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Home My WebLink About20081002IPC to Staff 42-63.pdfBARTON L. KLINE Lead Counsel e¡IDA~POR~ RECEiVE Pt1 ",i 56 An IDACORP Company October 1, 2008 VIA HAND DELIVERY Jean D. Jewell, Secretary Idaho Public Utilities Commission 472 West Washington Street P.O. Box 83720 Boise, Idaho 83720-0074 Re: Case No. IPC-E-08-10 General Rate Case Dear Ms. Jewell: Enclosed for filing please find an original and three (3) ,copies of Idaho Power Company's Response to the Fourth Production Request of the Commission Staff. Upon receipt of this filing, I would appreciate it if you would return a stamped copy of this letter for my file in the enclosed stamped, self-addressed envelope. Barton L. Kline Lead Counsel for Idaho Power Company BLK:csb Enclosures P.O. Box 70 (83707) 1221 W. Idaho St. Boise, ID 83702 BARTON L. KLINE, ISB #1526 LISA D. NORDSTROM, ISB #5733 DONOVAN E. WALKER, ISB #5921 Idaho Power Company P.O. Box 70 Boise, Idaho 83707 Telephone: (208) 388-2682 Facsimile: (208) 388-6936 bklineCëidahopower.com InordstromCëidahopower.com dwalkerCëidahopower.com RECEIVED'.' 2i .. . ."-ocr..1 PH 'eM 4: 56UT1L1TJE~OPU8LJC . COMMISSION Attorneys for Idaho Power Company Street Address for Express Mail: 1221 West Idaho Street Boise, Idaho 83702 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. ) ) CASE NO. IPC-E-08-10 ) ) IDAHO POWER COMPANY'S ) RESPONSE TO THE FOURTH ) PRODUCTION REQUEST OF THE ) COMMISSION STAFF TO IDAHO ) POWER COMPANY COMES NOW, Idaho Power Company ("Idaho Power" or "the Company"), and in response to the Fourth Production Request of the Commission Staff to Idaho Power Company dated September 10, 2008, herewith submits the following information: IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 1 REQUEST NO. 42: Please provide all bil frequency analyses completed or in progress for the commercial schedlJles. Please provide a description of what each analysis conveys, what biling determinant it was used for, and how it was utilized in determining the proposed rate designs. RESPONSE TO REQUEST NO. 42: Please see the tables attached hereto for the 2007 monthly bil frequency analyses for the Company's Schedule 07, Small General Service customers. This data was used to evaluate the current summer block rate and to evaluate data supporting the proposed non-summer block rate. This is the only bil frequency analysis completed for the commercial schedules. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 2 REQUEST NO. 43: With regards to the Company's witnesses Nemnich and Waites, please provide electronic copies of all analyses supporting the commercial and residential schedules rate design. Please provide a description of what each analysis conveys, what biling determinant it was used for, and how it was utilized in determining the proposed rate designs. RESPONSE TO REQUEST NO. 43: The analyses used to drive the design of the rate components proposed by the Company, for the residential and commercial schedules, have been provided in Exhibits 72 - 75 and the corresponding workpapers of witnesses Nemnich and Waites. In addition, Waites' testimony pages 5 through 18 and Nemnich's testimony pages 6 through 36 have been further described in Idaho Power's responses to Staffs production requests Nos. 42, 44, 48, 50, 56, and 57. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, and Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 3 REQUEST NO. 44: In testimony by Company witnesses Nemnich and Waites, several statements are made regarding the strength, weakness, or introductory level of price signals within rate design. In light of this, please provide electronic copies of all analyses regarding the evaluation of these signals and the impact on customer behavior (Le. load shifting, load shedding). RESPONSE TO REQUEST NO. 44: The overall goal of the Company's rate design as outlined by Mr. Gale in his testimony is to design cost-based rates that encourage increased energy effciency. When referring to "strength, weakness or introductory level," a stronger price signal is one that moves rate levels further toward this goal. For example, when pursuing a goal of encouraging energy effciency, instead of applying a uniform average percentage increase to all rate components, a stronger price signal to conserve would be one that increases one rate component by a larger percentage in order to provide customers an incentive to shift or shave energy consumption. This strategy is based on standard economic theory which holds that as prices rise, customers reduce the quantity demanded, and as prices drop, customers increase the quantity demanded. All of the Company's analyses are done with the above goal in mind. See responses to Request Nos. 43 and 45. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst and Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 4 REQUEST NO. 45: With regards to Schedule 19, has IPC analyzed the pre time-of-use biling structure in order to evaluate how the current time-of-use rate structure has influenced customer consumption behaviors, specifically, how differentials and time-of-use price signaling has impacted behavior? If so, please provide this to Staff. If not, please explain why not. (Nemnich Testimony, page 19) RESPONSE TO REQUEST NO. 45: In May 2007, Idaho Power conducted a study to examine if there was any shifting of energy usage by Schedule 19 customers between time blocks during June, July, and August as a result of implementation of time-of-use rates. The overview and findings of this study is attached hereto. Since the data set and graphs contain confidential customer information, Idaho Power is providing this information only to parties that have executed the Protective Agreement. