Energy GatewayGateway West Project Gateway South Project
Technical Study Leads: Idaho Power (Gateway West) and PacifiCorp (Gateway South)
WECC Phase 2 Study Group Kick-Off MeetingMay 22, 2009Salt Lake City, Utah
2
Energy Gateway Project - Phase 2 Technical Studies
Standards of Conduct Non-Disclosure Statement
The following procedures have been implemented to provide Standards of Conduct Safeguards:
Ten day advance notice of public meeting All eligible customers invited Telephone participation provided Handouts posted on OASIS prior to meeting Meeting notes will be taken and posted One eligible customer must be in attendance Meetings no more than twice per month
3
Energy Gateway Project - Phase 2 Technical Studies
Our agenda for today…
1. Welcome2. Introductions3. EGW Phase 2 Study Process – PCC Presentation (April 2009)4. Facility Staging 5. Study Area Path Interactions, Study Participants & Issues6. Study Area: “Straw-man” Study Plan7. Study Schedule8. Q&A
4
Energy Gateway Project - Phase 2 Technical Studies
1. Welcome2. Introductions
WECC Phase 2 Study Group Kick-Off Meeting
5
Energy Gateway Project - Phase 2 Technical Studies
WECC Phase 2 Study Group Kick-Off Meeting
3. Energy Gateway Phase 2 Study Process - PCC Presentation (April 2009)
6
Energy Gateway Project - Phase 2 Technical Studies
Gateway West
MSTI
SWIP
7
Energy Gateway Project - Phase 2 Technical Studies
Gateway South
8
Energy Gateway Project - Phase 2 Technical Studies
Phase 1 Study Effort
Studies were performed and reported by path Five for Gateway West Three for Gateway South
Reviewing entities interested in local impacts
9
Energy Gateway Project - Phase 2 Technical Studies
Leverage Phase 1 Experience
Perform and review studies within a local area Attach appropriate local area studies for Phase 2
reports
10
Energy Gateway Project - Phase 2 Technical Studies
Phase 2 Method
Hold Energy Gateway review meetings Gateway West Project Review Study Group Gateway South Project Review Study Group
Form five sub-area study groups
11
Energy Gateway Project - Phase 2 Technical Studies
Gateway West Study Areas
Bridger Study Area
Windstar Study Area
Southern Idaho Study Area
MSTI
SWIP
12
Energy Gateway Project - Phase 2 Technical Studies
Gateway South Study Areas
Aeolus South Study Area
Mona South Study Area
13
Energy Gateway Project - Phase 2 Technical Studies
Process Flow Diagram
Gateway Energy Phase 2 Planning Study Coordination ProcessP
roje
ct R
evie
w
Gro
up
Com
bine
d P
roje
ct R
evie
w
Gro
up
Sub
-Are
a W
ork
Gro
upP
roje
ct S
pons
orW
EC
C T
SS
an
d P
CC
Project Data
WECC Base Case
Sub-AreaStudyPlan
Study Area Input
AcceptAreaStudyPlan?
No
Perform Area PlanningStudies
Yes
AcceptStudy Results
?No
Yes
Phase 2Report
Accept Report
?
No
Yes
Accept Report
?
No
Phase 3StatusYes
ProjectStudyPlan
Accept ProjectStudyPlan?
No Yes
Project Plan Input
Notice to Proceed
Phase 2 Report Appendix
Phase 2 Report Appendix
Perform Project PlanningStudies
14
Energy Gateway Project - Phase 2 Technical Studies
Example Phase 2 Report
Gateway WestPhase 2 Report
Appendix ASouthern Idaho Area
Study
Appendix BBridger Area Study
Appendix CWindstar Area Study
15
Energy Gateway Project - Phase 2 Technical Studies
Energy Gateway Project
4. Facility Staging
16
Energy Gateway Project - Phase 2 Technical Studies
EGW Facility Staging
Due to the scope and nature of the EGW project, not all facilities will be constructed during the same period.
As such, facilities will be installed following a segmented approach – focusing on one leg of the project, then another leg, etc.
