Confidential per Protective Order in Docket UE-191024 Exh. MGW-4CT
Dockets UE-191024 et. al. Witness: Michael G. Wilding
BEFORE THE WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION
WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION,
Complainant,
v. PACIFICORP dba PACIFIC POWER & LIGHT COMPANY
Respondent.
Dockets UE-191024, UE-190750, UE-190929, UE-190981, UE-180778 (Consolidated)
PACIFICORP
REDACTED SUPPLEMENTAL TESTIMONY OF MICHAEL G. WILDING
April 2020
Supplemental Testimony of Michael G. Wilding Exhibit No. MGW-4CT Page i
ATTACHED EXHIBITS
Exhibit No. MGW-5—Washington-Allocated Net Power Costs
Exhibit No. MGW-6—Net Power Costs Update
Supplemental Testimony of Michael G. Wilding Exhibit No. MGW-4CT Page 1
Q. Are you the same Michael G. Wilding who previously submitted direct testimony 1
in this proceeding on behalf of PacifiCorp dba Pacific Power & Light Company 2
(PacifiCorp or the Company)? 3
A. Yes. 4
PURPOSE AND SUMMARY OF TESTIMONY 5
Q. What is the purpose of your supplemental testimony? 6
A. My testimony presents the Company’s update to net power costs (NPC) 7
(April update), as requested in PacifiCorp’s Motion to Allow Supplemental 8
Testimony. In the April update, I explain the reasonableness of the Company’s 9
revised NPC allocated to Washington customers based upon the Washington Inter-10
Jurisdictional Allocation Methodology (WIJAM).1 I provide corrections and contract, 11
fuel, and forward prices curve updates to the Company’s December 13, 2019 filing 12
(initial filing), which was based on the September 30, 2019 Official Forward Price 13
Curve (OFPC). 14
Q. In the initial filing, the Company forecast NPC of $106.5 million for the rate 15
effective period ending December 31, 2021. How has your NPC recommendation 16
changed? 17
A. The Washington-allocated NPC in the April update is $112.2 million before applying 18
the production factor, $5.7 million higher than the NPC in the initial filing. A report 19
detailing the Washington-allocated NPC forecast is attached to my testimony as 20
Exhibit MGW-5. A list of all corrections and updates made, along with the 21
1 Unless otherwise specified, references to NPC throughout my testimony are expressed on a Washington-allocated basis.
Supplemental Testimony of Michael G. Wilding Exhibit No. MGW-4CT Page 2
approximate impact of each on NPC, is provided in Exhibit MGW-6. 1
SUPPLEMENTAL UPDATE 2
Q. Please summarize the major changes in NPC resulting from the April update. 3
A. Figure 1 illustrates the change in the forecast NPC by category compared to the NPC 4
originally filed in this case. 5
Figure 1
The changes in the components of Washington-allocated NPC from the initial 6
filing are largely driven by an increase in the forward market prices for electricity and 7
natural gas. Lower wholesales revenue, higher purchase power expense, and higher 8
natural gas fuel expense resulted in higher Washington-allocated NPC. This increase 9
is partially offset by lower coal fuel expense and wheeling expenses. 10
Q. Please explain the changes included in the Company’s April update. 11
A. The April update includes the following changes (the NPC impacts are based on the 12
initial filing): 13
• Klamath River Hydroelectric Facilities—The Company expects to continue to 14
Washington Allocated($ millions)
2021 Rate Case (WA) $106.5
Increase/(Decrease) to NPC:Wholesale Sales Revenue $0.8Purchased Power Expense $5.4Coal Fuel Expense ($1.0)Natural Gas Fuel Expense $0.9Wheeling and Other Expense ($0.4)
Total Increase/(Decrease) to NPC $5.7
2021 Rate Case April Update (WA) $112.2
Net Power Cost Reconciliation
Supplemental Testimony of Michael G. Wilding Exhibit No. MGW-4CT Page 3
operate Klamath River Hydroelectric Facilities during the 2021 NPC forecast period 1
(rate effective period). This update decreases Washington-allocated NPC by 2
approximately $1.6 million. 3
• Cholla Unit 4 Retirement—On January 7, 2020, the Company announced plans to 4
close the Cholla Unit 4 coal-fired power plant in northern Arizona by the end of 2020. 5
Cholla Unit 4 coal-fired power plant is removed from the Company’s resource 6
portfolio in the total-company NPC study.2 This update increased NPC by 7
approximately $0.8 million on a Washington-allocated basis. 8
• Energy Imbalance Market (EIM) Inter-Regional Transfer Benefits and 9
Greenhouse Gas (GHG) Benefits—PacifiCorp’s estimated EIM benefits for 2021 10
have been updated to include the most recent information through December 2019. 11
On a total-company basis, the expected inter-regional transfer benefits are 12
million, an increase of million; the GHG benefits are forecasted at 13
million, an increase of million. This update reduced the Washington-14
allocated NPC by approximately $1.1 million. 15
• Coal Costs—The Company has updated coal fuel costs to reflect changes in prices 16
and volumes since the initial filing. Mr. Dana M. Ralston provides additional detail 17
on the update in his supplemental testimony. The update decreased NPC by 18
approximately $1.0 million on a Washington-allocated basis. 19
• Wheeling Expense—The Company inadvertently included a wheeling expense item 20
in the rate effective period, which was supposed to be a one-time charge in 2019. 21
2 While Cholla Unit 4 is not included in Washington rates, the removal of any resource impacts total-system dispatch and net power costs.
