20240830Quarterly Report.pdf

August 30, 2024
VIA ELECTRONIC DELIVERY
Commission Secretary
Idaho Public Utilities Commission
11331 W. Chinden Blvd.
Building 8 Suite 201A
Boise, ID 83714
Re: Rocky Mountain Power’s
Quarterly Energy Cost Adjustment Mechanism Report
Q2 2024 (January 2024 through June 2024)
Attention: Commission Secretary
Please find enclosed for review Rocky Mountain Power’s (“RMP”) Q2 2024 (January 1, 2024
through June 30, 2024) energy cost adjustment mechanism (“ECAM”) report and a confidential
zip folder containing the ECAM work papers. The Idaho Public Utilities Commission (“IPUC”)
authorized implementation of an ECAM in Order No. 30904 to track and defer the difference
between base net power costs (“NPC”), established in a general rate case (“GRC”), and actual
NPC incurred by RMP to serve its Idaho customers.
This report contains confidential information. The confidential information is provided to those
that have executed the confidentiality agreement to receive this quarterly ECAM report.
Informal inquiries may be directed to Mark Alder, Idaho Regulatory Manager at [phone].
Sincerely,
Joelle Steward
Senior Vice President, Regulation
Enclosures
cc: Chris McEwan
Mike Louis (C)
TJ Budge (C)
Brian Collins (C)
Maurice Brubaker (C)
Greg Meyer
Eric Olsen (C)
Mike Veile
RECEIVED
Friday, August 30, 2024
IDAHO PUBLIC
UTILITIES COMMISSION

Idaho
Energy Cost Adjustment Mechanism (ECAM)
Q2 2024
(January 1, 2024 through June 30, 2024)

Summary
Summary Table of Deferred ECAM Balance
NPC Differential for Deferral 32,029,532$
EITF 04-6 Adjustment (421,376)
LCAR (160,447)
Total Deferral Before Sharing 31,447,709
Sharing Band 90%
Customer Responsibility 28,302,938
Production Tax Credits (752,479)
REP QF Adjustment -
Wind Liquidated Damages -
REC Deferral (456,313)
Interest on Deferral 2,138,971
Annual Deferral (Jan - Dec 2024) 29,233,118
Unamortized Previous Balance 75,419,507
ECAM Rider Revenues (15,966,580)
Total Company Recovery 88,686,045$
-

Idaho
Energy Cost Adjustment Mechanism (ECAM)
Q2 2024
(January 1, 2024 through June 30, 2024)