For example: Populus – Terminal 345 kV #1
& #2 will be in-service 12/2010 (This project was granted Phase 3 status in 11/2008)
Pinto 345 kV series capacitor (on PNT-HNT 345 kV line) will be in-service 5/2010
St. George (Utah) SVC will be in-Service in 5/2011
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Energy Gateway Project - Phase 2 Technical Studies
EGW Facility Staging
Rather than initiate technical studies for each transmission segment, it was decided to group transmission segments into two logical project stages that would be evaluated by WECC Phase 2 study group (or sub groups).
Incremental transmission limitations for transmission segments that are added between stages, will be addressed via OTC studies. [This same process was followed by BPA and AVISTA for the West of Hatwai Expansion project.]
18
Energy Gateway Project - Phase 2 Technical Studies
EGW Facilities – Stage 1 (1500 MW)
WYOMING
CRESTON
POPULUS
2
LIMBER(future)
CEDAR HILL
ToCAPTAIN JACK
KINPORTMIDPOINT
BEN LOMOND
TERMINAL
MINERS
AEOLUSBRIDGER
BORAH
WIND RIVER
HAYDEN
BONANZA
4
RED BUTTE
MONA
UTAH
SALT LAKE CITY
COLORADO
NEVADAIDAHO
MONTANA
2
2
4
CAMP WILLIAMS
HUNTINGTON
SIGURD
PINTO
FOUR CORNERS
HARRY ALLEN CRYSTAL
NEW MEXICOARIZONA
CRAIG
FLAMING GORGE
YELLOW TAIL
WYODAK
500 kV345 kV230 kV
Legend
Revision: 4.2Updated on: 5/21/09
CHEYENNE
DENVER
2
OREGON
SUMMERLAKE
SALEM
McNARY
2
2
2
TERMINAL
OQUIRRH
CAMP WILLIAMS
90TH SOUTH
MID VALLEY
To MONA
2
ROCK SPRINGS
ATLANTIC CITY
WINDSTARGOSHEN
HEMINGWAY
BOISE
Gateway Energy Project Stage 1 - Transmission Plan
DAVE JOHNSTON
Planned Future Voltage
2
Line Loop-In
Line Constructed 500 kV, Energized
345 kV
Kinport-MP Line Looped-In to Borah. Borah – MP Portion Converted to 500 kV
To Ben Lomond
2
19
Energy Gateway Project - Phase 2 Technical Studies
Gateway West – Stage 1 Facilities
Hemingway - Bridger
23 0 kV to R oc k Sp rings
23 0 kV to A eo lu s/C re sto n
Br id ge r
G o she n
G ate wa y C entra l
K in po rt
Bo rah
C eda r H ills
M id po in t
H em in gw ay
500 k V to A e o lu s
5 0 0 k V to R ob iso n S um m it(N o rth e rn S W IP )
5 0 0 k V to G a rris on(M IS T I)50 0 kV to
B o ardm an
50 0 kV toC ap tain Ja c k
5 00 kV toS u m m er L ak e
230 kV to A tla n tic C ity
2 3 0 kV to Po in t o f R o cks
2 30 kV to M us tan g
Th ree M ileKn o ll
3 4 5 kV to B en L o m on d
34 5 kV to Term ina l
Po pu lu s
345 kV
345 kV
500 kV
500 kV
2- 1500 MVA
1 - 1500 M VA
2 - 1500 M VA
1 - 1500 M VA
230 kV
G atew a y W est(H em ingw a y - B ridge r)
2 - 750 MVA+20 P STO
5 0 0 kV3 4 5 kV2 3 0 kV