REDACTED
Supplemental Testimony of Michael G. Wilding Exhibit No. MGW-4CT Page 4
Removing this wheeling expense item reduced Washington-allocated NPC by $0.4 1
million. 2
• Official Forward Price Curve (OFPC) and Short-Term Firm Transactions—The 3
Company updated NPC from the September 30, 2019 OFPC, to the December 31, 4
2019 OFPC. On average, market prices for electricity at the Mid-Columbia (Mid-C) 5
and Four Corners (4C) markets increased by approximately eight percent. Similarly, 6
market prices for natural gas increased, on average, by approximately eleven percent. 7
Short-term sales and purchase transactions for electricity and natural gas were also 8
updated through March 1, 2020. These updates increased the Washington-allocated 9
NPC by approximately $2.4 million. 10
Figure 2 shows the change in wholesale electricity prices (average market 11
price at the Mid-C and 4C trading hubs) by month and by heavy load hours (HLH) 12
and light load hours (LLH). Figure 3 shows the change in natural gas prices on 13
average at the Sumas and Stanfield trading hubs by month, which is a source of gas 14
for the Company’s gas plants. 15
Supplemental Testimony of Michael G. Wilding Exhibit No. MGW-4CT Page 5
Figure 2
Figure 3
Supplemental Testimony of Michael G. Wilding Exhibit No. MGW-4CT Page 6
• Long-Term Contract, Owned Wind Resources Status, and Pipeline Expense 1
Changes—The Company has included six long-term contract updates, two owned-2
wind resource status updates and one gas pipeline expense update. These updates 3
resulted in a $0.2 million increase to the Washington-allocated NPC. 4
Long-Term Contract Status Changes: 5
o Monsanto/Bayer and US Magnesium Buy-through—The Company 6
inadvertently used the actual buy-through amount from the period of July 7
2018 to June 2019 for the rate effective period. The correction was made 8
to use the historical average from the period July 2015 to June 2019 (US 9
Magnesium) and July 2014 to June 2019 (Monsanto) respectively for both 10
contracts. 11
o Millican Solar and Prineville Solar Capacity—Millican Solar project 12
capacity changed from 45 megawatts (MW) to 60 MW. Prineville Solar 13
project capacity changed from 55 MW to 40 MW. 14
o Cove Mountain Solar II—The Cove Mountain Solar II contract expense 15
was corrected and the delivered energy schedule was updated to the 16
calendar year 2021 forecast. 17
o Sigurd Solar Commercial Operational Date (COD)—The COD of 18
Sigurd Solar, an 80-MW solar plant in Sevier County, Utah has been 19
postponed to June 30, 2021, due to the recent disruption of the global 20
supply chain. 21
Supplemental Testimony of Michael G. Wilding Exhibit No. MGW-4CT Page 7
Owned-Wind Resources Status Changes: 1
The capacity factors for Foote Creek I and TB Flats II were corrected from the 2
initial filing. The generation from Foote Creek I and TB Flats II in the rate 3
effective period increased by 4,887 megawatt-hours (MWh) on a Washington-4
allocated basis, which is 6.5 percent higher than the initial filing. 5
Gas Pipeline Expense Changes: 6
Transportation costs to supply natural gas to the Naughton 3 plant are updated 7
to reflect a new gas supply and transportation agreements for the plant. 8
• Transmission Links—The Company updated transmission links from the initial 9
filing. This reduced NPC by approximately $2.3 million on a Washington-allocated 10
basis. 11
• Grant Meaningful Priority Hydro—The Grant Meaningful Priority hydro contract 12
was inadvertently included in the rate effective period in the initial filing. Removal of 13
this contract increased the Washington-allocated NPC by approximately $2.8 million. 14
• Colstrip 4 Outage—As a result of the Commission order in the Colstrip Outage 15
Investigation,3 the Company has removed certain Colstrip Unit 4 forced outages from 16
the 48-month history of actual outage events. The forced outages removed are related 17
to non-compliance with Mercury and Air Toxics Standards emissions limits during 18
summer 2018. The historical outage events are used to calculate the forecasted 19
outage rate in the rate effective period. The forecasted forced outage rate for Colstrip 20
3 In the Matter of the Investigation of Avista Corporation, d/b/a Avista Utilities, Puget Sound Energy, and Pacific Power & Light Company, Regarding Prudency of Outage and Replacement Power Costs, Docket No. UE-190882, Final Order 05 (Mar. 20, 2020).
Supplemental Testimony of Michael G. Wilding Exhibit No. MGW-4CT Page 8
Unit 4 was reduced from 10.19 percent to 7.56 percent and the forecasted NPC is 1
lowered by approximately $43,000 on a Washington-allocated basis. 2
Q. Does this conclude your supplemental testimony? 3
A. Yes. 4
Exh. MGW-5 Dockets UE-191024 et. al.
Witness: Michael G. Wilding
BEFORE THE WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION
WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION,
Complainant,
v. PACIFICORP dba PACIFIC POWER & LIGHT COMPANY
Respondent.