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 5 REQUEST NO. 46: Please provide a list of all Schedule 9 customers who have moved to another Schedule (e.g. Schedule 19) since January 2005. Please provide the dates of the transfer, as well as the monthly usage for each customer. RESPONSE TO REQUEST NO. 46: Please see the table attached hereto for a list of Schedule 9 primary customers who have moved to Schedule 19 primary since January 2005. There was no movement between Schedule 9 transmission customers and Schedule 19 transmission customers, nor was there movement between Schedule 9 secondary customers and Schedule 19 secondary customers during that time. Account numbers and USA numbers have been masked. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 6 REQUEST NO. 47: When determining the demand charge differentials for Schedule 9 summer vs. non-summer customers, Company witness Nemnich says in testimony: "In order to move towards alignment with cost-of-service, my proposal is to move 25 percent closer to the cost-of-service results." When cost-of-service results show differentials between summer and non-summer demand to be 62 percent for Schedule 9 customers, how was 25 percent determined as appropriate? (Nemnich Testimony, page 22) RESPONSE TO REQUEST NO. 47: As mentioned in Nemnich's testimony, the overall goal for setting the seasonal demand charge differential was to move closer to cost of service numbers, as well as maintain the relationships among schedules and service levels. Moving 25 percent closer to the cost of service levels for this rate component was a reasonable step towards this goal, and provided some overall stabilty in the rate structure. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 7 REQUEST NO. 48: After Company witness Nemnich describes the time-of-use differentials associated with Schedule 9, she says "these are not very large but do provide an introductory level of time differentiated rates. Customers have the opportunity to become familiar with time variant pricing gradually, see how their usage patterns impact their bils, and plan accordingly." What range of customer behavior responses represents "introductory level" differentials? (Nemnich Testimony, page 26) Please provide all analyses on this "introductory level", RESPONSE TO REQUEST NO. 48: The concept of introductory levels of price signals for time-of-use rates was primarily taken from Order No. 29505, issued in May 2004. The Commission, when setting time-of-use rates for Schedule 19 customers, approved "conservative levels" of differentials and also found the differentials to be a "reasonable first step" (page 61). Differentials approved in Order No. 29505 for Schedule 19 customers are similar to those proposed by Idaho Power for Schedule 9 customers in this filing. When designing TOU rates for Schedule 9 customers, the desire is to provide a reasonable first step or "introductory" step towards providing customers time variant prices reflects hourly and daily cost changes, similar to when TOU were first implemented for Schedule 19 customers as mentioned above. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 8 REQUEST NO. 49: According to Company witness Nemnich "Idaho Power can avoid the costs of manual bil processing associated with shadow bils that occurred during the Schedule 19 time-of-use rate implementation." Please provide all the cost/benefit analyses showing how a shadow bil "phase-in" period for time-of-use rates wil add more toward administrative expenses than the benefit incrementally added? (Nemnich Testimony, page 29) RESPONSE TO REQUEST NO. 49: The additional administrative cost of providing shadow bils to Schedule 9 customers for six months is estimated to be about $100,000. The added cost results because there is no automated process to provide these bils; it is a manual process both in the metering and billng areas. While providing these shadow bils in 2004 to Schedule 19 customers, Idaho Power found there was confusion among some customers receiving two bils. And, because the bil often goes to the accounting department and not to operations personnel, the benefit of providing this information was diminished, Instead of providing shadow bils to Schedule 9 customers, Idaho Power believes this change can be better managed proactively through an education process. As stated on pages 28 and 29 of Ms. Nemnich's testimony; the Company: . , . propose(s) implementing a customer communication and education plan that provides customers with information on the possible impact of time-of-use rates on their bils, Examples of energy conservation or load shifting ideas may be also provided at that time. By working with customers before the rates go into effect, they can plan and make purchasing decisions and determine how best to react to the new structure. In turn, by providing customer support up front, Idaho Power can avoid the costs of manual bil processing associated with shadow bils that IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 9 occurred during the Schedule 19 time-of-use rate implementation. The Company believes there may be benefi to providing this information comprehensively with a look over the previous year's usage pattern instead of month to month. In this process, the hope is to manage the expectations of customers so they may better understand the potential impact of time-of-use rates on their bils and operate accordingly. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 10 REQUEST NO. 50: When asked if Company witness Nemnich thought the Schedule 9 and Schedule 19 rate components and differentials were reasonable, she replied "I reviewed time-of-use rate structures of the other utilities and found that a total overall differential of 46 percent is within a typical range." What other utilities' time-of- use rate structures were examined and how was reasonableness assessed? (Nemnich Testimony, page 34) RESPONSE TO REQUEST NO. 50: Following is a table showing a list of utilities and their time-of-use tariffs with estimates of the On-Peak to Off-Peak Energy Charge differentials that were reviewed. This table shows that the On-Peak to Off-Peak differential of 46 percent, proposed by Idaho Power, for Schedule 19 TOU rates is within a range established and used by other electric utilities. