Renewable Generation Studies

January 28, 2009

1/28/09 FERC / WestConnect Webinar

Renewable Generation Studies

1/28/09 FERC / WestConnect Webinar 2

Types of Renewable Resource Studies in 2008

Individual Utility Studies

– PNM’s 2008 Collector System Study

State Study Requirements

– Colorado Senate Bill 100

– Nevada RETAAC Study

– Arizona Corporation Commission BTA Renewable

Subregional Study

– SWAT Renewable Transmission Taskforce

January 28, 2009


2008 Colorado SB 100 Study

Tom Green,Public Service Company of Colorado


Senate Bill 100 Status2

Dec 18, 2008 CPUC workshop on SB-100 plans to allow stakeholder input and feedback on priority.

Jan 12, 2009 CPUC workshop for stakeholder response

Feedback from CPUC on priority of CPCN’s on transmission plans

Future CPCN process for SB-100 projects

2. Colorado Senate Bill SB 07-100, codified at C.R.S. § 40-2-126


Zone 4Zone 5

Zone 1

Zone 2

Zone 3

VilasCalumet

Missile Site

Ault

Cherokee

Pawnee

Smoky Hill

Daniels Park

ComancheLamar

345kV

230kV

SB-100 Transmission Plan

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Renewable EnergyTransmission in

Nevada

Brian WhalenTransmission Planning Manager

WestConnect Planning Webinar with FERC January 28th, 2009

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WHY? RPS and NV Energy’sGreen Attitude

6 new projects (135 MW) in-service 2007-08

8 geothermal projects (~280 MW) under development

2 of the U.S.’s largest solar plants now in Southern Nevada

Plan to add 200 to 400 MW of wind. Joint Ventures in place.

Current portfolio consists of 36 projects totaling 586 MW

1,000 MW by end of 2012

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9

Solar Power

Mojave Desert, centered in Southern CA and extending into Southern NV is the U.S. prime solar resource

Nevada is a leader in solar power per capita

Solar technologies improving

Cost per kWh is relatively high but declining

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Local NV Energy Initiatives

Public Utilities Commission of Nevada approved permitting of

both 250 miles of 500 kV and 40 miles of 345 kV, plus siting studies for over 600 miles of new backbone transmission

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State / NV Energy Initiatives

“RETAAC”

Renewable Energy Transmission Access Advisory Committee

Global resource mapping tool for NV developers

– Land use

– Exclusion area

– Resource areas

– Transmission

Phase II Investigation of

funding alternatives

– Merchant

– New State Agency

– Existing State Agencies

– Open season Recommendation of

specific collector systems to pursue.

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RETAAC

BLM & NVE queues

4 types of resources

Trunk line development

Multi- stakeholder Effort BLM NDOW Municipals IOU IPP State Agencies Environmental

Groups

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Regional / Federal / NV Energy Initiatives

WestConnect / SWAT renewables studies (presented by P. Krzykos)

Nevada Siting Issues Significant Constrained

Areas (environmental or government use)

> 80% of Nevada is controlled by Federal Government

Nevada has BLM, USFWS, DOE, DOD, BIA, DOI, …

• Problems with any single agency can stop an entire project.

Potential Solutions Draft DOE §386 Corridor

Process1/3 of total in Nevada

(2000 miles) Federal master agreements

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Questions

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January 28, 2009


PNM’s 2008 Collector System Study

Tom Duane,Public Service Company of New Mexico

Stage 4Continue transmission expansion into wind resource zones

Complete wind collector system for up to 2400 MW

WillardWillardWillardWillard

GuadalupeGuadalupeGuadalupeGuadalupe

Ft. CraigFt. CraigFt. CraigFt. Craig

BABABABA

BelenBelenBelenBelen

VL TapVL TapVL TapVL Tap

Total WindGuadalupe/Willard/Duran: 2450 MW

Existing 345 kV line

New stationExisting stationProposed wind projectExisting or committed wind project


New 345 kV line

• Expand Willard, Duran and Guadalupe 345 kV stations• Build Duran – Guadalupe 345 kV (two lines) (55 mi)• Build Willard – Duran 345 kV (second line) (50 mi)

Total Cost for Stages 0-4: ~$670M

100

200

DuranDuranDuranDuran

700

250

650

GladstoneGladstoneGladstoneGladstone 1200

150

400

Stage 5+Integration with High Plains Express

WillardWillardWillardWillard

Ft. CraigFt. CraigFt. CraigFt. Craig

BABABABA

BelenBelenBelenBelen

GladstoneGladstoneGladstoneGladstone

VL TapVL TapVL TapVL Tap

Total WindGuadalupe/Willard/Duran:

> 4000 MW (?)

• Build HPX 500 kV lines (may not need two circuits from Guadalupe to Ft Craig)• Install 500/230 kV transformer at Gladstone• Install 500/345 kV transformer at Guadalupe• Install 500/345 kV transformer Ft Craig• Install 500/345 kV transformer at Duran

100

200

DuranDuranDuranDuran

>1000250

>1000

150

400


New stationExisting stationProposed wind projectExisting or committed wind project


New 345 kV line

1200

January 28, 2009


SWAT Renewable Transmission Task Force

Peter Kryzkos,Arizona Public Service

Potential Resource Location


SWAT Renewable Transmission Task Force 2009 Study Plan

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


Arizona Solar Queue Comparison (Page 1 of 2)

Company COD POI County

MW Size

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 2008 North Gila Sub Yuma 250 250


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 2012 Jojoba Maricopa 0 500


SRP future Hassayampa Maricopa 0 62.5

SRP future Hassayampa Maricopa 0 40



Arizona Solar Queue Comparison (Page 2 of 2)

Company COD POI County

MW Size

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 3592 12043.5


National Renewable Energy Laboratory (NREL)

Taken Directly from NREL website: http://www.nrel.gov/csp/images/1pct_csp_az.jpg

Concentrating Solar Power Prospects in

Arizona

http://www.nrel.gov/csp/images/1pct_csp_az.jpg

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/windandhydro/windpoweringamerica/maps_template.asp?stateab=az

Taken Directly from NREL website: http://www.nrel.gov/csp/images/1pct_csp_az.jpg

+

Co. COD POI County

MW Size

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




SWAT Renewable Transmission Task Force Refining Solar Resource and Transmission Potential in Arizona

As and Example

Overlay SWAT RTTF conceptual transmission and injection Overlay SWAT RTTF conceptual transmission and injection points with solar resource datapoints with solar resource dataCombine with information from interconnection queue of Combine with information from interconnection queue of regional utilitiesregional utilities


1510 MW1510 MW

530 MW530 MW

8835 MW8835 MW

845 MW845 MW

Conceptual Refined Arizona Solar Resource Zones

DRAFT


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

Renewable Generation Studies

Documents

Transcript of Renewable Generation Studies