E x is tin gM P -SL
15 3 m iles3 - A th ab a ska /T W19 49 .6
12 6 m iles3 - A th ab a ska /T W19 49 .6
88 m iles3 - 1 2 7 2S kyla rk
2 - 1 2 7 2S ky la rk
34 m ile s3 - A thab as ka /T W194 9 .6
11 5 m ile s3 - A thab as ka /T W1949 .6
5 3 m ile s3 - A th ab a ska /T W1 9 49 .6
20 4 m iles3 - A th ab a ska /T W19 49.6
In-ServiceAction Gateway West Date
Add Bridger - Populus 500 kV #1 (w/series comp) 2014Add Populus 500/345 kV #1 TX 2014Add Populus - Borah 500 kV #1 2016Add Borah 500/345 kV #1 TX 2016Loop KP-MP 345 kV line into Borah to create the KP-BR 345
kV and BR-MP 500 kV2016
Upgrade Series comp on MP-HM 500 kV #1 2016Add Populus - Cedar Hill 500 kV #1 (w/series comp) 2016Add Cedar Hill - Hemingway 500 kV #1 (w/series comp) 2016
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Energy Gateway Project - Phase 2 Technical Studies
Gateway West – Stage 1 Facilities
W in ds ta r
C re s to n
23 0 kV to P u m pk in B u tte
2 30 kV to R ock S prin gs
2 30 kV to A t la ntic C ity
2 30 kV to P o in t o f Ro ck s
2 30 kV to M u sta n g
2 30 kV to C asp er
23 0 kV to Ye llow C ake
2 30 kV to D ave Joh n s to n
5 00 kV to Po p u lu s
3 45 kV to Th ree M ile K no ll
34 5 kV to P op u lu s B rid g er
50 0 kv to M o na
A e o lu s
34 5 kV
500 kV
3 - 1500 M VA
2- 1500 M VA
2- 1500 M VA
1- 1500 M VA
50 0 kV
500 kV
230 kV
23 0 kV230 kV
SVC
G ate w ay W est(B ridger - A eolus - W indsta r)
2 - 750 M VA+2 0 PSTO
4 8 m iles3 - A thaba s ka /TW1 949 .6
9 7 m ile s3 - A th ab a ska /T W1 9 49 .6
1 4 5 m ile s3 - A th ab a ska /T W1 9 49 .6
73 m ile s3 - A th aba ska /T W19 49 .6
73 m ile s2 -1 27 2 AC S R
88 m ile s2 -1 27 2 AC S R
5 00 kV3 45 kV2 30 kVG atew ay S ou th
Bridger - Windstar
The current schedule calls for all Gateway West – Stage 1 facilities will be in-service by 12/2016.
In-ServiceAction Gateway West Date
Add Windstar - Aeolus 230 kV #1 2014Add Windstar - Aeolus 230 kV #2 2014Add Aeolus 500/230 kV #1, #2 & #3 TX 2014Add Aeolus 230 kV SVC (-125/+450 MVA), MSC's at 230 kV
(1-100 MVAr) & 500 kV (4-200 MVAr) 2014
Add Aeolus - Bridger 500 kV #1 (w/series comp) 2014Add SPS - Windstar and/or Aeolus Generator Tripping 2014Add Bridger 500/345 kV #1 & #2 TX 2014Add Bridger 345 kV PST #1 & #2 2014
Modify SPS - Bridger Generator Tripping Scheme 2014
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Energy Gateway Project - Phase 2 Technical Studies
Gateway South – Stage 1 Facilities
The current schedule calls for all Gateway South – Stage 1 facilities will be in-service by 12/2017.