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company, IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 11 REQUEST NO. 51: Please provide all the analyses done in determining how the "Energy Watch Event" rate has affected demand and how IPC arrives at the differential between the event rate and base rate? (Waites Testimony, page 13) RESPONSE TO REQUEST NO. 51: Analyses done in determining how the "Energy Watch Event" rate have affected demand can be found in the Company's Energy Watch and Time-of-Day Annual Reports filed with the Commission for the years 2005 and 2006. In the 2005 report, please refer to pages 3-4 for a summary of the program results and pages 19-36 for detailed results. In the 2006 report, a sumrrary can be found on pages 3-5 and detailed program results are on pages 17-33. When the event rate and the base rate differentials were first established, a number of factors were considered. The Company's goal was to find the lowest possible rate to accomplish price elasticity. The Company used information gathered from customer focus groups held for our Emmett valley customers. Through these groups, we learned customers wanted to see savings of at least $10 per month to participate in a program. In addition, the Company's consultant, RLW, referenced a successful critical peak pricing program run by Ameren in which their customers paid a critical peak price of 301f per kWh. In Ameren's critical peak pricing pilot, they combined critical peak pricing and time-of-use pricing. Their critical peak price of 301f per kWh was approximately four times the summer mid-peak price. As a result, the Company found that a rate of 201f per kWh, or about four times the base rate, was a reasonable event rate, Based on the demand reductions seen during the pilot program, the Company has kept the event rate at the 201f per kWh since the beginning of the program. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 12 However, as the base rate has increased over the last few years and is proposed to increase in 2009, we felt it was reasonable to increase the event rate to 221f per kWh for two reasons: (1) to attempt to keep the differential between the base rate and the event rate originally established and (2) to maintain the demand reductions resulting from participating customers' actions. The response to this Request was prepared by Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY -13 REQUEST NO. 52: Why was 60 percent of the average 2007 residential customer energy usage used as the benchmark for designing the first block? (Waites Testimony, page 10) RESPONSE TO REQUEST NO. 52: Setting the first block of energy at 60 percent of the average 2007 residential customer energy usage, or 600 kWh, was an attempt to give all customers an incentive to conserve while also allowing for a larger percentage of basic electric usage (energy usage from lighting, a refrigerator, electric range, electric oven, a microwave, and a water heater) to be priced at a lower rate. This level aligned with the basic electric usage studies performed by the Department of Energy and the U.S. Department of Housing and Urban Development, whose results are provided in Ms Waites' workpapers. A block of 600 kWh fell within the estimated baseline load for residential customers while stil providing an incentive for conservation. The response to this Request was prepared by Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 14 REQUEST NO. 53: Why was only 2007 used in estimating customer energy usage? Why wasn't a trend developed to forecast usage? If so, why wasn't an average used? (Waites Testimony, page 10) RESPONSE TO REQUEST NO. 53: As part of year end reporting processes, the Company computes the average monthly normalized energy use for residential customers. For the years 2003 through 2005, there was very little change in the average monthly usage, But in the 2006 calculation there was a slight increase in the monthly usage which appeared to be an anomaly. When we found the same increase in the 2007 normalized energy use, the Company performed bil frequency analyses on the 2007 energy usage to more accurately reflect the current snapshot and the best representation of residential customers' current energy usage. While it is true that energy usage may trend one way or another, change in the residential customer's usage in the past has been small and therefore not useful as a benchmark for establishing customers' average energy usage. The response to this Request was prepared by Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company, IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 15 REQUEST NO. 54: Please provide monthly customer counts and loads used to determine that average residential baseline usage was 806 kWh and 838 kWh. Please provide more detail on how May and October 2007 was selected and describe how daily usage was normalized. Were different geographic regions considered (e.g. McCall vs. Boise)? (Waites Testimony, page 10) RESPONSE TO REQUEST NO. 54: The estimated baseline usage of 806 kWh and 838 kWh was calculated based on bil frequency analyses for May and October 2007, which provided the total number of customer bils and total kWhs. For May 2007, there were 390,295 total bils and 314,733,949 total kWhs for an average of 806 kWh per bilL. For October 2007, there were 393,585 total bils and 329,937,115 total kWhs for an average of 838 kWh's per bilL. Both May and October 2007 were selected as months to use to estimate baseline usage because it would be reasonable to assume that neither an air conditioner nor a heater would be running, or, if running, would have minimal usage. Daily usage was not normalized to estimate baseline usage nor were different geographic regions considered. The bil frequency analyses performed were