1. APS/SRP Stakeholder Meeting For Transmission Planning FERC Order 890 OATT Attachment K (APS Attachment E)
APS Transmission Planning
SRP Transmission Planning
Phoenix, Arizona
June 24, 2010

2. APS & SRP 2nd Quarter Stakeholder Meeting
Agenda
Welcome, Introductions, and Meeting Overview
Status of Action Items-12/18/09 Joint APS/SRP 4th Quarter Public Planning Meeting
APS Planning
APS Planning Calendar & Methodology
APS Filed Ten-Year Plan and Renewable Transmission Projects Review
2010 Study Assumptions
Interconnection Requests and Transmission Service Requests
Requests received for Economic Planning Studies
Stakeholders invited to submit requests for additional transmission studies
Comments/Questions
SRP Planning
SRP Planning Calendar & Methodology
SRP Filed Ten-Year Plan Review
SRP Transmission Projects for Renewable Generation
Requests Received for Economic Planning Studies
Current Activities Update
Stakeholder Questions/Comments
Action Items
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 2

3. APS & SRP 2nd Quarter Stakeholder Meeting
Welcome
Introductions
Meeting Overview
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

4. APS & SRP 2nd Quarter Stakeholder Meeting
2. Status of Action Items
Request the Operating Agent for JPP (Joint Participation Projects) to include the other owners on OASIS.
Interconnection Queues are FERC mandated documents and do not include owners for JPPs
Request APS and SRP to explore opportunities to consolidate or coordinate the Order 890 Stakeholder meetings with other scheduled meetings.
Ongoing
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

5. 3.a. APS Planning Calendar & Methodology
WECC/TEPPC/WestConnect Planning Calendar
APS Planning Calendar
Planning Process/Methodology
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APS & SRP 2nd Quarter Stakeholder Meeting 5

6. APS & SRP 2nd Quarter Stakeholder Meeting
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7. APS & SRP 2nd Quarter Stakeholder Meeting7
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APS & SRP 2nd Quarter Stakeholder Meeting

8. APS & SRP 2nd Quarter Stakeholder Meeting
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APS & SRP 2nd Quarter Stakeholder Meeting 8

9. 3.b. APS Ten Year Plan Projects 2010-2019
Transmission Plan Filed on Jan. 29, 2010
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 9

10. APS & SRP 2nd Quarter Stakeholder Meeting
2009 (In-Service):
Dugas & Sugarloaf 500/69kV substations
Milligan 230/69kV substation
2010:
Morgan 500/230kV substation (In-Service)
Morgan-Pinnacle Peak 500kV line
2012:
Delany-Palo Verde 500kV line
Flagstaff 345/69kV substation
TS12 230/69kV substation
2013:
Mazatzal 345/69kV substation
2014:
Delany-Sun Valley 500kV line
Hassayampa-N.Gila 500kV line
D. Basin-Pinal Central 230kV line
Pinal Central-Sundance 230kV line
Bagdad 115kV relocation
2016:
Sun Valley-Morgan 500kV line
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

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12. APS & SRP 2nd Quarter Stakeholder Meeting
2010:
Morgan-Raceway 230kV (in-service)
2011:
Raceway-Pinnacle Peak 230kV
2014:
Scatter Wash 230/69kV substation
Sun Valley-Trilby Wash 230kV
2015:
Trilby Wash-Palm Valley 230kV
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 12

13. APS & SRP 2nd Quarter Stakeholder Meeting
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APS & SRP 2nd Quarter Stakeholder Meeting 13 13

14. APS & SRP 2nd Quarter Stakeholder Meeting
2014:
Palo Verde Hub-North Gila 500kV #2 line
North Gila-TS8 230kV line
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 14 14

15. Project Timing Changes
Project Name
Previous in-service date
New in-service date
Bagdad 115kV line relocation
2011
2014
Scatter Wash 230/69kV substation
2012
Desert Basin-Pinal Central 230kV line
2013
Sundance-Pinal Central 230kV line
* It should be noted that in-service dates shown in this table are based on load projects, not potential interconnections. New generation interconnections may accelerate the in-service date.
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

16. 3.b. APS Planning – Transmission Projects for Renewable Generation
1) Palo Verde to Delany 500kV
2) Palo Verde to North Gila 500kV
3A) Palo Verde to Valley Load (Liberty)
3B) Gila Bend to Valley Load (Liberty)
4) Delany to Blythe 500kV
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

17. APS & SRP 2nd Quarter Stakeholder Meeting
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APS & SRP 2nd Quarter Stakeholder Meeting