In-ServiceAction Gateway South Date
Add Series comp the PNT-HNT 345 kV line 2010Add SPS - West Cedar 138 kV line sectionalizing scheme 2010Add Red Butte 345 kV SVC (-100/+300 MVAR), MSC's: 4-
120 MVAr (steady-state), 2-110 MVAr (dynamics)2011
Add Harry Allen 345/230 kV #2 TX 2011Add Sigurd - Red Butte 345 kV #2 (w/series comp) 2014Add SPS - Huntington Generator Tripping 2014
Add Aeolus - Mona 500 kV #1 (w/series comp) 2017Add Mona 500/345 kV #1 & #2 TX 2017
23 0 kV toW in ds ta r
5 00 kV toW in ds ta r
23 0 kv to C res ton /B ridge r
50 0 kv to B r id g e r
34 5 kV to O qu irrh
A eo lu s
M o na
M idd le 1
M id d le 2
S ig u rd
R ed Bu tte
C ry sta l
345 kV
#1 #2
#2
345 kV
345 kV
500 kV
1500 M VA
1500 M VA
2 - 1500 M VA
3 - 1500 M VA
500 kV
500 kV
500 kV
230 kV
SVC
N ew 500 kV
500 kV
G ateway S outh S ing le-line
N PCBus
4 - 400 M VA+50 PST
13 3 m ile s3 - A thaba s ka /T W19 49 .6
7 5 m ile s3 - A th ab as ka /T W1 949 .6
1 60 m iles3 - A th ab as ka /T W1 949 .6
1 60 m iles2 C a rd ina l9 54 A C S R
9 5 m ile s3 - A th ab as ka /T W
50 0 kV34 5 kV23 0 kV
G atew ay C en tra l
G a tew ay W est
500 kV construc tion,E nerg ized at 345 kV
Aeolus – Mona – So. Nevada
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Energy Gateway Project - Phase 2 Technical Studies
EGW Facilities – Stage 2 (Full-Build, 3000 MW)
WYOMING
CRESTON
POPULUS
2
LIMBER(future)
CEDAR HILL
ToCAPTAIN JACK
KINPORTMIDPOINT
BEN LOMOND
TERMINAL
MINERSAEOLUSBRIDGER
BORAH
WIND RIVER
HAYDEN
BONANZA
4
RED BUTTE
MONA
UTAH
SALT LAKE CITY
COLORADO
NEVADAIDAHO
MONTANA
2
2
4
CAMP WILLIAMS
HUNTINGTON
SIGURD
PINTO
FOUR CORNERS
HARRY ALLEN CRYSTAL
NEW MEXICOARIZONA
CRAIG
FLAMING GORGE
YELLOW TAIL
WYODAK
500 kV345 kV230 kV
Legend
Revision: 3.2Updated on: 5/21/09
CHEYENNE
DENVER
2
OREGON
SUMMERLAKE
SALEM
McNARY
2
2
2TERMINAL
OQUIRRH
CAMP WILLIAMS
90TH SOUTH
MID VALLEY
To MONA
2
ROCK SPRINGS
ATLANTIC CITY
WINDSTARGOSHEN
HEMINGWAY
BOISE
Gateway Energy Project Stage 2 – (Ultimate) Transmission Plan
DAVE JOHNSTON
Planned Future Voltage
2
Line Loop-In
Kinport-MP Line Looped-In to Borah. Borah – MP Portion Converted to 500 kV
To Ben Lomond
2
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Energy Gateway Project - Phase 2 Technical Studies
Gateway West – Stage 2 Facilities
In-ServiceAction Gateway West Date
Add Bridger - Populus 500 kV #2 (w/series comp) 2017Add Populus 500/345 kV #2 TX 2017Add Series comp POP-BOR 500 kV #1 2017Add Series comp BR-MP 500 kV #1 2017Add Midpoint - Hemingway 500 kV #2 (w/series comp) 2017Add Cedar Hill - Midpoint 500 kV #1 2017
Hemingway - Bridger
23 0 kV to R o ck S p rin gs
2 30 kV to A eo lu s/C re ston
Brid ge r
G o sh e n
G a teway C en tra l
Kin p or t
Bo ra h
C ed a r H ills
M idp o in t
H em in gw ay
5 00 kV to A e o lu s
5 0 0 kV to R ob iso n S u m m it(N o rth e rn S W IP )
50 0 kV to G a rr is on(M IS T I)50 0 kV to
B o ard m an
50 0 kV toC a ptain Ja c k
5 0 0 kV toSu m m er L a ke
2 30 kV to A tla n tic C ity
2 3 0 kV to Po in t o f R o cks
23 0 kV to M usta ng
T h re e M ileK no ll
34 5 kV to B e n L o m o nd
3 45 kV to Term in a l
P op u lu s
345 kV
345 kV
500 kV
500 kV
2- 1500 MVA
1 - 1500 MVA
2 - 1500 MVA
1 - 1500 MVA
230 kV
G atew ay W est(H em ingwa y - Bridge r)
2 - 750 M VA+37 P STO
50 0 kV34 5 kV23 0 kV
E xis t in gM P -S L
15 2 m ile s3 - A th ab aska /T W19 4 9.6
1 2 6 m iles3 - A th ab a ska /T W1 9 49 .6
8 8 m iles3 - 1 2 7 2S kyla rk
2 - 12 7 2Sky la rk
34 m ile s3 - A th a ba ska /T W19 4 9.6
11 5 m ile s3 - A th a ba ska /T W19 4 9.6
4 7m ile s3 - A th ab a ska /T W1 94 9 .6
1 45 m ile s3 - A th ab aska /T W1 94 9.6
24
Energy Gateway Project - Phase 2 Technical Studies
Gateway West – Stage 2 Facilities
Bridger - Windstar
The current schedule calls for all Gateway West – Stage 2 facilities will be in-service by 12/2017.
