SWAT Renewable Transmission Task Force

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SWAT Renewable Transmission Task Force

• Peter Krzykos, SWAT RTTF Chairman
• January 13th 2009

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SWAT Renewable Transmission Task Force2008 RECAP

• RTTF is evaluating the entire SWAT area including
  Arizona, New Mexico, Nevada, and IID
• Workshop Meetings
• Workshop Meetings held on April 7th, May 19th,
  and August 12th , 2008
• -- SWAT ATC Assessment
• Renewable resource projection development
• Potential transmission additions are in
  development for the entire SWAT area
• -- Technical Study Evaluation 2025 study case

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ATC (May/June 2008)
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Potential Resource Location
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Potential Transmission Additions
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SWAT Renewable Transmission Task Force Technical
Study

• 2025 Study Year -Potential transmission additions
  are in development for the entire SWAT area with
  20 of the renewable generation capacity as
  agreed during the SWAT Oversight meeting on
  August 19th 2008
• Study case
• 20 Capacity / sensitivity with higher number
• Technical Study Evaluation
• Powerflow analysis
• Post transient analysis
• Stability analysis

Does not include energy efficiency programs and
distributed energy, all values are estimates
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SWAT Renewable Transmission Task Force Power
Flow Study Assumptions

• Update the 2018 WECC full loop base case to form
  a 2025 case scenario
• All 10 year plan transmission and generation
  projects in will be implemented
• Load pocket upgrades will be made to meet 2025
  demand
• All coal, nuclear, hydro, and RMR units will be
  online
• Potential circuit parameters are based on
  projected mileage from the siting/routing map
• Series compensation of potential transmission
  circuits will be comparable to existing series
  compensation on similar length paths
• Flow-ability will be optimized in the EHV system
  using 30-60 series compensation
• Potential renewable generation will operate at
• 1.04 p.u. voltage for 230kV installations
• 1.06 p.u. voltage for 500/345 kV installations
• 0.95 pf lag/lead
• The study will be performed for N-0, N-1
  conditions following WECC/NERC criteria.

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SWAT Renewable Transmission Task Force Post
Transient / Stability Assumptions

• Post Transient
• N-1 conditions and common corridor outages
• 1-3 minutes after disturbance
• Stability
• Full loop WECC case
• Transient voltage and frequency are studied
• Damping of transient and dynamic oscillations
  will be observed

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Arizona Renewable Transmission Task ForceBTA
Response

• Chairman of SWAT RTTF
• Peter Krzykos
• ACC Meeting , Oct 23. 2008
• Prepared for Arizona Corporation Commission

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Renewable Transmission Task Force 5th BTA results

• Dec. 3rd as a part of Fifth Biennial Transmission
  Assessment ACC-issued 2008 BTA Orders emphasize
  renewables
• - Each utility , either alone or in
  cooperation with other interested utilities,
  would develop plans to identify future renewable
  transmission projects and develop plans and
  propose funding mechanisms to construct the top
  three renewable transmission projects. Those
  projects could include joint projects in other
  service territories.

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SWAT Renewable Transmission Task Force 2009
Study Plan

• Meeting held on January 8th 2009
• Renewable potential in Arizona
• Update queue
• Interconnection queue has exceeded Arizona
  Renewable Energy Assessment results in some areas
• Arizona solar queue is now 12,000 MW
• Utilize regional renewable data (NREL, etc.)
• Update potential transmission circuits in Arizona
• Refine conceptual corridors based on resources
  and development potential

