APS/SRP 2 nd Quarter Stakeholder Meeting for Transmission Planning FERC Order 890 SRP Attachment K APS Attachment E APS Deer Valley Facility Phoenix, Arizona

APS/SRP 2nd Quarter Stakeholder Meeting for Transmission Planning

FERC Order 890 SRP Attachment K APS Attachment E

APS Deer Valley FacilityPhoenix, ArizonaJune 18, 20159 AM -12 PM

Agenda

1. Welcome, Introductions, and Stakeholder Meeting Overview

2. Status of Action Items - 12/18/2014 Joint APS/SRP 4th Quarter Public Planning Meeting

3. Purpose of Today’s meeting – APS Planning

4. Purpose of Today’s meeting – SRP Planning 5. Stakeholder Questions/Comments

6. Action Items

2

2. Status of Action Items

• There were no action items captured at the 4th Quarter Stakeholder meeting held on 12/18/2014

3

3. Purpose of Today’s meeting

• Per APS’s OATT, APS conducts the 2nd quarter public planning meeting to– A) review its current transmission study plan– B) provide an opportunity for transmission customers to

update their loads, resources and other data that were submitted by September 1, 2014

– C) provide an opportunity for stakeholder input on any aspect of the study plan

– D) review any stakeholder proposals previously submitted to APS for study plan alternatives

– E) invite submittal of additional stakeholder study plan proposals for review and discussion

– F) provide updates on APS’s planned transmission projects

4

3.A. APS’s Study Plan

• APS has two distinct, but related, transmission study processes– NERC Compliance– APS’s Annual Planning

• The difference between the two plans:– NERC Compliance:

• Minimum 2 seasons, 2 discrete years (near and long term); all cases examine P0-P7 (formerly Category A – D)

– APS’s annual planning: 1 season, 10 consecutive years; N-0 and N-1

– Annual plan is used as starting point for NERC Compliance

• Working on combining TPL assessment and Annual Planning for future years

5

3.A. 2014 NERC Compliance StudiesPeak Load Assessment – Summer

NERC STANDARD STUDIES PERFORMED

TPL -001(n-0) Thermal Transient Stability Post Transient

2019 PEAK X

2019 MLSC X

2024 PEAK X

2024 MLSC X

TPL-002 (n-1)

2019 PEAK (Lines, xfmrs, gens) X X X

2019 MLSC (Lines, xfmrs, gens) X X

2024 PEAK (Lines, xfmrs, gens) X X X

2024 MLSC (Lines, xfmrs, gens) X X

TPL-003 (n-2)

2019 Stuck Breaker/Breaker Failure X X X

2019 N-1-1 X X X

2019 Bus Section X X X


2024 N-1-1 X X X

2024 Bus Section X X X

TPL-004 (n-xx)

2019 Major Substations With/Without Generation X X X


2019 Common Corridor X X X

2024 Major Substations With/Without Generation X X X



6

3.A. 2014 NERC Compliance StudiesLow Load Assessment

NERC STANDARD STUDIES PERFORMED

TPL -001(n-0) Thermal Transient Stability Post Transient

Near-Term TO BE DETERMINED X

Long-Term TO BE DETERMINED X

TPL-002 (n-1) Near-Term TRANSMISSION LINE X X XNear-Term XFMR X X XNear-Term GENERATION X X XNear-Term REACTORS X XLong-Term TRANSMISSION LINE X X XLong-Term XFMR X X XLong-Term GENERATION X X XLong-Term REACTORS X X

TPL-003 (n-2) Near-Term Stuck Breaker X X XNear-Term N-1-1 X X XLong-Term Stuck Breaker X X XLong-Term N-1-1 X X X

TPL-004 (n-xx) Near-Term Loss of All Generation Units at a Station X X XNear-Term Common Corridor X X XLong-Term Loss of All Generation Units at a Station X X XLong-Term Common Corridor X X X

7

3.A. NERC Compliance Results?