Dockets UE-191024, UE-190750, UE-190929, UE-190981, UE-180778 (Consolidated)
PACIFICORP
EXHIBIT OF MICHAEL G. WILDING
Washington-Allocated Net Power Costs
April 2020
WA
GR
C21
Apr
il U
pdat
eTo
tal
Jan-
21Fe
b-21
Mar
-21
Apr
-21
May
-21
Jun-
21Ju
l-21
Aug
-21
Sep-
21O
ct-2
1N
ov-2
1D
ec-2
1
$
Spe
cial
Sal
es F
or R
esal
eLo
ng T
erm
Firm
Sal
esB
lack
Hill
s-
-
-
-
-
-
-
-
-
-
-
-
-
B
PA
Win
d-
-
-
-
-
-
-
-
-
-
-
-
-
E
ast A
rea
Sal
es (
WC
A S
ale)
-
-
-
-
-
-
-
-
-
-
-
-
-
Hur
rican
e S
ale
-
-
-
-
-
-
-
-
-
-
-
-
-
LAD
WP
(IP
P L
ayof
f)-
-
-
-
-
-
-
-
-
-
-
-
-
Le
anin
g Ju
nipe
r R
even
ue8,
598
532
57
0
805
39
3
444
46
4
1,
310
1,
255
993
68
0
524
62
8
SM
UD
-
-
-
-
-
-
-
-
-
-
-
-
-
UM
PA
II s
4563
1-
-
-
-
-
-
-
-
-
-
-
-
-
Tot
al L
ong
Ter
m F
irm S
ales
8,59
8
53
2
570
80
5
393
44
4
464
1,31
0
1,25
5
99
3
680
52
4
628
Sho
rt T
erm
Firm
Sal
esC
OB
-
-
-
-
-
-
-
-
-
-
-
-
-
Col
orad
o-
-
-
-
-
-
-
-
-
-
-
-
-
F
our
Cor
ners
88,0
97
28,9
79
27
,820
31
,298
-
-
-
-
-
-
-
-
-
Idah
o-
-
-
-
-
-
-
-
-
-
-
-
-
M
ead
-
-
-
-
-
-
-
-
-
-
-
-
-
Mid
Col
umbi
a-
-
-
-
-
-
-
-
-
-
-
-
-
M
ona
-
-
-
-
-
-
-
-
-
-
-
-
-
NO
B-
-
-
-
-
-
-
-
-
-
-
-
-
P
alo
Ver
de38
0,40
8
12
8,58
2
119,
088
132,
738
-
-
-
-
-
-
-
-
-
S
P15
-
-
-
-
-
-
-
-
-
-
-
-
-
Uta
h-
-
-
-
-
-
-
-
-
-
-
-
-
W
ashi
ngto
n-
-
-
-
-
-
-
-
-
-
-
-
-
W
est M
ain
-
-
-
-
-
-
-
-
-
-
-
-
-
Wyo
min
g-
-
-
-
-
-
-
-
-
-
-
-
-
E
lect
ric S
wap
s S
ales
-
-
-
-
-
-
-
-
-
-
-
-
-
ST
F T
radi
ng M
argi
n-
-
-
-
-
-
-
-
-
-
-
-
-
S
TF
Inde
x T
rade
s-
-
-
-
-
-
-
-
-
-
-
-
-
Tot
al S
hort
Ter
m F
irm S
ales
468,
505
157,
562
14
6,90
8
16
4,03
5
-
-
-
-
-
-
-
-
-
Sys
tem
Bal
anci
ng S
ales
CO
B40
8,91
4
52
,540
26,9
84
27,9
36
13,9
66
8,87
8
(3
2,45
3)
(4
8,36
4)
(4
3,34
4)
31,2
07
250,
105
61,1
17
60,3
42
F
our
Cor
ners
366,
204
(39,
945)
(1
4,91
8)
(45,
008)
(7
,416
)
21,1
72
71
,729
374,
163
25
,911
10,5
16
(22,
977)
(1
9,26
8)
12,2
46
M
ead
394,
779
36,5
42
85
,145
32
,111
14
,356
19
,012
4,76
8
(17,
950)
(6,9
38)
(44,
716)
20
6,81
8
37
,560
28
,071
Mid
Col
umbi
a(7
78,7
54)
(17,
393)
(8
,650
)
334
(4
4,30
3)
(134
,397
)
(208
,570
)
(150
,929
)
(126
,200
)
(59,
381)
(1
7,59
1)
(3,2
41)
(8
,433
)
M
ona
99,2
43
(33,
329)
(1
2,43
2)
(8,0
46)
70
9
8,85
3
38
,732
131,
713
70
5
54,5
19
(23,
573)
(2
4,28
8)
(34,
320)
N
OB
42,6
93
-
56
8
822
3,
531
-
-
10,3
99
14
,774
10,9
35
-
-
1,66
4
P
alo
Ver
de1,
134,
907
1,
585
(76,
697)
(8
,149
)
19,1
58
76,4
82
12
5,79
4
559,
390
60
8,66
0
(3,0
81)
(5
6,78
6)
(51,
881)
(5
9,57
1)
Tra
pped
Ene
rgy
73,1
25
52,8
39
3,
496
116
42
3
-
21
8
-
-
-
3,
118
4,85
9
8,
056
Tot
al S
yste
m B
alan
cing
Sal
es1,
741,
110
52
,839
3,49
6
11
6
423
0
21
8
85
8,42
2
473,
568
(0
)
33
9,11
4
4,
859
8,05
6
Tot
al S
peci
al S
ales
For
Res
ale
2,21
8,21
4
210,
933
15
0,97
4
16
4,95
6
81
6
444
68
2
85
9,73
2
474,
823
99
3
339,
795
5,38
3
8,
684
Pur
chas
ed P
ower
& N
et In
terc
hang
eLo
ng T
erm
Firm
Pur
chas
esA
PS
Sup
plem
enta
l-
-
-
-
-
-
-
-
-
-
-
-
-
A
void
ed C
ost R
esou
rce
-
-
-
-
-
-
-
-
-
-
-
-
-
Ced
ar S
prin
gs W
ind
915,
717
105,
360
85
,547
80
,630
79,3
64
64
,897
58
,105
58
,019
45
,772
64
,637
85,1
83
83
,449
104,
754
Ced
ar S
prin
gs W
ind
II69
5,82
0
80
,087
64,9
94
61,2
57
60
,310
49,3
09
44,1
60
44,0
83
34,7
75
49,1
19
64
,728
63,4
12
79
,586
C
ombi
ne H
ills
Win
d41
9,39
2
29
,114
35,2
77
42,8
10
42,7
55
36,4
92
31
,272
35,1
24
29
,718
27,8
38
29,1
75
35,5
30
44,2
86
C
ove
Mou
ntai
n S
olar
301,
814
14,4
75
15
,208
26
,509
28
,859
33
,216
35,7
23
34
,652
32,7
88
28
,117
22
,634
16
,263
13
,369
Cov
e M
ount
ain
Sol
ar II
26,8
37
2,22
9
2,
240
2,24
3
2,
242
2,22
9
2,
242
2,
236
2,
236
2,23
5
2,
236
2,23
5
2,
236
Des
eret
Pur
chas
e-
-
-
-
-
-
-
-
-
-
-
-
-
D
ougl
as P
UD
Set
tlem
ent
-
-
-
-
-
-
-
-
-
-
-
-
-
Eag
le M
ount
ain
