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Home My WebLink About20230913IPC to Staff Supplemental 280.pdf LISA D. NORDSTROM Lead Counsel lnordstrom@idahopower.com September 13, 2023 VIA ELECTRONIC FILING Jan Noriyuki, Secretary Idaho Public Utilities Commission 11331 W. Chinden Blvd., Bldg 8, Suite 201-A (83714) PO Box 83720 Boise, Idaho 83720-0074 Re: Case No. IPC-E-23-11 Idaho Power Company’s General Rate Case Dear Ms. Noriyuki: Enclosed for electronic filing, please find Idaho Power Company’s Supplemental Response to the Sixteenth Production Request of the Commission Staff to Idaho Power Company. Due to the collectively voluminous confidential and non-confidential information provided in response to data requests in this case, the Company is posting the attachments to these requests to the secure FTP site to allow parties to view the requested information remotely unless otherwise noted in the response. Because certain attachments contain confidential information, the FTP site is divided between confidential and non-confidential information. The login information for the non-confidential portion of the FTP site has been provided to all parties that have intervened to date. The login information for the confidential portion of the FTP site has been provided the parties that have executed the Protective Agreement in this matter. If you have any questions about the attached filing, please do not hesitate to contact me. Very truly yours, Lisa D. Nordstrom LDN:cd Enclosures RECEIVED 2023 SEPTEMBER 13, 2023 4:24PM IDAHO PUBLIC UTILITIES COMMISSION IDAHO POWER COMPANY’S SUPPLEMENTAL RESPONSE TO THE SIXTEENTH PRODUCTION REQUEST OF THE COMMISSION STAFF - 1 LISA D. NORDSTROM (ISB No. 5733) DONOVAN E. WALKER (ISB No. 5921) MEGAN GOICOECHEA ALLEN (ISB No. 7623) Idaho Power Company 1221 West Idaho Street (83702) P.O. Box 70 Boise, Idaho 83707 Telephone: (208) 388-5825 Facsimile: (208) 388-6936 lnordstrom@idahopower.com dwalker@idahopower.com mgoicoecheaallen@idahopower.com Attorneys for Idaho Power Company BEFORE THE IDAHO PUBLIC UTILITIES COMMISSION IN THE MATTER OF THE APPLICATION OF IDAHO POWER COMPANY FOR AUTHORITY TO INCREASE ITS RATES AND CHARGES FOR ELECTRIC SERVICE IN THE STATE OF IDAHO AND FOR ASSOCIATED REGULATORY ACCOUNTING TREATMENT. ) ) ) ) ) ) ) ) ) ) CASE NO. IPC-E-23-11 IDAHO POWER COMPANY’S SUPPLEMENTAL RESPONSE TO THE SIXTEENTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY COMES NOW, Idaho Power Company (“Idaho Power” or “Company”), and in response to the Sixteenth Production Request of the Commission Staff (“Commission” or “Staff”) dated August 29, 2023, herewith supplements the following information: IDAHO POWER COMPANY’S SUPPLEMENTAL RESPONSE TO THE SIXTEENTH PRODUCTION REQUEST OF THE COMMISSION STAFF - 2 REQUEST FOR PRODUCTION NO. 280: Please provide the model, all the input data, definitions of the variables, and source information for all the data used in the 2022 weather normalization models discussed in the file named, "Attachment 2 - Response to Staff Request No. 228." For each customer class, please provide all historical input data available (from late 1990s), as discussed on the August 29, 2023 meeting with the Company. In addition, please provide all model outputs including model coefficients, statistics, and residuals. Please provide all files in electronic format with all formulas intact and enabled. SUPPLEMENTAL RESPONSE TO REQUEST FOR PRODUCTION NO. 280: Please see Attachments 1-10 for the Company’s weather normalization models updated through year end 2022. This supplements the weather model data that ended with weather data through 2021 within the original 280 attachments 1-10. - Attachment 1: Irrigation Weather Adjustment Model - Canyon - Attachment 2: Irrigation Weather Adjustment Model - Capitol - Attachment 3: Irrigation Weather Adjustment Model - Eastern - Attachment 4: Irrigation Weather Adjustment Model - Oregon - Attachment 5: Irrigation Weather Adjustment Model - Payette - Attachment 6: Irrigation Weather Adjustment Model - Southern - Attachment 7: System Commercial Weather Adjustment Model - Attachment 8: Oregon Commercial Weather Adjustment Model - Attachment 9: System Residential Weather Adjustment Model - Attachment 10: Oregon Residential Weather Adjustment Model In addition, please see Attachment 11 for the results of running these models to establish the 2022 Normalized sales and a comparative of that outcome. The response to this Request is sponsored by Jordan Prassinos, Manager Load Forecast and Principal Economist, Idaho Power Company. IDAHO POWER COMPANY’S SUPPLEMENTAL RESPONSE TO THE SIXTEENTH PRODUCTION REQUEST OF THE COMMISSION STAFF - 3 DATED at Boise, Idaho, this 13th day of September 2023. LISA D. NORDSTROM Attorney for Idaho Power Company DONOVAN E. WALKER Attorney for Idaho Power Company MEGAN GOICOECHEA ALLEN Attorney for Idaho Power