• 2014 Results?– APS is fully compliant with NERC Transmission

Planning Standards

• 2015 Progress?– Case building complete– DYD files being finalized– Perform study work starting in July/August

8

3.A. 2015 NERC Compliance Study Methodology

NERC Compliance Studies Cases• 2016, 2020 & 2024 Summer Peak Cases• Off-peak Case is Low Load and High Import (shoulder case with

low generation in the Phoenix Metro Area)– 2017 Light Spring case; one case in the near-term– High ratio of renewable generation to overall generation on-line

• Following analyses are conducted:– Thermal– Post-Transient– Short-Circuit– Transient Stability

9

3.A. 2015 NERC Compliance Studies

• TPL-001-4 combined previous TPL-001 through TPL-004– No longer Category A, B, C, & D– Now P0 through P7

• Covers all scenarios from N-0 to N-1-1• Also includes Multiple Contingencies due to relay or

breaker failures

– Requires more cases/scenarios– Includes short-circuit analysis

10

3.A. APS TPL Plan for 2015 Study

Near-Term Long-TermYear 1

(2016)2

(2017)3 4 5

(2020)6 7 8 9

(2024)10

Steady State

Peak Load (Summer) X X X

Peak load sensitivity X X

Off-Peak (Spring) X

Off-Peak sensitivity X

Stability

Peak Load (Summer) X ?

Peak load sensitivity X

Off-Peak (Spring) X

Off-Peak sensitivity X

11

3.A. 2016-2025 Ten-Year Plan Methodology

• Coordinated Base Cases– 2015HS – SASG/AZ coordinated case used to build heavy

summer 2016-2019– 2020HS – AZ coordinated case used to build heavy summer

2021-2023– 2024HS – SWAT/AZ coordinated case used to build heavy

summer 2025 (same SWAT updated case submitted to WestConnect)

– The intermediate cases are APS/SRP coordinated

• 69kV transmission models incorporated• Most up-to-date forecasts for peak summer loads• N-0 and N-1 analysis conducted for all ten years

12

Note: AZ coordinated cases also included IID

3.A. 2016-2025 Ten-Year Plan Status

• AZ Seed cases are complete (2016HS, 2020HS, 2024HS)

• Intermediate cases are in development• Ten-Year plan studies will be performed in the

summer/fall• Draft results typically available during 4th

Quarter Stakeholder meeting• Ten-Year Plan filed by the end of January• BTA Studies will also be completed and filed

– 10th Year Snapshot & Extreme Contingency– RMR study needs are being evaluated

13

3.B. Customer Load/Resource Updates

• APS has all load/resource data from Network Customers and has incorporated them into the base cases

• Should you like to provide information for the future APS planning cycles, please see critical dates on the next slide

14

Jan.

Feb.

Mar.

Apr.

May

Jun.

Jul.

Aug.

Sep.

Oct.

Nov.

Dec.

10yr Plan – Filed with ACC by Jan. 31 10yr. Plans filed by others

APS Corporate Load Forecast

Stakeholder Input

APS Corporate Load Forecast – Post Summer

Sep. 1st – Network Transmission Customers and all other Transmission Customers Load & Resource Forecast

10yr Plan – New load forecast sensitivity

Develop 10yr base cases from AZ seed cases

10yr Plan study effort – Determination of projects, timings, and scope

4th Quarter Stakeholder Meeting – Review draft of current 10yr plan, discuss Economic Study requests, receive

stakeholder input

Planning Calendar for Ten-Year Planning CycleAPS Transmission

Planning – 10 Yr Plan

Arizona Utilities coordinated seed case development

2nd Quarter Stakeholder Meeting – Stakeholder input on studies, request study

alternatives, updates on current projects

Other Coordination Activities Throughout

the Year

· APS/SRP Coordination Meeting

· APS/WAPA Coordination Meeting

· WestConnect Meetings

· SWAT Meetingso AZTSo New Mexicoo Eldorado Valleyo Transmission Corridoro Short-circuit

Oct. 31st – Deadline to submit Economic Study Requests for 4th Quarter Meeting

review

15

3.B. Feedback on the Plan?

• Feedback on the Plan or methodologies– NERC Reliability– Ten Year Plan

• See next slide to see how APS would evaluate plan submittals or alternatives.

16

What Type of Study?1

Does Transmission Provider’s system

meetNERC/WECC

criteria?