- U
AM
PS
/UM
PA
-
-
-
-
-
-
-
-
-
-
-
-
-
Gem
stat
e12
7,74
8
10
,646
10,6
46
10,6
46
10,6
46
10,6
46
10
,646
10,6
46
10
,646
10,6
46
10,6
46
10,6
46
10,6
46
G
eorg
ia-P
acifi
c C
amas
-
-
-
-
-
-
-
-
-
-
-
-
-
Her
mis
ton
Pur
chas
e-
-
-
-
-
-
-
-
-
-
-
-
-
H
unte
r S
olar
556,
332
29,2
85
33
,200
50
,578
52
,787
60
,193
62,2
88
59
,215
55,6
65
51
,903
44
,293
31
,415
25
,511
Hur
rican
e P
urch
ase
-
-
-
-
-
-
-
-
-
-
-
-
-
IPP
Pur
chas
e-
-
-
-
-
-
-
-
-
-
-
-
-
M
agC
orp
-
-
-
-
-
-
-
-
-
-
-
-
-
Mag
Cor
p R
eser
ves
397,
169
32,8
89
33
,202
32
,889
32
,889
32
,889
32,8
89
31
,949
33,5
15
33
,515
33
,515
33
,515
33
,515
Mili
can
Sol
ar20
6,69
6
5,
363
10,7
97
16,0
10
20,1
51
23,9
17
26
,034
29,3
18
25
,906
20,8
49
13,6
52
8,74
4
5,
956
Milf
ord
Sol
ar55
3,12
1
28
,013
32,2
59
47,5
85
52,9
29
62,2
26
65
,608
58,4
26
56
,246
52,4
67
42,3
14
30,7
77
24,2
70
N
ucor
556,
916
46,4
10
46
,410
46
,410
46
,410
46
,410
46,4
10
46
,410
46,4
10
46
,410
46
,410
46
,410
46
,410
Exhibit MGW-5 Page 1 of 4
WA
GR
C21
Apr
il U
pdat
eTo
tal
Jan-
21Fe
b-21
Mar
-21
Apr
-21
May
-21
Jun-
21Ju
l-21
Aug
-21
Sep-
21O
ct-2
1N
ov-2
1D
ec-2
1O
ld M
ill S
olar
-
-
-
-
-
-
-
-
-
-
-
-
-
Mon
sant
o R
eser
ves
1,56
2,22
0
130,
185
13
0,18
5
13
0,18
5
13
0,18
5
13
0,18
5
130,
185
13
0,18
5
130,
185
13
0,18
5
13
0,18
5
13
0,18
5
13
0,18
5
Pav
ant I
II S
olar
-
-
-
-
-
-
-
-
-
-
-
-
-
PG
E C
ove
11,5
11
959
95
9
959
95
9
959
95
9
95
9
95
9
959
95
9
959
95
9
Prin
evill
e S
olar
140,
249
6,40
6
7,
173
10,6
36
13,3
88
15,8
90
17
,296
19,4
78
17
,211
13,8
51
9,07
0
5,
809
4,04
0
R
ock
Riv
er W
ind
308,
243
50,4
81
39
,205
41
,189
34
,046
22
,172
20,4
24
14
,153
15,0
69
20
,435
38
,282
12
,788
-
Sig
urd
Sol
ar22
6,95
7
-
-
-
-
-
1,
849
51
,572
47,2
75
44
,137
35
,815
25
,170
21
,139
Sm
all P
urch
ases
eas
t1,
063
87
90
87
87
92
89
91
89
86
86
90
87
Sm
all P
urch
ases
wes
t-
-
-
-
-
-
-
-
-
-
-
-
-
S
oda
Lake
Geo
ther
mal
-
-
-
-
-
-
-
-
-
-
-
-
-
Thr
ee B
utte
s W
ind
1,60
8,33
4
217,
217
14
0,64
6
16
6,22
6
12
5,76
3
11
1,28
5
93,4
17
62
,935
74,3
35
91
,978
13
5,34
3
18
2,81
6
20
6,37
3
Top
of t
he W
orld
Win
d3,
168,
317
42
3,35
4
281,
332
330,
509
254,
481
226,
646
18
6,83
8
133,
920
14
6,17
9
178,
527
273,
876
349,
471
383,
184
T
ri-S
tate
Pur
chas
e-
-
-
-
-
-
-
-
-
-
-
-
-
W
est V
alle
y T
oll
-
-
-
-
-
-
-
-
-
-
-
-
-
Wol
verin
e C
reek
Win
d80
3,02
9
59
,531
69,5
58
88,5
19
81,5
83
61,7
36
66
,054
52,3
41
50
,069
58,9
31
64,8
87
75,1
79
74,6
41
Long
Ter
m F
irm P
urch
ases
Tot
al12
,587
,483
1,
272,
092
1,03
8,92
6
1,18
5,87
5
1,06
9,83
1
991,
387
93
2,48
7
875,
713
85
5,04
9
926,
824
1,08
3,28
8
1,14
4,86
3
1,21
1,14
7
Sea
sona
l Pur
chas
ed P
ower
Con
stel
latio
n 20
13-2
016
-
-
-
-
-
-
-
-
-
-
-
-
-
Sea
sona
l Pur
chas
ed P
ower
Tot
al-
-
-
-
-
-
-
-
-
-
-
-
-
Qua
lifyi
ng F
acili
ties
QF
Cal
iforn
ia-
-
-
-
-
-
-
-
-
-
-
-
-
Q
F Id
aho
-
-
-
-
-
-
-
-
-
-
-
-
-
QF
Ore
gon
-
-
-
-
-
-
-
-
-
-
-
-
-
QF
Uta
h-
-
-
-
-
-
-
-
-
-
-
-
-
Q
F W
ashi
ngto
n20
8,63
0
-
-
-
3,59
8
16
,682
34,2
92
47
,832
51,6
03
41
,039
13
,584
-
-
QF
Wyo
min
g-
-
-
-
-
-
-
-
-
-
-
-
-
B
iom
ass
One
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Bos
wel
l Win
d I Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
B
osw
ell W
ind
II Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
B
osw
ell W
ind
III Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
B
osw
ell W
ind
IV Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
C
hevr
on W
ind
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
DC
FP
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Ent
erpr
ise
Sol
ar I
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Esc
alan
te S
olar
I Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
E
scal
ante
Sol
ar II
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Esc