Exhibit 1
Idaho Energy Cost Adjustment Mechanism Deferral
January 1, 2024 - December 31, 2024
Line
No.
CY 2021
1 ID Base NPC Embedded in Rates ($) PAC-E-21-07 86,534,565$
2 Annual Idaho Base Load @ meter (MWh) PAC-E-21-07 3,526,359
3 NPC Rate Embedded in Base Rates ($/MWh) Line 1 / Line 2 24.54$
Jan-24 Feb-24 Mar-24 Apr-24 May-24 Jun-24 Jul-24 Aug-24
4 NPC Rate Embedded in Base Rates ($/MWh) Line 3 24.54$ 24.54$ 24.54$ 24.54$ 24.54$ 24.54$
5 ID Actual Sales @ Meter (MWh)287,264 259,852 269,758 247,416 290,257 426,991
6 ID NPC Collected in Rates ($) Line 4 x Line 5 7,049,281$ 6,376,599$ 6,619,675$ 6,071,437$ 7,122,723$ 10,478,077$
7 Total Company Adjusted Actual NPC ($)Adjusted Actual NPC 335,453,117$ 198,950,187$ 176,083,249$ 166,496,709$ 170,813,011$ 206,986,991$
8 Total Company Load @ Input (MWh) 5,470,924 4,920,330 5,135,244 4,554,467 4,596,442 4,727,056
9 Actual NPC ($/MWh) Line 7 / Line 8 61.32$ 40.43$ 34.29$ 36.56$ 37.16$ 43.79$
10 ID Actual Load @ Input (MWh)303,538 284,568 294,802 252,861 273,264 368,186
11 Actual ID NPC Line 9 x Line 10 18,611,621$ 11,506,317$ 10,108,512$ 9,243,795$ 10,155,044$ 16,122,035$
12 NPC Differential Line 11 - Line 6 11,562,340$ 5,129,718$ 3,488,837$ 3,172,358$ 3,032,321$ 5,643,958$
EITF 04-6 Adjustment
13 Idaho Allocated EITF 04-6 Deferral Adjustment ($)(4,692)$ 21,938$ (62,349)$ (99,067)$ (162,684)$ (114,522)$
LCAR
14 Actual Idaho Jurisdictional ECPC minus NPC (Assume Actual = B PAC-E-21-07 2,568,242$ 2,568,242$ 2,568,242$ 2,568,242$ 2,568,242$ 2,568,242$
15 LCAR Rate @ Meter ($/MWh) PAC-E-21-07 8.74$ 8.74$ 8.74$ 8.74$ 8.74$ 8.74$
16 ID Actual Sales @ Meter (MWh) Line 5 287,264 259,852 269,758 247,416 290,257 426,991
17 LCAR Revenue Collected through Base Rates ($) Line 15 x Line 16 2,510,571$ 2,270,998$ 2,357,568$ 2,162,316$ 2,536,727$ 3,731,721$
18 LCAR Adjustment Line 14 - Line 17 57,672$ 297,244$ 210,674$ 405,926$ 31,516$ (1,163,479)$
ECAM Deferral
19 Total ECAM Deferral (NPC Deferral, EITF 04-6 Adjustment, LCARSum of Lines: 12, 13, 18 11,615,320 5,448,901 3,637,162 3,479,217 2,901,152 4,365,957
20 Total ECAM Deferral after 90% Sharing Line 19 x 90%10,453,788$ 4,904,011$ 3,273,446$ 3,131,296$ 2,611,037$ 3,929,361$
Production Tax Credits (PTCs)
21 ID Allocated PTCs in Rates ($/MWh) PAC-E-21-07 (4.16)$ (4.16)$ (4.16)$ (4.16)$ (4.16)$ (4.16)$
22 ID Actual Sales @ Meter (MWh) Line 5 287,264 259,852 269,758 247,416 290,257 426,991
23 ID PTCs in Rates ($) Line 21 x Line 22 (1,196,146)$ (1,082,003)$ (1,123,249)$ (1,030,222)$ (1,208,608)$ (1,777,955)$
24 ID Allocated Actual PTCs ($)(1,320,014) (1,336,496) (1,355,336) (1,385,439) (1,415,869) (1,357,507)
25 ID PTCs Deferral ($) Line 24 - Line 23 (123,868)$ (254,493)$ (232,087)$ (355,218)$ (207,261)$ 420,448$
Situs Assigned REP QF Adjustment
26 ID REP QF Adjustment ($)-$ -$ -$ -$ -$ -$
Wind Liquidated Damages
27 ID Allocated Wind Liquidated Damages ($)-$ -$ -$ -$ -$ -$
Renewable Energy Credits (REC) Revenue
28 ID REC Revenue in Rates ($/MWh) PAC-E-21-07 (0.07)$ (0.07)$ (0.07)$ (0.07)$ (0.07)$ (0.07)$
29 ID Actual Sales @ Meter (MWh) Line 5 287,264 259,852 269,758 247,416 290,257 426,991
Idaho Energy Cost Adjustment Mechanism Deferral
January 1, 2024 - December 31, 2024
Line
No.
CY 2021
30 ID REC Revenue in Rates ($) Line 28 x Line 29 (19,663)$ (17,787)$ (18,465)$ (16,936)$ (19,868)$ (29,228)$
31 ID Allocated Actual REC Revenue ($)(157,001) (243,837) (158,696) (10,904) (3,672) (4,149)
32 REC Revenue Adjustment ($) Line 31 - Line 30 (137,338)$ (226,050)$ (140,231)$ 6,032$ 16,197$ 25,079$