No

Does Transmission Provider’s system meet local reliability criteria?

Yes

Transmission Provider determines facilities

needed with Stakeholder input

No

Transmission Provider coordinates with Sub-

Regional Planning Group

Yes

Economic Reliability

Transmission Provider

Evaluation

Regional

TEPPC evaluates with Stakeholder

input

Transmission Provider Economic

Study

Customer Choice of Study at Customer’s

expense

Local2

TEPPC determines high priority, performs

study

High priority

Not high priority

TEPPC determines not

high priority

Study results documented in a report and reviewed

by Customer and Transmission Provider



1. Generator Interconnection Request studies are performed pursuant to the Large Generator Interconnection Procedure contained in the Transmission Provider’s Open Access Transmission Tariff (OATT). Transmission Service Requests are also performed pursuant to OATT procedures.

2. All requests for economic planning studies received by the Transmission Provider are forwarded to TEPPC for inclusion in the TEPPC Master List . TEPPC will evaluate only those requests that have regional impacts.

Transmission Planning Process

Exhibit 1 – APS Attachment E

17

3.B. Review Stakeholder proposals previously submitted

• APS received no stakeholder proposals in 2014 or prior to this meeting.

18

3.B. Submittal of additional study plan proposals

• If you have study ideas for APS to consider, please send a detailed message to: [email protected]

• Please include (at a minimum)– Your Name/Company/contact info (e-mail/phone #)– What the purpose of the study request is? And how will

the results be used?• E.g. Determine how much load the system can accommodate without

new generation/transmission? Results will be used to inform developers where there may be opportunities for additional commercial development without transmission/generation investment.

– What year(s) and season(s) is of interest?– What type of study – reliability (power flow only?)

economic?

19

mailto:[email protected]

3.B. APS Ten-Year Plan Projects 2015-2024

Transmission PlanFiled on Jan. 30, 2015

20

3.B. Changes since 2015 Plan was filed

• Two projects completed– Hassayampa-North Gila #2 500kV line

• Energized May, 2015• New Path 49 (EOR) rating of 10,100 MW

– Palm Valley-Trilby Wash 230kV line• Energized April, 2015• Trilby Wash now providing new source for northwestern part of valley

• Actively under construction– Palo Verde-Delaney-Sun Valley 500kV– Sun Valley-Trilby Wash 230kV– Bagdad 115kV Relocation

21

In-Service: Hassayampa-North Gila 500kV #2

Line2016: Delaney-Palo Verde 500kV Line Delaney-Sun Valley 500kV Line2017: Bagdad 115kV Line Relocation Mazatzal 345/69kV Substation2018: Morgan-Sun Valley 500kV Line Ocotillo Modernization Project

22

23

In-service: Palm Valley-Trilby

Wash 230kV Line2016: Sun Valley-Trilby Wash

230kV Line2018: Ocotillo Modernization

Project2026: Morgan-Sun Valley

230kV Line

24

In-service: Hassayampa-North Gila

500kV #2 Line2018: North Gila-Orchard

230kV Line

Bulk Transformer Additions/Replacements

Description Year

Two 100MVAR Reactors at Four Corners 230kV 2015/2016

Trilby Wash 230/69kV Transformer (in-service) 2015

Sun Valley 500/230kV Transformer 2016

Mazatzal 345/69kV Transformer 2017

Prescott 230/115kV Transformer #3 2017

North Gila 500/230kV Transformer 2018

Orchard 230/69kV Transformer 2018

Orchard 230/69kV Transformer #2 2018

Saguaro 230/69kV Transformer 2021

25

APS Planning - Study Requests

• Generation Interconnection Requests• Transmission Interconnection Requests• Transmission Service Requests• Economic Study Requests

26

3.C. Generation Interconnections

• Active Generation Interconnection requests– APS OASIS contains Generation Interconnection

Queue• http://www.oatioasis.com/azps/index.html• 2 Solar projects - 220 MW• 1 Wind projects - 1000 MW• 1 Wind/Solar project – 101 MW wind/60 MW solar• 3 Natural Gas projects – 2429 MW