Company IDAHO POWER COMPANY’S SUPPLEMENTAL RESPONSE TO THE SIXTEENTH PRODUCTION REQUEST OF THE COMMISSION STAFF - 4 CERTIFICATE OF SERVICE I HEREBY CERTIFY that on the 13th day of September 2023, I served a true and correct copy of Idaho Power Company’s Supplemental Response to the Sixteenth Production Request of the Commission Staff to Idaho Power Company upon the following named parties by the method indicated below, and addressed to the following: Commission Staff Dayn Hardie Chris Burdin Deputy Attorney General Idaho Public Utilities Commission 11331 W. Chinden Blvd., Bldg No. 8 Suite 201-A (83714) PO Box 83720 Boise, ID 83720-0074 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email Dayn.Hardie@puc.idaho.gov Chris.Burdin@puc.idaho.gov Clean Energy Opportunities for Idaho Kelsey Jae Law for Conscious Leadership 920 N. Clover Dr. Boise, ID 83703 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email Kelsey@kelseyjae.com Courtney White Mike Heckler Clean Energy Opportunities for Idaho 3778 Plantation River Drive, Suite 102 Boise, ID 83703 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email courtney@cleanenergyopportunities.com mike@cleanenergyopportunities.com Industrial Customers of Idaho Power Peter J. Richardson Richardson Adams, PLLC 515 N. 27th Street Boise, Idaho 83702 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email peter@richardsonadams.com IDAHO POWER COMPANY’S SUPPLEMENTAL RESPONSE TO THE SIXTEENTH PRODUCTION REQUEST OF THE COMMISSION STAFF - 5 Dr. Don Reading 280 Silverwood Way Eagle, Idaho 83616 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email dreading@mindspring.com Idaho Irrigation Pumpers Association, Inc. Eric L. Olsen ECHO HAWK & OLSEN, PLLC 505 Pershing Avenue, Suite 100 P.O. Box 6119 Pocatello, Idaho 83205 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email elo@echohawk.com Lance Kaufman, Ph.D. 2623 NW Bluebell Place Corvallis, OR 97330 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email lance@aegisinsight.com Micron Technology, Inc. Austin Rueschhoff Thorvald A. Nelson Austin W. Jensen Holland & Hart, LLP 555 Seventeenth Street, Suite 3200 Denver, Colorado 80202 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email darueschhoff@hollandhart.com tnelson@hollandhart.com awjensen@hollandhart.com aclee@hollandhart.com clmoser@hollandhart.com Jim Swier Micron Technology, Inc. 8000 South Federal Way Boise, Idaho 83707 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email jswier@micron.com IDAHO POWER COMPANY’S SUPPLEMENTAL RESPONSE TO THE SIXTEENTH PRODUCTION REQUEST OF THE COMMISSION STAFF - 6 City of Boise Ed Jewell Darrell Early Boise City Attorney’s Office 150 N. Capitol Blvd. Boise, ID 83701 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email ejewell@cityofboise.org dearly@cityofboise.org boca@cityofboise.org Wil Gehl Boise City Dept. of Public Works 150 N. Capitol Blvd. P.O. Box 500 Boise, Idaho 83701-0500 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email wgehl@cityofboise.org Idaho Conservation League Marie Callaway Kellner Idaho Conservation League 710 N. 6th Street Boise, Idaho 83702 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email mkellner@idahoconservation.org Brad Heusinkveld Idaho Conservation League 710 N. 6th Street Boise, Idaho 83702 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email bheusinkveld@idahoconservation.org IdaHydro C. Tom Arkoosh Arkoosh Law Offices 913 W. River Street, Suite 450 P.O. Box 2900 Boise, Idaho 83701 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email tom.arkoosh@arkoosh.com erin.cecil@arkoosh.com Federal Executive Agencies Peter Meier Paige Anderson Tanner Crowther U.S. Department of Energy 1000 Independence Ave., S.W. Washington, DC 20585 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email peter.meier@hq.doe.gov IDAHO POWER COMPANY’S SUPPLEMENTAL RESPONSE TO THE SIXTEENTH PRODUCTION REQUEST OF THE COMMISSION STAFF - 7 Dwight Etheridge Exeter Associates 5565 Sterrett Place, Suite 310 Columbia, MD 21044 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email detheridge@exeterassociates.com NW Energy Coalition F. Diego Rivas 1101 8th Ave Helena, MT 59601 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email diego@nwenergy.org Walmart Inc. Norman M. Semanko Parsons Behle & Latimer 800 West Main Street, Suite 1300 Boise, Idaho 83702 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email NSemanko@parsonsbehle.com Steve W. Chriss Director, Energy Services Walmart Inc. 2608 Southeast J Street Bentonville, Arkansas 72716 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email Stephen.Chriss@walmart.com Walmart Inc. Justina A. Caviglia Parsons Behle & Latimer 50 West Liberty Street, Suite 750 Reno, NV 89502 Hand Delivered U.S. Mail Overnight Mail FAX FTP Site X Email jcaviglia@parsonsbehle.com Stacy Gust Regulatory Administrative Assistant