alan
te S
olar
III Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
E
verg
reen
Bio
Pow
er Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
E
xxon
Mob
il Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
F
ive
Pin
e W
ind
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Foo
te C
reek
III W
ind
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Gle
n C
anyo
n A
Sol
ar Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
G
len
Can
yon
B S
olar
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Gra
nite
Mou
ntai
n E
ast S
olar
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Gra
nite
Mou
ntai
n W
est S
olar
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Iron
Spr
ings
Sol
ar Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
K
enne
cott
Ref
iner
y Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
K
enne
cott
Sm
elte
r Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
La
tigo
Win
d P
ark
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Mon
ticel
lo W
ind
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Mou
ntai
n W
ind
1 Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
M
ount
ain
Win
d 2
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Nor
th P
oint
Win
d Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
O
rego
n W
ind
Far
m Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
P
avan
t II S
olar
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Pio
neer
Win
d P
ark
I QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Pow
er C
ount
y N
orth
Win
d Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
P
ower
Cou
nty
Sou
th W
ind
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Ros
ebur
g D
illar
d Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
S
age
I Sol
ar Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
S
age
II S
olar
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Sag
e III
Sol
ar Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
S
pani
sh F
ork
Win
d 2
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Sun
nysi
de Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
S
wee
twat
er S
olar
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Tes
oro
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Thr
eem
ile C
anyo
n W
ind
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Thr
ee P
eaks
Sol
ar Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
U
tah
Pav
ant S
olar
QF
-
-
-
-
-
-
-
-
-
-
-
-
-
Uta
h R
ed H
ills
Sol
ar Q
F-
-
-
-
-
-
-
-
-
-
-
-
-
Exhibit MGW-5 Page 2 of 4
WA
GR
C21
Apr
il U
pdat
eTo
tal
Jan-
21Fe
b-21
Mar
-21
Apr
-21
May
-21
Jun-
21Ju
l-21
Aug
-21
Sep-
21O
ct-2
1N
ov-2
1D
ec-2
1Q
ualif
ying
Fac
ilitie
s T
otal
208,
630
-
-
-
3,
598
16,6
82
34
,292
47,8
32
51
,603
41,0
39
13,5
84
-
-
Mid
-Col
umbi
a C
ontr
acts
Dou
glas
- W
ells
-
-
-
-
-
-
-
-
-
-
-
-
-
Gra
nt R
easo
nabl
e(2
2,99
4)
(1,9
16)
(1,9
16)
(1
,916
)
(1,9
16)
(1
,916
)
(1
,916
)
(1
,916
)
(1
,916
)
(1
,916
)
(1,9
16)
(1
,916
)
(1,9
16)
Gra
nt M
eani
ngfu
l Prio
rity
-
-
-
-
-
-
-
-
-
-
-
-
-
Gra
nt S
urpl
us16
4,38
5
13
,699
13,6
99
13,6
99
13,6
99
13,6
99
13
,699
13,6
99
13
,699
13,6
99
13,6
99
13,6
99
13,6
99
G
rant
- P
riest
Rap
ids
-
-
-
-
-
-
-
-
-
-
-
-
-
Mid
-Col
umbi
a C
ontr
acts
Tot
al14
1,39
2
11
,783
11,7
83
11,7
83
11,7
83
11,7
83
11
,783
11,7
83
11
,783
11,7
83
11,7
83
11,7
83
11,7
83
Tot
al L
ong
Ter
m F
irm P
urch
ases
12,9
37,5
04
1,28
3,87
4
1,
050,
709
1,
197,
658
1,
085,
212
1,
019,
852
978,
562
93
5,32
7
918,
435
97
9,64
5
1,
108,
655
1,
156,
646
1,
222,
930
Sto
rage
& E
xcha
nge
AP
S E
xcha
nge
-
-
-
-
-
-
-
-
-
-
-
-
-
Bla
ck H
ills
CT
s-
-
-
-
-
-
-
-
-
-
-
-
-
B
PA
Exc
hang
e-
-
-
-
-
-
-
-
-
-
-
-
-
B
PA
FC
II W
ind
-
-
-
-
-
-
-
-
-
-
-
-
-
BP
A F
C IV
Win
d-
-
-
-
-
-
-
-
-
-
-
-
-
B
PA
So.