Note: Generator Queue information as of 4/23/15

27

http://www.oatioasis.com/azps/index.html

A - HAA-NG 500kV line 1 projects 200 MWB - Gila Bend/Buckeye 2 projects 654 MWC – Metro Phx 1 projects 595 MWD - FC 1 projects 1200 MWE - Northern AZ 2 projects 1161 MW

Note 1: Generator Queue information as of 4/23/15Note 2: Figures displayed may not represent complete queue

A B

C

E

D

28

3.D. Transmission Service Requests

• 1 Wires to Wires Interconnection Requests

• 42 Transmission Service Requests

29

3.E. Economic Study Requests

• Currently no Economic Study Requests

30

3.F. APS Planning – Comments & Questions

• Stakeholder comments/questions on 2014 Study Results or 2015 Study Requests

• Requests can be made at any time to:– [email protected]

31


4. Purpose of Today’s Meeting

• Per SRP’s OATT, SRP conducts the 2nd quarter public planning meeting to:A) Review its current transmission study plan

– provide an opportunity for transmission customers to update their loads, resources and other data – review any stakeholder proposals previously submitted to

SRP for study plan alternativesB) Provide updates on SRP’s transmission projects (Ten Year Plan) C) Provide updates on the generation study requestsD) Provide updates on the transmission study requestsE) Provide updates on the economic study requestsF) Invite stakeholders to submit additional study proposals

3212/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning

4.A. – SRP’s Study Plan

• SRP has two distinct, but related, transmission study plans– NERC Compliance– SRP’s budgetary planning

• The difference between the two plans:– NERC Compliance: 3 seasons/scenarios, 2 discrete years (near

and long term)– SRP’s annual planning: 1 season, 10 consecutive years (first 6

years are for budget, remaining 4 for compliance purposes)

• The similarities between the two plans:– Similar load forecasts, demand response– They are reliability studies



• Coordinated Base Cases (Seed Cases)– 2016 – AZ coordinated case used to build 2016-2019– 2020 – AZ coordinated case used to build 2020-2024– 2024 – AZ coordinated case used to build 2025– The intermediate cases are APS/SRP coordinated– SRP NERC Compliance cases– 2017 and 2021

• 69kV transmission models incorporated• Most up-to-date forecasts for peak summer loads



NERC Compliance Studies Cases• 2017 & 2021 Summer Peak & Off-peak Cases• 2017 & 2021 Off-peak Cases are Low Load (spring/winter

conditions) and High Import (shoulder cases with low generation in the Phoenix Metro Area)

• Following analyses are conducted:– Thermal analysis– Post-Transient– Transient Stability


4.A. NERC Compliance Studies

NERC STANDARD Type of Studies Completed

TPL-001 (N-0) Thermal Transient Stability Post-transient

2017 Peak X

2017 Low Load X

2017 High Import X

2021 Peak X

2021 Low Load X

2021 High Import X


2017 Peak X X X

2017 Low Load X X X

2017 High Import X X X

2021 Peak X X X

2021 Low Load X X X

2021 High Import X X X


4.A. NERC Compliance StudiesNERC STANDARD Type of Studies Completed


2017 Bus outages X X X

2017 Contingency of towers X X X

2017 Stuck breaker & protection system failure (SLG fault) X X X


2017 N-1-1 X X X

2021 Bus outages X X X

2021 Contingency of towers X X X

2021 Stuck breaker & protection system failure (SLG fault) X X X


2021 N-1-1 X X X

TPL-004 (N-X) Thermal Transient Stability Post-transient

2017 Substations with generation X X

2017 Common Corridor/Substation without generation X X

2017 Stuck breaker & protection system failure (3PHG fault) X X

Note: TPL-003 Studies performed on Peak, Low Load & High Import cases


4.A. NERC Compliance Results

• 2014 Results– 2014 NERC Compliance Studies were finalized by beginning

of November of 2014

• 2015 Progress– Case building under way– TPL-001-4 effective 1/1/2016– SRP will perform the studies for TPL-001-4 in order to

compliant after 1/1/2016– Besides nomenclature differences, major addition is

requirement for short circuit studies


4.A.– Stakeholder Proposals

• SRP received no stakeholder proposals in 2014 or prior to this meeting

4.A. – Customer Load/Resource Updates

• No customers provided load/resource data in September 2014

• SRP received no stakeholder proposals in 2014 or prior to this meeting.