In-ServiceAction Gateway West Date
Add Windstar 500/230 kV #1 & #2 TX 2017Add Windstar - Aeolus 500 kV #1 2017Add Aeolus - Creston - Bridger 230 kV (or 500 kV) 2017
Modify SPS - Windstar and/or Aeolus Generator Tripping 2017
Add Bridger 345/230 kV #4 & #5 TX (500/230 kV Optional) 2017Modify SPS - Bridger Generator Tripping Scheme 2017
W inds ta r
C res ton
23 0 kV to Pu m pk in B u tte
230 kV to R ock Sp r in gs
230 kV to A tlan tic C ity
230 kV to Po in t o f R ocks
230 kV to M ustan g
2 30 kV to C aspe r
230 kV to Ye llow C ake
230 kV to D ave John s to n
500 kV to Popu lus
3 45 kV to T h ree M ile K no ll
3 45 kV to Pop u lu s B r idge r
500 kv to M ona
Aeo lu s
34 5 kV
500 kV
3 - 1500 M VA
2- 1500 M VA
2- 1500 M VA
1- 1500 M VA
50 0 kV
500 kV
230 kV
23 0 kV230 kV
SVC
G ate w ay W est(B ridger - A eolus - W indsta r)
2 - 750 M VA+3 7 PSTO
4 8 m iles3 - A thaba ska /TW1 949 .6
97 m ile s3 - A thaba ska /T W19 49 .6
145 m iles3 - A thab a ska /T W1949 .6
73 m iles3 - A th aba ska /T W1949 .6
73 m iles2 -127 2 AC S R
83 m iles2 -127 2 AC S R
5 00 kV3 45 kV2 30 kVG atew ay S ou th
25
Energy Gateway Project - Phase 2 Technical Studies
Gateway South – Stage 2 Facilities
The current schedule calls for all Gateway South – Stage 2 facilities will be in-service by 12/2019.