18. APS & SRP 2nd Quarter Stakeholder Meeting
3.c. 2010/2011 Study Assumptions
Coordinated Base Cases (Seed Cases)
SATS 2012 case
WECC 2015HS
WestConnect case
69kV transmission models incorporated
Most up-to-date forecasts for peak summer loads
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

19. 3.c. 2009 NERC/WECC Reliability Studies
Summer Peak cases
TPL-001 & TPL-002
Thermal analysis (All 10 years)
Post-Transient (All 10 years)
Transient Stability (2013 & 2018)
TPL-003 & TPL-004 (2013 & 2018)
Maximum Load Serving Capability for Phx & Yuma (All 10 years)
TPL-001 & TPL-002 Thermal and Post Transient
Winter Load cases (2013 & 2019 WECC cases)
Thermal, Transient Stability, & Post Transient
TPL-001 thru TPL-004
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 19

20. APS & SRP 2nd Quarter Stakeholder Meeting
2009 NERC/WECC Studies
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 20 20 20

21. APS & SRP 2nd Quarter Stakeholder Meeting
2009 NERC/WECC Studies
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 21 21 21

22. 3.c. 2010 NERC/WECC Reliability Studies
Summer Peak cases
TPL-001 & TPL-002
Thermal analysis (All 10 years)
Post-Transient (All 10 years)
Transient Stability (2013 & 2019)
TPL-003 & TPL-004 (2013 & 2019)
Maximum Load Serving Capability for Phx & Yuma (All 10 years)
TPL-001 & TPL-002 Thermal and Post Transient
Winter Load cases (cases unknown at this time)
Thermal, Transient Stability, & Post Transient
TPL-001 thru TPL-004
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 22 22

23. 3.d. Interconnection & Study Requests
Generation Interconnection requests
APS OASIS contains Generation Interconnection Queue
30 Solar projects MW
7 Wind projects MW
1 Others (Coal, NG, Biomass, etc.) MW
4 Transmission Interconnection Requests
Currently no Transmission Service Requests under Study
Currently no Economic Study Requests
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

24. 3.e&f. Stakeholder Study Requests
Study requests can be taken at today’s meeting
Study requests can be made at any time to:
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

25. APS & SRP 2nd Quarter Stakeholder Meeting
3.g. Comments & Question
Comments??????
Questions!!!!!!!!!!
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 25

26. 4.a SRP Planning - Calendar & Methodology
WECC/TEPPC/SWAT Planning Calendar
SRP Planning Calendar
Assumptions and Methodology
Types of Studies Performed
Proposed 2010–2019 Ten Year Plan
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 26

27. APS & SRP 2nd Quarter Stakeholder Meeting
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APS & SRP 2nd Quarter Stakeholder Meeting 27 27

28. APS & SRP 2nd Quarter Stakeholder Meeting28
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APS & SRP 2nd Quarter Stakeholder Meeting

29. APS & SRP 2nd Quarter Stakeholder Meeting
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APS & SRP 2nd Quarter Stakeholder Meeting 29

30. 4.a 2010-2019 Study Assumptions/Methodology
Coordinated Base Cases (Seed Cases)
NERC Compliance Studies
2011 – APS/SRP 2011 coordinated case
2016 – APS/SRP 2016 coordinated case
BTA Studies
CATS-EHV 2018 coordinated case
69kV transmission models incorporated
Most up-to-date forecasts for peak summer loads
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 30

31. 4.a 2010-2019 Study Assumptions/Methodology
NERC Compliance Studies Cases
2011 & 2016 Summer Peak & Offpeak Cases
2011 & 2016 Simultaneous Import Limit (SIL) & Maximum Load Serving Capability (MLSC) Cases
Summer Peak & Offpeak cases
Thermal analysis
Post-Transient
Transient Stability
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 31

32. 4.a 2010-2019 Study Assumptions/Methodology
SIL & MLSC Cases (Phx)
Thermal and Post-Transient
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 32

33. APS & SRP 2nd Quarter Stakeholder Meeting
Planning Methodology
NERC STANDARD
Type of Studies Completed
TPL-001 (N-0)
Thermal
Transient Stability
Post-transient
2011
Peak X
Offpeak
2016
All-in
TPL-002 (N-1)
SIL
MLSC
TPL-003 (N-2)
Bus outages
Contingency of towers
Stuck breaker
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

34. APS & SRP 2nd Quarter Stakeholder Meeting
Planning Methodology
NERC STANDARD
Type of Studies Completed
TPL-003 (N-2)
Thermal
Transient Stability
Post-transient
2011
Common Corridor X
N-1-1
2016
Bus outages
Contingency of towers
Stuck breaker
TPL-004 (N-X)
Substations with generation
Common Corridor/Substation without generation
Note: TPL-003 studies were performed on Peak & Off-Peak cases
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