Idah
o-
-
-
-
-
-
-
-
-
-
-
-
-
C
owlit
z S
wift
-
-
-
-
-
-
-
-
-
-
-
-
-
EW
EB
FC
I-
-
-
-
-
-
-
-
-
-
-
-
-
P
SC
o E
xcha
nge
-
-
-
-
-
-
-
-
-
-
-
-
-
PS
CO
FC
III
-
-
-
-
-
-
-
-
-
-
-
-
-
Red
ding
Exc
hang
e-
-
-
-
-
-
-
-
-
-
-
-
-
S
CL
Sta
te L
ine
-
-
-
-
-
-
-
-
-
-
-
-
-
Tri-
Sta
te E
xcha
nge
-
-
-
-
-
-
-
-
-
-
-
-
-
Tot
al S
tora
ge &
Exc
hang
e-
-
-
-
-
-
-
-
-
-
-
-
-
Sho
rt T
erm
Firm
Pur
chas
es-
-
-
-
-
-
-
-
-
-
-
-
-
C
OB
-
-
-
-
-
-
-
-
-
-
-
-
-
Col
orad
o-
-
-
-
-
-
-
-
-
-
-
-
-
F
our
Cor
ners
-
-
-
-
-
-
-
-
-
-
-
-
-
Idah
o-
-
-
-
-
-
-
-
-
-
-
-
-
M
ead
-
-
-
-
-
-
-
-
-
-
-
-
-
Mid
Col
umbi
a85
,485
28
,120
26,9
95
30,3
70
-
-
-
-
-
-
-
-
-
M
ona
-
-
-
-
-
-
-
-
-
-
-
-
-
NO
B-
-
-
-
-
-
-
-
-
-
-
-
-
P
alo
Ver
de-
-
-
-
-
-
-
-
-
-
-
-
-
S
P15
-
-
-
-
-
-
-
-
-
-
-
-
-
Uta
h-
-
-
-
-
-
-
-
-
-
-
-
-
W
ashi
ngto
n-
-
-
-
-
-
-
-
-
-
-
-
-
W
est M
ain
-
-
-
-
-
-
-
-
-
-
-
-
-
Wyo
min
g-
-
-
-
-
-
-
-
-
-
-
-
-
ST
F E
lect
ric S
wap
s-
-
-
-
-
-
-
-
-
-
-
-
-
S
TF
Inde
x T
rade
s-
-
-
-
-
-
-
-
-
-
-
-
-
Tot
al S
hort
Ter
m F
irm P
urch
ases
85,4
85
28,1
20
26
,995
30
,370
-
-
-
-
-
-
-
-
-
Sys
tem
Bal
anci
ng P
urch
ases
CO
B96
7,13
3
56
,462
116,
554
63,3
65
27,1
61
22,1
36
10
3,80
0
161,
173
13
8,55
1
69,9
52
15,4
07
15,7
06
176,
864
F
our
Cor
ners
1,20
4,80
2
123,
966
17
9,83
4
23
6,43
2
13
0,21
5
37
,657
3,95
3
21,7
43
13
,842
93,7
13
122,
018
135,
153
106,
276
M
ead
364,
332
18,7
15
37
,690
26
,425
20
,764
18
,194
25,5
75
49
,315
25,8
84
56
,413
31
,171
22
,175
32
,010
Mid
Col
umbi
a4,
831,
613
61
1,83
9
114,
072
51,1
09
235,
769
852,
122
57
6,02
8
1,12
0,80
9
74
5,84
7
192,
824
89,5
82
97,6
87
143,
925
M
ona
696,
281
113,
019
62
,619
22
,869
36
,892
47
,835
1,42
1
42,6
60
40
,133
13,2
93
107,
514
93,8
47
114,
177
N
OB
530,
878
-
8,
883
15,9
41
68,2
08
-
17
8
18
8,65
5
138,
022
98
,954
-
-
12
,038
Pal
o V
erde
98,7
66
8,23
1
8,
231
8,23
1
8,
231
8,23
1
8,
231
8,
231
8,
231
8,23
1
8,
231
8,23
1
8,
231
EIM
Impo
rts/
Exp
orts
(5,0
45,5
05)
(2
71,6
30)
(2
42,3
32)
(670
,100
)
(6
83,1
82)
(700
,863
)
(248
,189
)
(543
,992
)
(561
,899
)
(383
,847
)
(2
32,7
40)
(227
,431
)
(2
79,2
99)
E
mer
genc
y P
urch
ases
17,8
69,4
70
6,21
1,37
6
3,
387,
469
77
1,53
0
29
5,59
8
24
5,54
0
37,4
13
3,
555
17
0
352,
764
1,83
1
1,
582,
418
4,
979,
804
Tot
al S
yste
m B
alan
cing
Pur
chas
es21
,517
,769
6,
871,
977
3,67
3,01
8
525,
802
139,
656
530,
853
50
8,40
9
1,05
2,14
9
54
8,78
1
502,
297
143,
015
1,72
7,78
8
5,29
4,02
5
Tot
al P
urch
ased
Pow
er &
Net
Inte
rcha
nge
34,5
40,7
58
8,18
3,97
2
4,
750,
722
1,
753,
829
1,
224,
869
1,
550,
704
1,48
6,97
1
1,
987,
476
1,46
7,21
5
1,
481,