Aeolus – Mona – So. Nevada
In-ServiceAction Gateway South Date
Add Aeolus - Mona 500 kV #2 (w/series comp) 2019Add Mona - Sigurd 500 kV #1 2019Add Sigurd 500/345 kV #1 TX 2019Add Sigurd - Red Butte 500 kV #1 (w/series comp) 2019Add Red Butte 500/345 kV #1 TX 2019Add Red Butte - Crystal N 500 kV #1 (w/series comp) 2019Add Crystal 500 kV #1 thru #4 PST 2019Add Series comp the RB-HA 345 kV #1 line 2019Add SPS - H. Allen 345 kV Series Comp 50% Tripping 2019
23 0 kV toW inds ta r
500 kV toW inds ta r
230 kv to C res to n /B ridge r
50 0 kv to B r idg e r
500 kv to L im b er
Ae o lus
M on a
M id d le 1
M id dle 2
S igu rd
R ed B utte
C ry sta l
345 kV
#1 #2
#2
345 kV
345 kV
500 kV
1500 M VA
1500 M VA
2 - 1500 M VA
3 - 1500 M VA
500 kV
500 kV
500 kV
230 kV
SVC
N ew 500 kV
500 kV
G atew ay S outh S ing le-line
N PCBus
4 - 450 M VA+50 PS T
133 m iles3 - A thabas ka /T W1949 .6
75 m ile s3 - A thabas ka /T W19 49 .6
16 0 m iles3 - A thabas ka /T W19 49 .6
16 0 m iles2 C ard ina l95 4 AC S R
95 m ile s3 - A thabas ka /T W
500 kV345 kV230 kV
G a tew ay C en tra l
G a tew ay W est
26
Energy Gateway Project - Phase 2 Technical Studies
WECC Phase 2 Study Group Kick-Off Meeting
5. Study Area Path Interactions, Study Participants & Study Issues
27
Energy Gateway Project - Phase 2 Technical Studies
Study Area Participation Charts for each Study Areas, which indicate Area
Path Interactions, (projected) Study Participants & a drawing of the facilities being evaluated, have been displayed in the meeting room.
Please take time during one of the breaks to review the information and make necessary changes or modifications.
These inputs will help us in move the Phase 2 study efforts forward.
28
Energy Gateway Project - Phase 2 Technical Studies
Gateway West - So. Idaho Study Area
Paths Analysis
Midpoint West
Borah West (Path 17)
Simultaneous Interactions
Idaho – Northwest (Path 14) Midpoint – Summer Lake (Path
75) Boardman - Hemingway
Montana – Northwest (Path 8)
Path C (Path 20) Montana – Idaho (Path 18) MSTI Project SWIP (Great Basin – North, ENTP) Idaho – Sierra (Path 16)
29
Energy Gateway Project - Phase 2 Technical Studies
Gateway West – Bridger Study Area
Path Analysis
Bridger West (Path 19)
Path C (Path 20)
Aeolus West
Simultaneous Interactions
Aeolus South Path C (Path 20) Montana – Idaho (Path 18) Bonanza West (Path 33) Monument – Naughton (PAC Internal) RS/FH West (PAC Internal)
Bridger West (Path 19) Bonanza West (Path 33) Monument – Naughton (PAC Internal) RS/FH West (PAC Internal)
Aeolus South TOT 1A (Path 30) Bonanza West (33)
30
Energy Gateway Project - Phase 2 Technical Studies
Gateway West – Windstar Study Area
Path Analysis TOT 4A (Path 37)
Simultaneous Interactions Montana Southeast (Path 80) TOT 4B (Path 38) TOT 3 (Path 36) Yellowtail South TOT 1A (Path 30)
31
Energy Gateway Project - Phase 2 Technical Studies
Gateway West – Study Participants
Study Participants• Basin Electric Power Cooperative• Black Hills Cooperation• Bonneville Power Administration,
Transmission/Power Services• Columbia Grid• Deseret Generation & Transmission• Edison Mission Energy• Great Basin Transmission Group• Idaho Power Company• NorthWestern Energy• NV Energy• PacifiCorp• Puget Sound Energy, Inc.• TransCanada• TransWest Express LLC• Western Area Power Administration• Western Grid Group
Correspondents• OPUC• Avista Corp.• NWPP Corporation• Wyoming Public Service
Commission• EnTranTek LLC and Ridgeline
Energy LLC• Invernergy LLC• Wyoming Public Service
Commission
32
Energy Gateway Project - Phase 2 Technical Studies
Gateway West – Study Issues
Other Issues GW interaction with Bridger West
(PAC) Interactions between Bridger West
and Path C (PAC)
Wyoming Issues Evaluate interaction between
GW and TOT 3 (Wyoming – Colorado); additionally GW and DJ-LRS-Ault transmission lines. (Basin Electric)
Evaluate the interaction between TOT 1A path and each component of the project. (WAPA)
When are SSR Studies planned for? (WAPA)Parallel to Phase 2 process, PACE will perform SSR analysis for portions of the Western Interconnection that are effected by the EGW Project.
