grid – Solutions are being considered for all issues

• Future Plans (2007)

– Scenario assessments – Congestion analysis pre and post MRTU – Resolution to LCR issues – Long-term Firm Transmission Rights – Import allocations within a Resource Adequacy framework – Probabilistic planning (LOLP) for LCR and Capacity Market – Third category of new transmission facilities – Rebuttable presumption

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Gary DeShazo/Regional Transmission North 12 1/24/2007

End of Presentation