33 Total Deferral Sum of Lines 20, 25, 26, 27, 32 10,192,581$ 4,423,468$ 2,901,127$ 2,782,110$ 2,419,972$ 4,374,888$
34 Interest Rate Order No. 36000 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00% 5.00%
ECAM Balancing Account ($)
35 Beginning Balance 75,419,507$ 83,678,213$ 85,993,611$ 86,913,961$ 87,687,918$ 88,096,109$
36 ECAM Deferral After Sharing Line 20 10,453,788 4,904,011 3,273,446 3,131,296 2,611,037 3,929,361
37 PTCs Deferral Line 25 (123,868) (254,493) (232,087) (355,218) (207,261) 420,448
38 REP Situs Adjustment Line 26 - - - - - -
39 Wind Liquidated Damages Line 27 - - - - - -
40 REC Revenue Adjustment Line 32 (137,338) (226,050) (140,231) 6,032 16,197 25,079
41 Less: Monthly ECAM Rider Revenues allocated to ECAM (2,264,640) (2,460,818) (2,340,253) (2,371,150) (2,377,237) (4,152,482)
42 Interest 330,764 352,748 359,475 362,998 365,455 367,530
43 Total ECAM Deferral Balance ($)83,678,213$ 85,993,611$ 86,913,961$ 87,687,918$ 88,096,109$ 88,686,045$ -$ -$
Idaho Energy Cost Adjustment Mechanism Deferral
January 1, 2024 - December 31, 2024
Line
No.
1 ID Base NPC Embedded in Rates ($) PAC-E-21-07
2 Annual Idaho Base Load @ meter (MWh) PAC-E-21-07
3 NPC Rate Embedded in Base Rates ($/MWh) Line 1 / Line 2
4 NPC Rate Embedded in Base Rates ($/MWh) Line 3
5 ID Actual Sales @ Meter (MWh)
6 ID NPC Collected in Rates ($) Line 4 x Line 5
7 Total Company Adjusted Actual NPC ($)Adjusted Actual NPC
8 Total Company Load @ Input (MWh)
9 Actual NPC ($/MWh) Line 7 / Line 8
10 ID Actual Load @ Input (MWh)
11 Actual ID NPC Line 9 x Line 10
12 NPC Differential Line 11 - Line 6
EITF 04-6 Adjustment
13 Idaho Allocated EITF 04-6 Deferral Adjustment ($)
LCAR
14 Actual Idaho Jurisdictional ECPC minus NPC (Assume Actual = B PAC-E-21-07
15 LCAR Rate @ Meter ($/MWh) PAC-E-21-07
16 ID Actual Sales @ Meter (MWh) Line 5
17 LCAR Revenue Collected through Base Rates ($) Line 15 x Line 16
18 LCAR Adjustment Line 14 - Line 17
ECAM Deferral
19 Total ECAM Deferral (NPC Deferral, EITF 04-6 Adjustment, LCARSum of Lines: 12, 13, 18
20 Total ECAM Deferral after 90% Sharing Line 19 x 90%
Production Tax Credits (PTCs)
21 ID Allocated PTCs in Rates ($/MWh) PAC-E-21-07
22 ID Actual Sales @ Meter (MWh) Line 5
23 ID PTCs in Rates ($) Line 21 x Line 22
24 ID Allocated Actual PTCs ($)
25 ID PTCs Deferral ($) Line 24 - Line 23
Situs Assigned REP QF Adjustment
26 ID REP QF Adjustment ($)
Wind Liquidated Damages
27 ID Allocated Wind Liquidated Damages ($)
Renewable Energy Credits (REC) Revenue
28 ID REC Revenue in Rates ($/MWh) PAC-E-21-07
29 ID Actual Sales @ Meter (MWh) Line 5
Sep-24 Oct-24 Nov-24 Dec-24 Total
43,717,792$
1,254,783,264$
29,404,464
42.67$
75,747,324$
32,029,532$
(421,376)$
15,409,454$
15,569,901$
(160,447)$
31,447,709
28,302,938$
(752,479)$
-$
-$
Idaho Energy Cost Adjustment Mechanism Deferral
January 1, 2024 - December 31, 2024
Line
No.
30 ID REC Revenue in Rates ($) Line 28 x Line 29
31 ID Allocated Actual REC Revenue ($)
32 REC Revenue Adjustment ($) Line 31 - Line 30
33 Total Deferral Sum of Lines 20, 25, 26, 27, 32
34 Interest Rate Order No. 36000
ECAM Balancing Account ($)
35 Beginning Balance
36 ECAM Deferral After Sharing Line 20
37 PTCs Deferral Line 25
38 REP Situs Adjustment Line 26
39 Wind Liquidated Damages Line 27
40 REC Revenue Adjustment Line 32
41 Less: Monthly ECAM Rider Revenues allocated to ECAM
42 Interest
43 Total ECAM Deferral Balance ($)
(456,313)$
27,094,147$
5.00% 5.00% 5.00% 5.00%
-$ -$ -$ -$ 88,686,045$