33
Energy Gateway Project - Phase 2 Technical Studies
Gateway South – Aeolus South Study Area
Path Analysis Aeolus South
Simultaneous Interactions Aeolus West Bridger West (Path 19) TOT 1A (Path 30) Bonanza West (Path 30) IPP DC Line, 2400 MW (Path 27) Intermountain – Mona (Path 28) Intermountain – Gonder (Path 29) Pavant – Gonder (Path 32) TOT 2C (Path 35) COI (Path 66) PDCI (Path 65)
34
Energy Gateway Project - Phase 2 Technical Studies
Gateway South – Mona South Study Area
Path Analysis Mona South
TOT 2C
Simultaneous Interactions IPP DC Line, 2400 MW (Path 27) Intermountain – Mona (Path 28) Intermountain – Gonder (Path 29) Pavant – Gonder (Path 32) TOT 2C (Path 35) COI (Path 66) PDCI (Path 65)
TOT 2A (Path 31) TOT 2B1/2B2 (Paths 78 & 79) IPP DC Line, 2400 MW (Path 27) Intermountain – Mona (Path 28) Intermountain – Gonder (Path 29) Pavant – Gonder (Path 32) Centennial Project (Path 81) SWIP COI (Path 66) PDCI (Path 65)
35
Energy Gateway Project - Phase 2 Technical Studies
Gateway South – Study Participants
• Arizona Public Service• Basin Electric Power Cooperative• Black Hills Corporation• Columbia Grid• Deseret Generation & Transmission• Idaho Power Company• Los Angeles Department of Water &
Power• LS Power• NorthWestern Energy• NV Energy• PacifiCorp• Puget Sound Energy• Southern California Edison
• Salt River Project• TransWest Express LLC• Tri-State Generation &
Transmission• Utah Association of Municipal
Power Systems• Western Area Power Administration• Wasatch Wind
36
Energy Gateway Project - Phase 2 Technical Studies
Gateway South – LADWP Study Issues
Simultaneous Interaction between each of the paths noted below and each component of the GS project, and the project as a whole at the projects max loading:
Path 27 (IPPDC 2400 MW) Path 28 (Intermountain –
Mona) Path 29 (Intermountain –
Gonder)
Interactions between existing & proposed PST’s at Crystal
TOT 2C path (+/- 600 MW and +2100/-1700 MW) interaction with other paths.
Staging of TOT 2C facilities Each of the SPS schemes in the
report will be further refined and added to the Project POS.
Continue to evaluate simultaneous interactions among components within the GS Project.
Short circuit analysis to quantify impacts on existing breakers in the southern Nevada/Eldorado Valley
37
Energy Gateway Project - Phase 2 Technical Studies
Gateway South – Other Study Issues
Evaluate interaction between GS and TOT 3 (Wyoming – Colorado); additionally GS and DJ-LRS-Ault transmission lines. (Basin Electric)
(UPALCO-Carbon 138 kV line): TOT 1A should be monitored and interactions determined in the next phase of studies. (WAPA)
When are SSR Studies planned for? (WAPA)Parallel to Phase 2 process, PACE will perform SSR analysis for portions of the Western Interconnection that are effected by the EGW Project.
How will PacifiCorp determined if the Harry Allen – Mead 500 kV #2 line should be included in the GS plan-of-service. (TWE) Detailed analysis of the impacts of a new transmission line between Crystal and Mead and the Centennial Project will be evaluated during the Phase 2 studies.
Is there a dependent relationship between the PacifiCorp and other project in WECC Phase 2? (TWE)Phase 1 studies demonstrated that Gateway South can achieve its ratings with or without the Great Basin North 500 kV line being constructed. Additional simultaneous analysis for other Western Interconnection paths will be performed during Phase 2 technical studies.