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Arizona Solar Queue Comparison (Page 1 of 2)
Company COD POI County MW Size MW Size
Company COD POI County July 2008 Queue December 2008 Queue
TEP 2012 South-Green Valley 138 kV line Pima 250 250
APS 2011 Harquahala Jnc Maricopa 110 110
APS 2011 Panda Liberty line Maricopa 102 102
APS 2010 North Gila Sub Yuma 400 400
APS 2012 Proposed Harquahala Junction Maricopa 400 400
APS 2012 Proposed Harquahala Junction Maricopa 800 800
APS 2008 North Gila Sub Yuma 250 250
APS 2012 Proposed Harquahala Junction Maricopa 500 500
APS 2013 Proposed PV-NG2 500 kV line Yuma 500 500
APS 2011 Gila Bend 230 kV Sub Maricopa 280 280
SRP 2012 Pinal Central Pinal 0 125
SRP 2010 Hassayampa Maricopa 0 180
SRP 2011 Hassayampa Maricopa 0 180
SRP 2012 Hassayampa Maricopa 0 180
SRP 2014 Hassayampa Maricopa 0 180
SRP 2012 Jojoba Maricopa 0 500
SRP 2011 Hassayampa Maricopa 0 125
SRP future Hassayampa Maricopa 0 62.5
SRP future Hassayampa Maricopa 0 40
SRP 2012 Hassayampa Maricopa 0 250
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Arizona Solar Queue Comparison (Page 2 of 2)
Company COD POI County MW Size MW Size
Company COD POI County July 2008 Queue December 2008 Queue
WAPA 2012 ED4 Pinal 0 80
WAPA 2012 ED5 Pinal 0 80
WAPA 2012 Harcuvar 115kV LaPaz 0 125
WAPA 2014 Harcuvar 230kV Maricopa 0 250
APS 2013 Gila Bend 230 kV Sub Pinal 0 250
APS 2012 Casa Grande 69kV Pinal 0 80
APS 2012 Laguna and Yucca 69kV Yuma 0 80
APS 2012 Milligan 69kV Pinal 0 80
APS 2012 Santa Rosa 69kV Pinal 0 80
APS 2012 San Manuel 115kV Pinal 0 320
APS 2011 Pollock Yavapai 0 74
APS 2012 Harquahala Junction Maricopa 0 300
APS 2013 Harquahala Junction Maricopa 0 600
CAISO 2015 Devers - Palo Verde La Paz 0 900
CAISO 2014 Devers - Palo Verde La Paz 0 900
CAISO 2015 Devers - Palo Verde Maricopa 0 900
CAISO 2011 North Gila - Hassayampa Maricopa 0 300
CAISO 2014 Devers - Palo Verde 2 La Paz 0 250
CAISO 2014 Devers - Palo Verde 2 Maricopa 0 250
CAISO 2014 Mohave Switchyard La Paz 0 250
CAISO 2012 Hassayampa - North Gila Yuma 0 280
TOTAL TOTAL TOTAL TOTAL 3592 12043.5
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National Renewable Energy Laboratory
(NREL)Concentrating Solar Power Prospects in
Arizona
Taken Directly from NREL website
http//www.nrel.gov/csp/images/1pct_csp_az.jpg
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Quality of Wind Resources In Arizona
Developed by DOE and NREL

• At 50m elevation, Class 4 or higher is typically
  used for utility scale wind generation (NREL).
• At 80m elevation, Class 3 areas could have
  higher wind power class because of possible wind
  shear (NREL)
• Arizona has predominately Class 3 or lower wind
  resources

Taken Directly from the United States Department
of Energy website http//www.eere.energy.gov/wind
andhydro/windpoweringamerica/maps_template.asp?sta
teabaz
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(No Transcript)
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SWAT Renewable Transmission Task Force Refining
Solar Resource and Transmission Potential in
ArizonaAs and Example
Co. COD POI County MW Size MW Size
Co. COD POI County July 2008 Queue Dec. 2008 Queue
TEP 2012 South-Green Valley 138 kV line Pima 250 250
APS 2011 Harquahala Jnc Maricopa 110 110
APS 2011 Panda Liberty line Maricopa 102 102
APS 2013 Proposed PV-NG2 500 kV line Yuma 500 500
APS 2011 Gila Bend 230 kV Sub Maricopa 280 280
SRP 2012 Pinal Central Pinal 0 125
SRP 2010 Hassayampa Maricopa 0 180
SRP 2011 Hassayampa Maricopa 0 180
SRP 2012 Hassayampa Maricopa 0 180

• Overlay SWAT RTTF conceptual transmission and
  injection points with solar resource data
• Combine with information from interconnection
  queue of regional utilities

Taken Directly from NREL website
http//www.nrel.gov/csp/images/1pct_csp_az.jpg
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Conceptual Refined Arizona Solar Resource Zones
DRAFT
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SWAT Renewable Transmission Task Force Next
Steps

• Refine renewable potential / locations
• Analyze regional renewable resource data
• Evaluate interconnection queue information
• Refine injection points and transmission
  corridors
• Conduct these efforts throughout SWAT footprint
• Evaluate transmission plans for 20 (2018 case
  year) of total projected renewable generation
  built and potentially a 40 (2025 case year)
  scenario.
• Technical Study

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SWAT Renewable Transmission Task Force Next
Steps

• Parallel Process to Address 2009 BTA Orders
• ORDERS
• Develop ways in which new transmission projects
  can
• Be identified
• Approved for construction
• Financed
• Identify top three potential renewable
  transmission projects for each Commission-regulate
  d utility service territory.
• Develop plans and propose funding mechanisms to
  construct the top three renewable transmission
  projects for each Commission-regulated utility.
• Renewable Zone Identification Group Formed
• Further refine renewable energy zones in Arizona
• Refine based on several filters (land ownership,
  environmental concerns etc.)

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SWAT Renewable Transmission Task Force

• Peter Krzykos, SWAT RTTF Chairman
• January 13th 2009