942
1,
251,
670
2,
884,
433
6,
516,
955
Whe
elin
g &
U. o
f F. E
xpen
seF
irm W
heel
ing
10,6
78,3
24
940,
784
90
9,18
4
88
6,55
3
83
5,06
0
82
6,49
2
890,
137
91
8,29
3
898,
144
87
4,33
0
84
5,38
8
89
0,18
7
96
3,77
1
C&
T E
IM A
dmin
fee
162,
122
11,3
79
9,
752
12,8
24
15,7
44
18,4
48
16
,115
14,5
52
14
,166
12,2
99
12,1
11
11,8
46
12,8
86
ST
Firm
& N
on-F
irm2,
769
625
16
9
55
-
12
29
484
363
53
6
35
90
371
Exhibit MGW-5 Page 3 of 4
WA
GR
C21
Apr
il U
pdat
eTo
tal
Jan-
21Fe
b-21
Mar
-21
Apr
-21
May
-21
Jun-
21Ju
l-21
Aug
-21
Sep-
21O
ct-2
1N
ov-2
1D
ec-2
1T
otal
Whe
elin
g &
U. o
f F. E
xpen
se10
,843
,216
95
2,78
8
919,
105
899,
431
850,
804
844,
953
90
6,28
2
933,
329
91
2,67
3
887,
166
857,
534
902,
124
977,
028
Coa
l Fue
l Bur
n E
xpen
seC
arbo
n-
-
-
-
-
-
-
-
-
-
-
-
-
C
holla
-
-
-
-
-
-
-
-
-
-
-
-
-
Col
strip
1,59
6,38
5
204,
447
16
1,27
7
14
5,23
1
10
2,67
5
92
,541
104,
744
16
5,27
4
161,
435
12
3,04
4
63
,512
90
,970
18
1,23
6
Cra
ig-
-
-
-
-
-
-
-
-
-
-
-
-
D
ave
John
ston
-
-
-
-
-
-
-
-
-
-
-
-
-
Hay
den
-
-
-
-
-
-
-
-
-
-
-
-
-
Hun
ter
-
-
-
-
-
-
-
-
-
-
-
-
-
Hun
tingt
on-
-
-
-
-
-
-
-
-
-
-
-
-
Ji
m B
ridge
r49
,096
,323
3,
706,
467
3,72
0,76
1
4,21
0,87
5
3,07
1,31
6
2,84
6,20
8
3,
875,
112
5,62
6,75
9
5,
600,
252
4,18
2,88
1
4,18
2,98
1
4,18
3,95
3
3,88
8,75
7
N
augh
ton
-
-
-
-
-
-
-
-
-
-
-
-
-
Wyo
dak
-
-
-
-
-
-
-
-
-
-
-
-
-
Tot
al C
oal F
uel B
urn
Exp
ense
50,6
92,7
08
3,91
0,91
4
3,
882,
037
4,
356,
106
3,
173,
991
2,
938,
749
3,97
9,85
6
5,
792,
033
5,76
1,68
7
4,
305,
925
4,
246,
493
4,
274,
923
4,
069,
993
Gas
Fue
l Bur
n E
xpen
seC
heha
lis10
,280
,586
48
8,45
3
276,
010
726,
446
591,
971
825,
364
68
3,62
8
1,11
6,62
3
1,
126,
486
1,04
3,63
9
1,19
1,85
7
941,
818
1,26
8,29
1
2,
129,
480
Cur
rant
Cre
ek-
-
-
-
-
-
-
-
-
-
-
-
-
G
adsb
y-
-
-
-
-
-
-
-
-
-
-
-
-
G
adsb
y C
T-
-
-
-
-
-
-
-
-
-
-
-
-
H
erm
isto
n4,
561,
540
33
6,07
2
225,
093
244,
937
387,
980
78,3
26
30
0,53
3
465,
653
49
7,05
1
495,
724
530,
751
561,
919
437,
501
56
0,85
8
Lake
Sid
e 1
-
-
-
-
-
-
-
-
-
-
-
-
-
Lake
Sid
e 2
-
-
-
-
-
-
-
-
-
-
-
-
-
Littl
e M
ount
ain
-
-
-
-
-
-
-
-
-
-
-
-
-
Nau
ghto
n -
Gas
-
-
-
-
-
-
-
-
-
-
-
-
-
Tot
al G
as F
uel B
urn
14,8
42,1
25
824,
524
50
1,10
3
97
1,38
3
97
9,95
1
90
3,69
0
984,
161
1,
582,
277
1,62
3,53
7
1,
539,
363
1,
722,
608
1,
503,
737
1,
705,
792
Gas
Phy
sica
l-
-
-
-
-
-
-
-
-
-
-
-
-
G
as S
wap
s-
-
-
-
-
-
-
-
-
-
-
-
-
C
lay
Bas
in G
as S
tora
ge-
-
-
-
-
-
-
-
-
-
-
-
-
P
ipel
ine
Res
erva
tion
Fee
s3,
124,
173
26
4,50
0
243,
147
264,
500
257,
382
264,
500
25
7,38
2
264,
500
26
4,50
0
257,
382
264,
500
257,
382
264,
500
Tot
al G
as F