• If you like to provide information for the future SRP planning cycles, please see critical dates on the next slide



4.B. SRP Ten Year Plan 2015-2024

• SRP has Filed its Ten Year Plan as of January 30, 2015


4.B. 2016-2025 Ten Year Plan Methodology

• Coordinated Base Cases

– See NERC Compliance Methodology slide #6

• 69kV transmission models incorporated

• Most up-to-date forecasts for peak summer loads

• TPL-001 & TPL-002 Studies Conducted for all ten years


EXISTING LINES

FUTURE LINESFUTURE 500kV SUBSTATION

EXISTING 500kV SUBSTATION

NEVADA

WESTWING

KYRENE

SILVERKING

CORONADO

CHOLLA(APS)

MEADMcCULLOUGH

MARKETPLACE

BROWNING

HASSAYAMPA

RUDDPALO VERDE

PINAL WEST

JOJOBA

DUKE

NAVAJO GS

SUGARLOAF

MOENKOPI(APS)

YAVAPAI(APS)

PINNACLE PEAK (APS)

PINALCENTRAL

SUNZIA (SWPG)

2018

CentralNew Mexico

SPRINGERVILLE(TEP)

DUGAS(APS)

500kV System

345kV

MORGAN(APS)

2015-2024

CEDAR MT(APS)

2016

ELDORADO

MOHAVE

230kV

PERKINS

All Changes since January 2014 Ten Year Plan shown in red

2024


Price Road Corridor Project

BRANDOW

WARD

CORBELL

ALEXANDER

WESTWING

KYRENEANDERSON

WHITETANKS

ORME

SRPPINNACLE PEAK

PAPAGO

LIBERTY(W.A.P.A.)

AGUAFRIA

DEERVALLEY

(APS)

ROGERS

TO APSOCOTILLO

TOAPS

PINNACLE PEAK

TOW.A.P.A.

PINNACLE PEAK

W.A.P.A.

W.A.P.A.

W.A.P.A.

KNOX

SCHRADER

RUDD

230kV System

SANTAN

THUNDERSTONE

BROWNING

EXISTING 230kV SUBSTATIONS

FUTURE 230kV CIRCUIT

EXISTING 230kV CIRCUIT

FUTURE 230kV SUBSTATIONS

GENERATING STATION

DOUBLE CIRCUIT, PHASE TIED LINE

GOLDFIELD

ABEL

DINOSAUR

2021

DESERTBASIN

PINALCENTRAL

RANDOLPH

2021PFISTER

TBD

2015-2024

ToSilver King

RS-28(2017)

2017

TBD

RS-27(TBD)

TO SANTAROSA(APS)

TO CASAGRANDE

(APS)

All Changes since January 2014 Ten Year Plan shown in red 4512/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning

115kV

MIAMI

PINAL

SUPERIOR

SPURLOCK

MOONSHINE

ELLISON

FRAZIER

RAYMORRIS

KEARNY

HAYDEN

STEWARTMOUNTAIN

MORMONFLAT

HORSEMESA

GOLDFIELD230kV

OAKFLAT

PINTOVALLEY

KNOLL

TO APACHE(AEPCO)

TOTHUNDERSTONE

COOLIDGE(W.A.P.A.)

TOSILVER KING

500kV

SILVERKING230

ASARCO

GENERATING STATION

EXISTING LINE

FUTURE LINE

EXISTING SUBSTATION

FUTURE SUBSTATION

EasternMining Area

CARREL

BONNEYBROOK(APS)

TRASK

CARLOTA

ROOSEVELT

RS-30 115KV(2019)

230kV(2019)

2015-2024

TRANSFORMER

RS-29 230kV(2019)

2019

All Changes since January 2014 Ten Year Plan shown in red 4612/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning

4.B. SRP changes since 2014 Plan• Completed Projects

– Pinal West – Duke – Pinal Central 500kV line– Pinal Central – Browning 500kV line– Pinal Central – Randolph 230kV line– Desert Basin – Pinal Central 230kV line– Pinal Central 500kV and 230kV Substation– Duke 500kV Substation– Browning – Rogers 230kV line