38
Energy Gateway Project - Phase 2 Technical Studies
WECC Phase 2 Study Group Kick-Off Meeting
6. Study Area: “Straw-man” Study Plan
39
Energy Gateway Project - Phase 2 Technical Studies
Study Area – “Straw-man” Study Plan
Study Plan Format: Detail for Phase 1 Analysis
2015 HS base case Resource Assumptions (PAC IRP & OASIS Inputs)
Project Configuration (Full-Build Option) Study Criteria List of Outages, etc. Place Holder for Phase 2 Studies
Project Staging (1500 MW/3000 MW) Study Base Cases → See Next Slide Resource Assumptions
Stage 1 – Updated IRP, Stage 2 – Extended IRP *Being Refined* Path Simultaneous Interactions Issues raised by Phase 2 Study participants
Once approved, Study Plan will need to be tailored for each sub-Area
40
Energy Gateway Project - Phase 2 Technical Studies
Energy Gateway Base Cases
Study Period Base Case Release Date2019 HS 19HS1P.ZIP 3/17/2009
☼ 2018 HS 18HS1A1P.ZIP 6/13/20082017 HW 17HW1A1P.ZIP 7/10/20072016 HW 16HW1SA1P.ZIP 10/10/20082015 HS 15HS1SA1P.ZIP 4/6/20072014 HW 14HW1A1P.ZIP 1/16/20092014 HS 14HS2SA1P.ZIP 7/23/2008
☼ 2013 LW 13LW1SA1P.ZIP 1/7/20092013 HW 13HW1A1P.ZIP 3/3/2008
● 2013 HS 13HS1A1P.ZIP 10/10/2008
2012 HS 12HS2A1P.ZIP 11/15/20072011 LSP 11LSP1SA1P.ZIP 10/29/20072011 HS 11HS1B1P.ZIP 1/11/20072010 LW 10LW1P.ZIP 4/14/20092010 LA 10LA1SA1P.ZIP 12/21/20062010 HW 10HW2P.ZIP 3/24/20092010 HSP 10HSP1P.ZIP 4/28/20092010 HS 10HS2SA1P.ZIP 10/5/2007
● 2009 LW 09LW1A1P.ZIP 6/27/20082009 LS 09LS1A1P.ZIP 1/30/20092009 HW 09HW2A1P.ZIP 6/17/20082009 HSP 09HSP1A1P.ZIP 7/10/20082009 HS 09HS3A1P.ZIP 2/4/2009
TOT 4B Study Base Case (Pre-Gateway)
EGW Off-Peak Base Case
EGW Heavy Summer Base Case
Comments
TOT 2C/Southern Utah Study Base Case. Will be used to evaluate 2013, 2017, 2011 periods
41
Energy Gateway Project - Phase 2 Technical Studies
WECC Phase 2 Study Group Kick-Off Meeting
7. Study Schedule
42
Energy Gateway Project - Phase 2 Technical Studies
Study Schedule
IPC: West of PopulusID Task Name Start End
20092007 2010 2012 2013
Q4 Q2Q1Q2 Q3Q1Q4 Q3Q3Q1 Q3Q3Q1Q3 Q1Q4 Q4Q2 Q4
2/1/20107/2/2007NEPA Process
3 6/1/20101/1/2009
WECC Phase 2 Rating Process
2/1/20107/2/2007
BLM Right of Way Grants
1/23/20121/1/2008
Right of Way Acquisition
12/31/2010
1/1/2008Permitting
12/30/2011
1/1/2008Engineering
12/31/2015
2/2/2010Construction
2008 2011
Q1Q2Q2 Q4
10
9
8
7
6
2 12/31/2008
2/1/2008
WECC Phase 1 Rating Process
1 5/30/20087/5/2007
WECC Regional Planning Process
5
Q2 Q3 Q4
4 12/31/2015
6/2/2010
WECC Phase 3 Rating
2014 2015
Q1 Q2 Q3 Q4 Q1 Q2
2016
Q3 Q4 Q1 Q2
43
Energy Gateway Project - Phase 2 Technical Studies
Study Schedule
PacifiCorp
44
Energy Gateway Project - Phase 2 Technical Studies
WECC Phase 2 Study Group Kick-Off Meeting
8. Q&A