uel B
urn
Exp
ense
17,9
66,2
99
1,08
9,02
4
74
4,24
9
1,
235,
883
1,
237,
333
1,
168,
190
1,24
1,54
3
1,
846,
776
1,88
8,03
7
1,
796,
745
1,
987,
108
1,
761,
120
1,
970,
292
Oth
er G
ener
atio
nB
lund
ell
335,
710
33,0
92
25
,187
32
,567
31
,496
31
,760
28,3
05
29
,132
30,0
19
30
,277
24
,789
22
,225
16
,861
Blu
ndel
l Bot
tom
ing
Cyc
le-
-
-
-
-
-
-
-
-
-
-
-
-
C
edar
Spr
ings
Win
d II
-
-
-
-
-
-
-
-
-
-
-
-
-
Dun
lap
I Win
d-
-
-
-
-
-
-
-
-
-
-
-
-
E
kola
Fla
ts W
ind
-
-
-
-
-
-
-
-
-
-
-
-
-
Foo
te C
reek
I W
ind
-
-
-
-
-
-
-
-
-
-
-
-
-
Gle
nroc
k W
ind
-
-
-
-
-
-
-
-
-
-
-
-
-
Gle
nroc
k III
Win
d-
-
-
-
-
-
-
-
-
-
-
-
-
G
oodn
oe W
ind
-
-
-
-
-
-
-
-
-
-
-
-
-
Hig
h P
lain
s W
ind
-
-
-
-
-
-
-
-
-
-
-
-
-
Lean
ing
Juni
per
1-
-
-
-
-
-
-
-
-
-
-
-
-
M
aren
go I
Win
d-
-
-
-
-
-
-
-
-
-
-
-
-
M
aren
go II
Win
d-
-
-
-
-
-
-
-
-
-
-
-
-
M
cFad
den
Rid
ge W
ind
-
-
-
-
-
-
-
-
-
-
-
-
-
Pry
or M
ount
ain
Win
d-
-
-
-
-
-
-
-
-
-
-
-
-
R
ollin
g H
ills
Win
d-
-
-
-
-
-
-
-
-
-
-
-
-
S
even
Mile
Win
d-
-
-
-
-
-
-
-
-
-
-
-
-
S
even
Mile
II W
ind
-
-
-
-
-
-
-
-
-
-
-
-
-
Bla
ck C
ap S
olar
-
-
-
-
-
-
-
-
-
-
-
-
-
TB
Fla
ts W
ind
-
-
-
-
-
-
-
-
-
-
-
-
-
TB
Fla
ts W
ind
II-
-
-
-
-
-
-
-
-
-
-
-
-
Inte
grat
ion
Cha
rge
-
-
-
-
-
-
-
-
-
-
-
-
-
Tot
al O
ther
Gen
erat
ion
335,
710
33,0
92
25
,187
32
,567
31
,496
31
,760
28,3
05
29
,132
30,0
19
30
,277
24
,789
22
,225
16
,861
Net
Pow
er C
ost
112,
160,
477
13,9
58,8
57
10,1
70,3
27
8,11
2,86
0
6,51
7,67
7
6,53
3,91
2
7,
642,
275
9,72
9,01
5
9,
584,
808
8,50
1,06
0
8,02
7,79
9
9,83
9,44
2
13,5
42,4
46
Exhibit MGW-5 Page 4 of 4
Exh. MGW-6 Dockets UE-191024 et. al.
Witness: Michael G. Wilding
BEFORE THE WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION
WASHINGTON UTILITIES AND TRANSPORTATION COMMISSION,
Complainant,
v. PACIFICORP dba PACIFIC POWER & LIGHT COMPANY
Respondent.
Dockets UE-191024, UE-190750, UE-190929, UE-190981, UE-180778 (Consolidated)
PACIFICORP
EXHIBIT OF MICHAEL G. WILDING
Net Power Costs Update
April 2020
2021 Rate Case (WA) NPC ($) = 106,503,513
Impact ($)
Washington
Allocated Basis
Updates
U01 ‐ Klamath Hydro (1,628,043)
U02 ‐ Cholla 4 Retirement 781,179
U03 ‐ EIM Benefits (1,092,549)
U04 ‐ Coal Fuel Expense 1,309,458
U05 ‐ Wheeling (429,296)
U06 ‐ Official Forward Price Curve (1912) 2,369,458
U07 ‐ Long Term Contracts and Resources 204,660
U08 ‐ Transmission Links (2,264,491)
U09 ‐ Grant Meaningful Hydro Contract 2,761,828
Commission Order
U10 ‐ Colstrip 4 Outage (42,882)
Total Change from Initial Filing ($)= 5,656,963
2021 Rate Case April Update (WA) NPC ($) = 112,160,477
Exhibit MGW-6 Page 1 of 1
Recommended