35. 4.b SRP Ten Year Plan Projects 2010-2019
Filed
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting 35

36. place holder for CATS only, SALT RIVER PROJECT 500kV SYSTEM
NAVAJO GS
MOENKOPI
YAVAPAI
CHOLLA (APS)
MARKETPLACE
DUGAS
(APS)
MEAD
MORGAN(APS)
2010
Sun Valley (APS)
2014
SUGARLOAF (APS)
McCULLOUGH
2010
2016
NEVADA
2014
WESTWING
PINNACLE PEAK (APS)
2010
DELANY
2012
CORONADO
PALO VERDE
RUDD
TBD
HASSAYAMPA
TBD
JOJOBA
RS20
TBD
KYRENE
TBD
TBD
2014
2011
BROWNING
SILVER KING
SANTA ROSA
2014
ABEL
2020
TBD
PINAL WEST
2014
2011
2020
(TBD,
place holder for CATS only,
no current SRP plans)
2014
PINAL CENTRAL
2014
NORTH GILA (APS)
SUNZIA (SPG)
SAGUARO
2014
Central
New Mexico
2013/2014
TORTOLITA
(TEP)
EXISTING 500kV SUBSTATION
EXISTING LINES
SALT RIVER PROJECT 500kV SYSTEM
June 24, 2010
FUTURE 500kV SUBSTATION
FUTURE LINES
APS & SRP 2nd Quarter Stakeholder Meeting

37. SALT RIVER PROJECT 500kV SYSTEM
2011:
Browning-Pinal Central 500kV (it will be energized as Randolph-Browning 230kV until 2014)
2014:
Delany-Sun Valley 500kV
Hassayampa-N.Gila 500kV line
Pinal West-Pinal Central 500kV
Pinal Central 500/230kV substation
2016:
Sun Valley-Morgan 500kV
2020:
Pinal Central-Abel #2 500kV
SALT RIVER PROJECT 500kV SYSTEM
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

38. SALT RIVER PROJECT EASTERN 230kV SYSTEM
PINNACLE PEAK
THUNDERSTONE
GOLDFIELD
SALT RIVER PROJECT EASTERN 230kV SYSTEM
BRANDOW
TBD
TBD
ROGERS
TBD
TBD
BROWNING
SANTAN
To CORBELL
TBD
RS17
TBD
2018
DINOSAUR
2017
RS21
To SCHRADER
TBD
TBD
TBD
RS24
TO SILVER
KING
2018
TBD
2018
2011
RS20
TO SILVER
KING
TBD
LOOP IN
TBD
2017
TBD
TBD
ABEL/RS22
RS23
2011
TBD
DOUBLE CIRCUIT, PHASE TIED LINE
2011
EXISTING 230kV CIRCUIT
RANDOLPH SWITCHYARD
FUTURE 230kV CIRCUIT
DESERT BASIN
2011
2014
EXISTING 230kV SUBSTATIONS
2014
2014
PINAL CENTRAL
2014
FUTURE 230kV SUBSTATIONS
GENERATING STATION
CATSHV03
TBD
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

39. SALT RIVER PROJECT EASTERN 230kV SYSTEM
2011:
Dinosaur-Abel-Randolph 230kV
2014:
Desert Basin-Pinal Central 230kV line
Pinal Central - Randolph 230kV line
RS26 230/69kV substation
2017:
Abel-Schrader 230kV
2018:
Abel-Santan 230kV
RS24 230/69kV substation
SALT RIVER PROJECT EASTERN 230kV SYSTEM
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

40. SALT RIVER PROJECT WESTERN 230kV SYSTEM
TO W.A.P.A. PINNACLE PEAK
TO APS PINNACLE PEAK
SRP PINNACLE PEAK
W.A.P.A.
WESTWING
TBD
RS26
DEER VALLEY (APS)
2014
PAPAGO
RS25
W.A.P.A.
TBD
W.A.P.A.
ALEXANDER
AGUA FRIA
BRANDOW
THUNDERSTONE
WHITE TANKS
To GOLDFIELD
TBD
TBD
ROGERS
RUDD
WARD
TBD
ORME
TO APS OCOTILLO
LIBERTY (W.A.P.A.)
SANTAN
CORBELL
To BROWNING
ANDERSON
KYRENE
DOUBLE CIRCUIT, PHASE TIED LINE
KNOX
SCHRADER
RS17
EXISTING 230kV CIRCUIT
TBD
FUTURE 230kV CIRCUIT
To RS24
EXISTING 230kV SUBSTATIONS
FUTURE 230kV SUBSTATIONS
June 24, 2010
GENERATING STATION
APS & SRP 2nd Quarter Stakeholder Meeting