by rate class as a way to gather a reasonable estimate of baseline usage. The response to this Request was prepared by Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 16 REQUEST NO. 55: In regards to the Schedule 19 billng structure, why has IPC decided to change the differentials between Off-Peak, Mid-Peak, and On-Peak during the summer and the differential between Off-Peak and Mid-Peak Energy Charges during non-summer season? How has IPC determined the differentials? (Nemnich Testimony, pages 30-31) RESPONSE TO REQUEST NO. 55: With respect to why Idaho Power proposed to increase Schedule 19 differentials, please see page 35 of Nemnich's testimony. The overall rate design objectives also apply as described on pages 3 and 4 of Nemnich's testimony. The process that Idaho Power used to derive Schedule 19 TOU differentials is found on pages 33 and 34 of Nemnich's testimony. The response to this Request was prepared by, Darlene Nerrnich, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY -17 REQUEST NO. 56: When calculating new Off-Peak Energy Charges for the Schedule 9 summer and non-summer seasons, why were the current rates "increased by approximately 7.5 percent"? Why does Nemnich go on to say "This is approximately half of the total overall increase of 15 percent for Schedule 19 customers"? Why doesn't Off-Peak represent a smaller portion of the relative total Schedule 19 increase to convey a price signal of conservation? Please provide all analysis on this. (Nemnich Testimony, page 34) RESPONSE TO REQUEST NO. 56: The intent of increasing the Off-Peak rate only 7.5 percent was to keep the rate low in order to encourage customers to shift energy from On-Peak time block to the Off-Peak time block. Of all Schedule 19 proposed rate components, the Off-Peak Energy Charge has the smallest increase over current rates, well below the cost of service revenue requirement of 15 percent. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 18 REQUEST NO. 57: When calculating the new Schedule 19 Mid-Peak Energy Charges in an "iterative process" resulting in new differentials, what "iterative process" was used? (Nemnich Testimony, page 34) RESPONSE TO REQUEST NO. 57: After the new Service, Basic, Demand, and On-Peak Demand are initially set based on overall rate design goals, these charges are multiplied by test year billng units to determine overall impact on revenue requirement targets. The remaining revenue requirement shortall is split up between the On-Peak, Mid-Peak, and Off-Peak time blocks for both seasons in an iterative process focusing on the rate design goals for these Energy Charges. The iterative process referred to here is simply adjusting the specific energy charges until the revenue requirement for that customer class is met. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 19 REQUEST NO. 58: When calculating the new Schedule 19 Mid-Peak Energy Charges in an "iterative process" resulting in new differentials, what "iterative process" was used? (Nemnich Testimony, page 34) RESPONSE TO REQUEST NO. 58: Please see Response to Request No. 57. The response to this Request was prepared by Darlene Nemnich, Senior Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 20 REQUEST NO. 59: Did the Company consider other possible rate tiers for the residential customers beyond those proposed in this filing? If so, what alternatives were considered? Why was a two-tier system selected over, for example, a three-tier rate structure? RESPONSE TO REQUEST NO. 59: When considering possible rate tiers, the Company reviewed the rate design of other utilities across the nation who offered a tiered rate structure to residential customers. The Company discovered a number of two-tier and three-tier rate structures as well as the block levels for the tiers (see attached worksheet). Research indicated a two-tiered rate structure was most common for utilities in the Pacific Northwest area. In addition, at the time of the research, Rocky Mountain Power had an active filing with the Utah Public Service Commission requesting to move from a three-tiered structure to a two-tiered structure. Rocky Mountain Power conducted studies to assess customers' understanding of their residential rates. Their conclusion was that their three-tier rate structure was not understood by customers and had a significant impact on consumption decisions. Because of this, Rocky Mountain Power proposed to simplify their rate structure by eliminating one of the three blocks. Idaho Power also experienced customer dissatisfaction with three-tier rates that were implemented in 2001. As a result, the Company recommends continuance of the current two-tier structure, A two-tier rate structure is a design that is familiar and easier to understand for customers yet is also an effective way to send a clear price signaL. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 21 The response to this Request was prepared by Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 22 REQUEST NO. 60: On page 2 of Company witness Waites' testimony, the proposed rate design for residential customers is "both cost-based and encourages increased energy efficiency." Please explain how the two-tier rate structure, with summer and non-summer differentials, adheres to the 'cost-based' criteria. Specifically, what resources (costs) are associated with the first rate block (up to 600 kWh) and what resources are associated with the second block? RESPONSE TO REQUEST NO. 60: As can be seen in the residential class cost-of-service study results, Mr. Tatum's Exhibit No. 67 page 1 of 6, line 60, columns (G) and (H), the unit cost of energy for the residential class is approximately 27 percent higher in the summer months than it is in the non-summer months, supporting the proposed seasonalized rates. The unit cost results detailed on Exhibit No. 67 were produced under the 3CP/12CP cost-of-service study. On pages 19 through 24 of his testimony, Mr. Tatum