• New Projects– Hassayampa – Pinal West 500kV Jojoba line loop in 2016– Browning – Corbell and Santan – Rogers 230kV line in 2020– Hassayampa – Pinal West 500kV #2 in 2024

• Delayed Projects– Superior-Silver King 115kV re-route was 2015, now 2017– Schrader-RS28 230kV line was 2016, now 2017


4.B. SRP changes since 2014 Plan• Delayed Projects

– RS28 230kV substation was 2016, now 2017– Eastern Mining Expansion was 2018, now 2019– Sun Zia was 2017, now 2018– Silver King-RS29 230kV was 2018, now 2019– RS29 230kV substation was 2018, now 2019– RS29-RS30 115kV was 2018, now 2019– RS30 115kV substation was 2018, now 2019– Ellsworth Technology Corridor was 2019, now TBD– New Superior-New Oak Flat 230kV was 2021, now TBD– New Oak Flat-Silver King 230kV was 2021, now TBD– Abel 500kV Substation was 2020, now TBD

• Removed Projects– None


4.C. – 4.E. Transmission Planning Study Process SRP evaluates plan submittals or alternatives according to the following flowchart.

What Type of Study?1

Does Transmission Provider’s system

meetNERC/WECC

criteria?

No

Does Transmission Provider’s system meet local reliability criteria?

Yes



No

Transmission Provider coordinates with Sub-

Regional Planning Group

Yes

Economic Reliability

Transmission Provider

Evaluation

Regional

TEPPC evaluates with Stakeholder

input

Transmission Provider Economic

Study

Customer Choice of Study at Customer’s

expense

Local2

TEPPC determines high priority, performs

study

High priority

Not high priority

TEPPC determines not

high priority

Study results documented in a report and reviewed

by Customer and Transmission Provider



1. Generator Interconnection Request studies are performed pursuant to the Large Generator Interconnection Procedure contained in the Transmission Provider’s Open Access Transmission Tariff (OATT). Transmission Service Requests are also performed pursuant to OATT procedures.

2. All requests for economic planning studies received by the Transmission Provider are forwarded to TEPPC for inclusion in the TEPPC Master List. TEPPC will evaluate only those requests that have regional impacts.

Transmission Planning Process

Exhibit 1 – SRP Attachment K


4.C.-E. SRP Planning - Study Requests

• Generation Interconnection Requests

• Transmission Interconnection Requests

• Transmission Service Requests

• Economic Study Requests


4.C. SRP Planning –Interconnection Requests (Transmission)

• Currently there are no Transmission Interconnection Requests under study


4.C. Interconnection Requests (Generation)

A. EAST VALLEY2- Solar Projects 100MW

B. EMA 115kV AREA3- Solar Projects 105MW

Generation Interconnection Requests listed on this slide are for SRP solely owned transmission


BA

4.D.-E. SRP - Transmission Service and Economic Study Requests

• SRP received one Transmission Service Request• There are no Economic Study Requests


4.F. Submittal of Additional Study Plan Proposals

• If you have study ideas for SRP to consider, please send a detailed message to: [email protected]

• Please include (at a minimum):– Your Name/Company/contact info (e-mail/phone #)– What the purpose of the study request is? And how

will the results be used?– What year(s) and season(s) is of interest?– What type of study – reliability (power flow only?),

economic?



4.G. SRP Planning – Comments & Questions

• Stakeholder comments/questions on 2015 Study Results


5. Stakeholder Questions & Comments

• Open discussion

• WestConnect –– http://www.westconnect.com/documents.php

• APS OASIS –– http://www.oatioasis.com/azps/index.html

• SRP OASIS –– http://www.oatioasis.com/srp/index.html

56

http://www.westconnect.com/documents.php

http://www.oatioasis.com/azps/index.html

http://www.oatioasis.com/srp/index.html

6. Action Items

• Review any action items, assignments, and due dates

57

Documents

APS/SRP 2 nd Quarter Stakeholder Meeting for Transmission Planning FERC Order 890 SRP Attachment K APS Attachment E APS Deer Valley Facility Phoenix, Arizona