41. SALT RIVER PROJECT EASTERN MINING AREA SYSTEM
ROOSEVELT
MORMON FLAT
HORSE MESA
STEWART MOUNTAIN
FRAZIER
TO SILVER KING 500kV
SILVER KING
230
TBD (230kV)
PINTO VALLEY
GOLDFIELD
TBD
MIAMI
MOONSHINE
230kV
115kV
PINAL
TO THUNDERSTONE
CARLOTTA
CARREL
SPURLOCK
ELLISON
TBD (230kV)
TRASK
OAK FLAT
RS20
TBD (230kV)
SEE DETAIL
230kV
TBD
SUPERIOR
KNOLL
RAY
DETAIL
SUPERIOR
230KV
115KV
MORRIS
KEARNY
TBD
HAYDEN
BONNEYBROOK
(APS)
NEW HAYDEN
TBD
ASARC0
COOLIDGE (W.A.P.A.)
TO APACHE (AEPCO)
FUTURE SUBSTATION
FUTURE LINE
SALT RIVER PROJECT EASTERN MINING AREA SYSTEM
EXISTING SUBSTATION
EXISTING LINE
June 24, 2010
GENERATING STATION
APS & SRP 2nd Quarter Stakeholder Meeting

42. Electric System Additions/Upgrades
Equipment
Year
Coronado #2 500/345kV transformer
Completed
Cholla-Saguaro 500kV Series Cholla replacement
2011
Kyrene 3rd 500/230kV transformer
Abel 1st 230/69kV transformer
Rudd 1st 230/69kV transformer
2013
Schrader 3rd 230/69kV transformer
Pinal Central 1st & 2nd 500/230kV transformers
2014
RS-24 1st 230/69kV transformer
2018
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

43. APS & SRP 2nd Quarter Stakeholder Meeting
Summary Status
Project I/S Status Study Forum
Pinal West – Browning 500kV 2011, 2014 Des/ ROW Yes CATS/CATS HV/WATS/SEV E&O/
Desert Basin – Pinal Central 230kV Des Yes CATS HV/WECC SRWG, TSS
RS24 230kV Transmission Project 2018 Siting Yes
RS26 Transmission Project 2014 Pre Siting Yes
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

44. SRP Changes from 2009 to 2010 500kV Projects 230kV Projects
2010 Morgan – Pinnacle Peak Formerly Raceway – Pinnacle Peak
2013/2014 SunZia Project
Delayed from 2013
2014 Pinal West – Pinal Central Delayed from 2013
2014 Tortolita – Pinal Central
230kV Projects
2014 Desert Basin – Pinal Central 230kV
2017/2018 RS24 230kV Transmission Project Delayed from 2013
June 24, 2010

45. 4.c. SRP Planning – Transmission Projects for Renewable Generation
Pinal West – Pinal Central 500kV line
Pinal Central – Tortolita 500kV line
Palo Verde – Delany 500kV line
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

46. APS & SRP 2nd Quarter Stakeholder Meeting
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

47. SRP Planning - Study Requests
Generation Interconnection Requests
Transmission Interconnection Requests
Transmission Service Requests
Economic Study Requests
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

48. 4.d. SRP Planning – Study Requests
Generation Interconnection Requests listed below are for SRP solely owned transmission:
4 Natural Gas projects MW
2 Wind projects MW
June 24, 2010
The joint interconnection requests are listed on SRP OASIS
APS & SRP 2nd Quarter Stakeholder Meeting

49. 4.d. SRP Planning - Study Requests
Currently there are no Transmission Interconnection Requests under study
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

50. 4.d. SRP Planning - Study Requests
Currently there are no Transmission Service Requests under study
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

51. 4.e. SRP Planning - Study Requests
Currently there are no Economic Study Requests
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

52. 4.f. Stakeholders Requests
SRP invites Stakeholders to submit request for additional transmission studies
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

53. 4.g. SRP Planning – Comments & Questions
Stakeholder comments/questions on 2010 Study Results or 2011 Study Requests
Requests can be made at any time to:
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

54. 5. Current Activities Updates
NERC Compliance Reliability Standard MOD-029 – Rated System Path Methodology
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

55. 6. Stakeholder Questions and Comments
Open discussion
Reference Material
WestConnect –
APS OASIS –
SRP OASIS –
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting

56. APS & SRP 2nd Quarter Stakeholder Meeting
7. Action Items
Review any action items identified for follow up
Information addressing action items to be posted on APS and/or SRP OASIS and WestConnect website
June 24, 2010
APS & SRP 2nd Quarter Stakeholder Meeting