describes the 3CP/12CP cost-of-service methodology and how it was applied to allocate the fixed costs associated with each of the Company's generation resources, The allocation factors that drive the seasonalization of the fixed generation costs under the 3CP/12CP method can be found on Exhibit No. 68, pages 1 and 2 of 6. The two-tier rate structure reflects the fact that marginal energy costs exceed embedded costs and is intended to send that price signal on to customers. The response to this Request was prepared by Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 23 REQUEST NO. 61: Please provide an analysis demonstrating that the cost to provide the first 600 kWh of energy to residential Schedule 1 customers is higher in the summer than non-summer months. Specifically address the embedded resources for each season. RESPONSE TO REQUEST NO. 61: Please refer to Idaho Power's response to Staffs production request No. 60 for an explanation of the factors that drive seasonalized rates. The response to this Request was prepared by Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 24 REQUEST NO. 62: What effect on residential energy consumption does the Company expect from implementation of its Tiered Rate Proposal? Please provide any analysis used to support that expectation. RESPONSE TO REQUEST NO. 62: The Company did not incorporate any possible price elasticity into our studies or analyses as a result of the tiered rate proposals. The response to this Request was prepared by Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company. IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 25 REQUEST NO. 63: Please provide an analysis for the residential customer classes that show the percentage of fixed costs included in energy rates by proposed rate block for both summer and non-summer months. Does the Company believe that the proposed changes to rate design wil affect the recovery of fixed costs during the remainder of the FCA pilot program? Why or why not? RESPONSE TO REQUEST NO. 63: The only analysis performed regarding the portion of the fixed costs included in the energy rates can be found on Mr. Tatum's Exhibit No. 71 page 3 of 3, column (L). This calculation is the derivation of the portion of the residential energy rate that recovers fixed costs. The Company has not performed an analysis on the impact of the proposed rate design on the FCA. The response to this Request was prepared by Courtney Waites, Pricing Analyst, Idaho Power Company, in consultation with Barton L. Kline, Lead Counsel, Idaho Power Company.s. Ö~ DATED at Boise, Idaho, this L day of ~ 2008. C,~ BARTO~ L. KLINE Attorney for Idaho Power Company LISA D. NORDSTROM Attorney for Idaho Power Company DONOVAN E. WALKER Attorney for Idaho Power Company IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 26 CERTIFICATE OF SERVICE I HEREBY CERTIFY that on this I si day of ~008 I served a true and correct copy of IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH 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 Weldon B. Stutzman Deputy Attorney General Idaho Public Utilities Commission 472 West Washington P.O. Box 83720 Boise, Idaho 83720-0074 Neil Price Deputy Attorney General Idaho Public Utilities Commission 472 West Washington P.O. Box 83720 Boise, Idaho 83720-0074 Industrial Customers of Idaho Power Peter J. Richardson, Esq. RICHARDSON & O'LEARY PLLC 515 North 27th Street P.O. Box 7218 Boise, Idaho 83702 Dr. Don Reading Ben Johnson Associates 6070 Hil Road Boise, Idaho 83703 Idaho Irrigation Pumpers Association, Inc. Randall C. Budge Eric L. Olsen RACINE, OLSON, NYE, BUDGE & BAILEY, CHARTERED P.O. Box 1391 201 East Center Pocatello, Idaho 83204-1391 -lHand Delivered U.S. Mail _ Overnight Mail FAX -X Email Weldon.stutzmanCëpuc.idaho.gov -l Hand Delivered U.S. Mail _ Overnight Mail FAX -X Email Neil.pricetâpuc.idaho.gov Hand Delivered -lU.S. Mail _ Overnight Mail FAX -X Email petertârichardsonandoleary.com Hand Delivered -lU.S. Mail _ Overnight Mail FAX -X Email dreadingtâmindspring.com Hand Delivered -lU.S. Mail _ Overnight Mail FAX -X Email rcbtâracinelaw.net elotâracinelaw.net IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 27 Anthony Yankel Yankel & Associates, Inc. 29814 Lake Road Bay Vilage, Ohio 44140 Kroger Co. I Fred Meyer and Smiths Michael L. Kurt Kurt J. Boehm BOEHM, KURTZ & LOWRY 36 East Seventh Street, Suite 1510 Cincinnati, Ohio 45202 The Kroger Co. Attn: Corporate Energy Manager (G09) 1014 Vine Street Cincinnati, Ohio 45202 Kevin Higgins Energy Strategies, LLC Parkside Towers 215 South State Street, Suite 200 Salt Lake City, Utah 84111 Micron Technology Conley Ward Michael C. Creamer GIVENS PURSLEY, LLP 601 West Bannock Street P,O. Box 2720 Boise, Idaho 83701-2720 Dennis E. Peseau, Ph.D. Utility Resources, Inc. 1500 Liberty Street SE, Suite 250 Salem, Oregon 97302 Hand Delivered -2U.S. Mail _ Overnight Mail FAX .. Email tonyCëyankel.net Hand Delivered -2U.S. Mail _ Overnight Mail FAX .. Email mkurtcæBKLlawfrm.com kboehmcæBKLlawfrm.com Hand Delivered -2U.S. Mail _ Overnight Mail FAX Email Hand Delivered -2U.S. Mail _ Overnight Mail FAX -l Email khigginsCëenergystrat.com Hand Delivered -2U.S. Mail _ Overnight Mail FAX .l Email cewcægivenspursley.com mcccægivenspursley.com Hand Delivered -2U,S. Mail _ Overnight Mail FAX -2 Email dennytempcæyahoo.com IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY - 28 Department of Energy Lot R. Cooke Arthur Perry Bruder Offce of the General Counsel United States Department of Energy 1000 Independence Avenue SW Washington, DC 20585 Routing Symbol GC-76 Dwight D. Etheridge Exeter Associates, Inc. 5565 Sterrett Place, Suite 310 Columbia, MD 21044 Community Action Partnership Association Of Idaho Brad M. Purdy Attorney at Law 2019 North 1ih Street Boise, Idaho 83702 Snake River Allance Ken Miler Snake River Allance P.O. Box 1731 Boise, Idaho 83701 Hand Delivered U.S. Mail -2 Overnight Mail FAX -2 Email Lot.CooketChg.doe.gov Arthur.BrudertChg.doe.gov Hand Delivered -l U.S. Mail _ Overnight Mail FAX -l Email detheridgetCexeterassociates.com Hand Delivered -l U.S. Mail _ Overnight Mail FAX -l Email bmpurdytChotmail.com Hand Delivered -l U.S. Mail _ Overnight Mail FAX -l Email kmilertCsnakeriverallance.org ~'~ IDAHO POWER COMPANY'S RESPONSE TO THE FOURTH PRODUCTION REQUEST OF THE COMMISSION STAFF TO IDAHO POWER COMPANY ~ 29 BEFORE THE IDAHO PUBLIC UTiliTIES COMMISSION CASE NO. IPC-E-08-10 IDAHO POWER COMPANY RESPONSE TO STAFF'S PRODUCTION REQUEST NO. 42 "Rates: 107 107B 184C for January 2007 " KWH Blocks Bils in Block KW in Block KW Biled in Block none 1 0 0 .00 100.00 8163 2435552 180952 100.00 150,00 1488 1089818 185718 150,00 200,00 1262 1021940 221440 200,00 250,00 1065 962960 239410 250.00 300,00 975 912868 268818 300,00 350,00 933 863591 302341 350,00 400.00 912 818886 342536 400,00 450,00 844 774336 358586 450,00 500,00 890 732078 423728 500.00 550,00 826 688656 434106 550.00 600,00 778 648935 448185 600,00 700,00 1451 1184781 943181 700,00 800.00 1259 1048873 943873 800.00 1000,00 2247 1742558 2016958 1000.00 1200,00 1899 1327753 2083353 1200,00 1400.00 1508 985392 1953192 1400,00 1600,00 1187 724003 1781403 1600,00 1800,00 852 515980 1445180 1800,00 2000,00 626 367801 1185801 2000,00 99999999999,99 1544 1674683 4762683 Company Totals:30710 20521444 20521444 "Rates: 107 107B 184C for February 2007 " KWH Blocks Bils in Block KW in Block KW Biled in Block none 1 0 0 .00 100,00 8538 2399555 190155 100,00 150,00 1517 1066679 189529 150.00 200.00 1278 997425 224175 200,00 250,00 1087 938533 245333 250.00 300,00 1019 885668 280768 300.00 350,00 919 836940 298940 350.00 400.00 961 789874 360574 400,00 450,00 913 743478 388678 450,00 500,00 881 698233 418733 500,00 550,00 836 655557 439407 550,00 600,00 838 613538 482188 600,00 700.00 1465 1111851 952851 700.00 800.00 1413 967395 1059795 800,00 1000,00 2101 1582548 1890148 1000,00 1200,00 1873 1182476 2056876 1200,00 1400,00 1457 850056 1891256 1400,00 1600,00 1092 589687 1629687 1600.00 1800.00 770 409333 1306533 1800.00 2000.00 513 281808 973008 2000,00 99999999999,99 1161 1182843 3504843 Company Totals:30633 18783477 18783477 "Rates: 107 107B 184C for March 2007 " KW Blocks Bils in Block KW in Block KW Biled in Block none 1 0 0 ,00 100,00 9241 2355828 219628 100.00 150.00 1598 1027345 198945 150,00 200,00 1434 952120 250720 200,00 250.00 1164 888153 262653 250.00 300.00 1096 831685 302185 300,00 350,00 1045 777741 339991 350.00 400,00 1054 726921 397271 400.00 450,00 980 674234 416684 450,00 500.00 948 626129 450579 500.00 550,00 909 579321 477121 550.00 600,00 822 536191 472691 600,00 700,00 1539 953523 999623 700,00 800.00 1225 816183 918883 800,00 1000,00 2250 1277273 2017673 1000,00 1200.00 1892 866811 2077611 1200,00 1400.00 1301 549257 1689457 1400,00 1600.00 916 323686 1368286 1600.00 1800.00 500 184757 846957 1800,00 2000,00 262 109667 495867 2000.0099999999999,99 427 404482 1258482 Company Totals:30604 15461307 15461307 "Rates: 107 107B 184C for April 2007 " KW Blocks Bils in Block KW in Block KW Biled in Block none 1 0 0 .00 100.00 9481 2333991 245991 100.00 150,00 1901 995438 236588 150,00 200,00 1554 910437 272287 200.00 250,00 1318 838582 296832 250.00 300.00 1171 775509 321459 300,00 350,00 1149 717916 373266 350,00 400,00 1096 662531 411581 400,00 450,00 1022 609379 434729 450,00 500,00 999 558597 474647 500,00 550,00 979 509514 514464 550.00 600.00 849 463915 488765 600,00 700.00 1408 813068 914468 700,00 800,00 1303 676187 975187 800,00 1000,00 2096 1007378 1877178 1000,00 1200,00 1605 637712 1756712 1200,00 1400,00 1076 369648 1390048 1400,00 1600,00 623 201566 927566 1600.00 1800,00 347 106907 585307 1800,00 2000,00 141 60172 265372 2000,0099999999999.99 243 517382 1003382 Company Totals:30362 13765829 13765829 "Rates: 107 107B 184C for May 2007 " KWH Blocks Bils in Block KW in Block KW Biled in Block none 1 0 0 .00 100,00 9677 2349861 273861 100,00 150,00 1965 988286 245036 150,00 200,00 1762 896212 308862 200.00 250.00 1486 815334 335184 250.00 300,00 1336 744419 367869 300,00 350.00 1244 679217 404067 350,00 400,00 1110 620878 416528 400,00 450,00 1075 566019 456919 450,00 500.00 1031 512828 489228 500,00 550,00 973 462757 510357 550,00 600,00 797 419627 458927 600,00 700.00 1393 728748 905748 700.00 800,00 1245 595175 932375 800.00 1000.00 1890 869627 1691027 1000,00 1200.00 1386 544159 1516759 1200.00 1400.00 905 316400 1170000 1400.00 1600,00 556 173214 830414 1600,00 1800,00 264 91759 445759 1800,00 2000,00 123 54340 231940 2000.0099999999999,99 219 283955 721955 Company Totals:30438 12712815 12712815 "Rates: 107 107B 184C for June 2007 " KW Blocks Bils in Block KWH in Block KW Biled in Block none 1 0 0 ,00 100,00 9440 2368769 268869 100.00 150.00 1931 1000857 240557 150,00 200.00 1716 909749 299549 200,00 250,00 1473 830800 331450 250,00 300.00 1358 760103 373553 300,00 350.00 1160 697623 377573 350,00 400,00 1132 640279 425029 400.00 450,00 1033 585819 439219 450.00 500.00 888 538290 422490 500,00 550,00 845 494686 444036 550.00 600,00 830 452719 477569 600.00 700,00 1405 794324 914524 700,00 800.00 1212 660809 907609 800.00 1000,00 1848 1014076 1658876 1000,00 1200,00 1311 699725 1439325 1200,00 1400.00 1021 463934 1321934 1400.00 1600,00 733 291047 1096647 1600.00 1800.00 431 174158 729358 1800,00 2000,00 264 104736 498336 2000,00 99999999999.99 408 640077 1456077 Company Totals:30440 14122580 14122580 Rates: 107 107B 184C for July 2007 " KW Blocks none .00 100,00 100,00 150,00 150,00 200,00 200,00 250,00 250.00 300,00 300,00 350.00 350.00 400,00 400,00 450,00 450.00 500,00 500.00 550,00 550,00 600,00 600,00 700,00 700,00 800,00 800,00 1000,00 1000,00 1200,00 1200.00 1400.00 1400,00 1600,00 1600,00 1800,00 1800.00 2000,00 2000.0099999999999,99 Company Totals: Bils in Block KW in Block KW Biled in Block 1 9456 1891 1631 1327 1258 1079 997 956 856 758 702 1299 1078 1760 1396 1102 854 683 423 1085 30592 o 2375714 1007251 922239 847543 783177 724290 673471 623369 577820 538450 501770 903055 781675 1280051 966569 714499 522988 367993 256471 1063034 16431429 o 262214 234151 286239 298643 346277 350540 374821 405969 406020 398350 403870 844355 805975 1579451 1533169 1427899 1280388 1159193 800871 3233034 16431429 Rates: 107 107B 184C for August 2007 " KWH Blocks none .00 100,00 100,00 150,00 150.00 200,00 200,00 250.00 250,00 300,00 300.00 350,00 350.00 400.00 400.00 450,00 450,00 500,00 500,00 550.00 550,00 600,00 600.00 700,00 700.00 800,00 800.00 1000,00 1000.00 1200,00 1200.00 1400,00 1400.00 1600,00 1600,00 1800.00 1800,00 2000.00 2000,0099999999999,99 Company Totals: Bils in Block KW in Block KWH Biled in Block 1 9354 1842 1628 1302 1190 1075 984 917 855 781 699 1236 995 1758 1387 1097 878 710 573 1219 30481 o 2362370 1009021 923679 849373 787616 731484 681307 632955 588386 547565 510536 921445 809898 1345314 1028837 784920 586700 425353 299186 793386 16619331 o 249770 229021 285079 292073 326916 349534 370457 390355 406486 410465 402336 801345 744198 1578914 1520437 1425320 1315500 1202953 1086786 3231386 16619331 Rates: 107 107B 184C for September 2007 " KW Blocks none ,00 100,00 100.00 150.00 150,00 200.00 200.00 250.00 250,00 300,00 300,00 350,00 350.00 400,00 400.00 450,00 450.00 500,00 500.00 550,00 550,00 600.00 600,00 700.00 700,00 800.00 800,00 1000,00 1000,00 1200,00 1200,00 1400,00 1400.00 1600,00 1600.00 1800,00 1800,00 2000,00 2000,0099999999999.99 Company Totals: Bills in Block KWH in Block KW Biled in Block 1 9534 1896 1664 1386 1208 1170 1042 981 872 817 760 1266 1089 1836 1411 1164 824 586 370 600 30477 o 2358028 999856 910579 834208 769102 709541 655395 604753 557571 516228 476590 849001 732278 1167502 846949 588958 390610 249672 153822 798707 15169350 o 263828 237156 291079 311608 331702 379641 391295 417403 413821 429428 437290 820601 815478 1645302 1549149 1509758 1233010 993272 699822 1998707 15169350 "Rates: 107 107B 184C for October 2007 " KWH Blocks Bils in Block KWH in Block KWH Biled in Block none 1 0 0 ,00 100.00 9678 2337540 270740 100,00 150,00 1994 982516 248216 150,00 200,00 1716 890788 300288 200,00 250.00 1396 813135 314235 250.00 300.00 1298 745206 356506 300.00 350.00 1270 681730 413030 350.00 400,00 1079 622566 404466 400,00 450,00 1066 569307 453257 450,00 500,00 948 518963 450513 500,00 550,00 929 472359 488259 550.00 600,00 875 426307 502707 600,00 700,00 1456 735141 944641 700,00 800,00 1168 603298 873598 800.00 1000,00 1857 902548 1664948 1000,00 1200.00 1418 577387 1555787 1200,00 1400.00 902 343849 1167049 1400,00 1600.00 559 195997 831197 1600,00 1800.00 273 116748 460748 1800,00 2000,00 146 76832 276032 2000.0099999999999,99 318 654037 1290037 Company Totals:30347 13266254 13266254 II Rates: 107 107B 184C for November 2007 II KW Blocks Bils in Block KW in Block KW Biled in Block none 1 0 0 ,00 100.00 9735 2318109 250309 100,00 150,00 1924 984118 238818 150,00 200,00 1607 897659 281359 200.00 250,00 1373 824171 310071 250.00 300,00 1239 758410 341410 300,00 350.00 1057 699718 342918 350,00 400.00 1095 646902 411002 400,00 450,00 1006 593569 427119 450,00 500.00 928 545909 441059 500,00 550,00 887 500354 465754 550.00 600,00 874 456590 502890 600,00 700,00 1449 794055 939555 700,00 800,00 1269 658495 949795 800,00 1000,00 1995 987487 1788487 1000.00 1200.00 1498 639777 1642377 1200.00 1400.00 1030 389083 1335683 1400.00 1600.00 588 227789 879189 1600,00 1800,00 309 137932 522332 1800,00 2000,00 154 93106 291106 2000,0099999999999.99 396 935489 1727489 Company Totals:30414 14088722 14088722 II Rates: 107 107B 184C for December 2007 II KWH Blocks Bils in Block KW in Block KW Biled in Block none 1 0 0 ,00 100.00 8997 2366203 211903 100,00 150.00 1598 1036429 198979 150,00 200,00 1328 964524 232874 200,00 250.00 1153 902134 259534 250,00 300,00 1118 845420 307620 300.00 350.00 1029 792222 335072 350,00 400,00 990 741376 371526 400.00 450.00 940 693258 399908 450,00 500,00 933 645631 442781 500,00 550.00 799 603453 420203 550.00 600,00 846 562171 487021 600,00 700.00 1494 1007088 971988 700,00 800,00 1259 870919 946619 800.00 1000.00 2238 1383081 2009881 1000.00 1200,00 1762 982657 1933457 1200,00 1400,00 1315 677570 1707370 1400.00 1600.00 962 449065 1440065 1600,00 1800,00 669 284874 1133274 1800.00 2000,00 347 184097 656097 2000.0099999999999,99 763 1147256 2673256 Company Totals:30541 17139428 17139428 BEFORE THE IDAHO PUBLIC UTiliTIES COMMISSION CASE NO. IPC-E-08-10 IDAHO POWER COMPANY RESPONSE TO STAFF'S PRODUCTION REQUEST NO. 45 An IOACORP company DATE: May 21,2007 MEMO TO: Maggie Brilz FROM: Courtney Waites cc: SUBJECT: Time-of-Use analysis for Idaho Power's Schedule 19 customers In Order No, 29505 dated May 25, 2004, the Idaho Public Utilities Commission (I PUC) approved Idaho Power's request to implement mandatory time-of-use rates (TOU) for Schedule 19 customers, The rates include on-peak, mid-peak, and off-peak energy prices to be in effect during June, July and August. During the other nine months, mid-peak and off-peak energy rates are in effect. The intent of this rate design is to more closely align prices with costs and thus provide the economic signal that energy is more costly during both the peak hours of the day and the peak months of the year. In May, 2007, an analysis was completed to evaluate any impact of the implementation of TOU pricing for Idaho Power's Schedule 19 customers, Described below is a summary of the analysis. Time-of-Use Analvsis The purpose of the analysis was to evaluate what impact, if any, TOU rates may have had on customers' usage patterns during our high demand periods of June, July and August. Hourly data was retrieved for all Schedule 19 customers during these months in the years 2004, 2005, and 2006, This data was then grouped by on-peak, mid-peak, and off-peak hours separately for each year and for each customer. Once the data was grouped, the customers were then sorted into seven customer categories: manufacturing, food processing, education, city/county/state, medical, offce building, and other, The categories were created to lump customers with similar end-use energy usage together for comparison. The data for these seven customer classes within Schedule 19 was then graphed, comparing the percent of energy consumed during each of the TOU periods in 2004, 2005, and 2006, Separately, all the Schedule 19 customers were sorted by total energy consumed and a line graph was prepared for each of the top five customers, comparing their energy use for each of the three years, Findings When looking at the data groups described above, the following two conclusions can be made: 1) almost all customers use the majority of their energy during the mid-peak hours, the least during the on- peak-hours, and the off peak hour usage falls in between, and 2) customer usage patterns do not appear to be influenced by TOU rates, The only customer category that varies slightly from the trend is the offce building category; those customers consume the most energy during the mid-peak hours like the rest, but the least energy is consumed during the off-peak hours. The TOU rates were phased-in in 2004 at the direction of the Commission. Between June 1 and December 1, 2004 Schedule 19 customers were given two bils: the actual bil to be paid and a second bil showing the charges had the TOU rates been in effect. Actual bils began reflecting the TOU rates effective December 1, 2004. The goal was to give customers time to prepare to operate cost-effectively under the new rates, However, over the course of the three years, Schedule 19 customers showed no noticeable shifting of energy use between the on-peak, mid-peak, and off-peak hours, Recommendations In its Order, the Commission recommended establishing the summer peak energy differentials conservatively because this was the first time the Company had implemented mandatory TOU rates, It is possible that because the differentials are on the conservative side, no incentive for load shifting is provided, However, it is important to note some rate activities during the course of the TOU rates, During this time, we came off of six consecutive bad water years for one good water year resulting in a PCA credit for customers rather than a charge and we had a small base rate increase. In light of the various rate activities during this time, it is diffcult to determine any definitive conclusions from the usage patterns. It is my recommendation we continue to analyze TOU pricing as we are implementing additional rate activities which may incent customers to shift energy usage, The Company wil continue to send price signals as a more appropriate cost recovery mechanism, BEFORE THE IDAHO PUBLIC UTiliTIES COMMISSION CASE NO. IPC-E-08-10 IDAHO POWER COMPANY RESPONSE TO STAFF'S PRODUCTION REQUEST NO. 46 9/22/2008 Idaho Power Company 1:30:28 PM IPUC 46 Part B v2 in Crystal Enterprise datat Warehouse adhoc ACCOUNTID USAID RATE USAGEMO USAGE QTY USAGE UOM 1 a 109P 1/1/2005 164820 KW 109P 2/1/2005 168706 KW 109P 3/1/2005 183351 KW 109P 4/1/2005 181365 KW b 119P 5/1/2005 179684 KW 119P 6/1/2005 136662 KWH 119P 7/1/2005 119661 KW 119P 8/1/2005 265047 KW 119P 9/1/2005 164374 KW 119P 10/1/2005 190927 KW 119P 11/1/2005 207046 KW 119P 12/1/2005 163981 KW 119P 1/1/2006 147575 KW 119P 2/1/2006 148137 KW 119P 3/1/2006 160580 KWH 119P 4/1/2006 198536 KW 119P 5/1/2006 176944 KW 119P 6/1/2006 178222 KW 119P 7/1/2006 121685 KW 119P 8/1/2006 240687 KWH 119P 9/1/2006 174723 KWH 119P 10/1/2006 245641 KWH 119P 11/1/2006 184589 KW 119P 12/1/2006 158940 KW 119P 1/1/2007 162706 KW 119P 2/1/2007 149709 KW 119P 3/1/2007 191099 KW 119P 4/1/2007 229092 KW 119P 5/1/2007 181542 KW 119P 6/1/2007 180079 KW 119P 7/1/2007 143527 KW 119P 8/1/2007 364762 KWH 119P 9/1/2007 221512 KWH 119P 10/1/2007 214252 KWH 119P 11/1/2007 233295 KW 119P 12/1/2007 168934 KWH 119P 1/1/2008 186696 KW 119P 2/1/2008 169782 KW 119P 3/1/2008 223218 KW 119P 4/1/2008 203269 KWH 119P 5/1/2008 221369 KW 119P 6/1/2008 219698 KW 119P 7/1/2008 136790 KW 119P 8/1/2008 323564 KW 119P 9/1/2008 217227 KW 2 c 109P 1/1/2005 157012 KWH 109P 2/1/2005 248085 KWH 109P 3/1/2005 190751 KWH 109P 4/1/2005 204118 KW 109P 5/1/2005 172181 KW 109P 6/1/2005 86073 KW 109P 7/1/2005 137522 KWH 109P 8/1/2005 205764 KWH 109P 9/1/2005 189841 KW 109P 10/1/2005 191355 KWH 109P 11/1/2005 197502 KW 109P 12/1/2005 178723 KWH d 119P 1/1/2006 222137 KW 119P 2/1/2006 136156 KW 119P 3/1/2006 273384 KW 119P 4/1/2006 299240 KW 119P 5/1/2006 172179 KW 119P 6/1/2006 223499 KW 119P 7/1/2006 256916 KW 119P 8/1/2006 231919 KW 119P 9/1/2006 291953 KW 119P 10/1/2006 244915 KWH 119P 11/1/2006 300942 KW 119P 12/1/2006 301154 KW 119P 1/1/2007 258789 KW 119P 2/1/2007 345157 KWH 119P 3/1/2007 333247 KW 119P 4/1/2007 277847 KW 119P 5/1/2007 299008 KWH 119P 6/1/2007 322212 KWH 119P 7/1/2007 187635 KW 119P 8/1/2007 303365 KW 119P 9/1/2007 272936 KW 119P 10/1/2007 249545 KW 119P 11/1/2007 298518 KW 119P 12/1/2007 255883 KW 119P 1/1/2008 280706 KW 119P 2/1/2008 366941 KW 119P 3/1/2008 338220 KWH 119P 4/1/2008 376222 KWH 119P 5/1/2008 426847 KWH 119P 6/1/2008 379426 KWH 119P 7/1/2008 375622 KWH 119P 8/1/2008 350836 KW 119P 9/1/2008 220580 KWH 3 e 449865 462780 334314 KWH KWH KWH 109P 109P 109P 1/1/2005 2/1/2005 3/1/2005 109P 4/1/2005 324562 KWH 109P 5/1/2005 243365 KWH 109P 6/1/2005 249048 KW 109P 7/1/2005 343113 KW 109P 8/1/2005 344319 KW 109P 9/1/2005 292988 KW 109P 10/1/2005 269129 KW 109P 11/1/2005 280591 KW 109P 12/1/2005 469560 KW 109P 1/1/2006 439593 KW 109P 2/1/2006 389154 KW 109P 3/1/2006 395985 KW 109P 4/1/2006 315805 KW f 119P 5/1/2006 115227 KW 119P 6/1/2006 277695 KW 119P 7/1/2006 318953 KW 119P 8/1/2006 372413 KW 119P 9/1/2006 454181 KW 4 9 119P 11/1/2005 413635 KW 119P 12/1/2005 409151 KWH 119P 1/1/2006 452126 KWH 119P 2/1/2006 189381 KWH 119P 3/1/2006 375126 KWH 119P 4/1/2006 419267 KWH 119P 5/1/2006 425138 KWH 119P 6/1/2006 478126 KW 119P 7/1/2006 498481 KW 119P 8/1/2006 584995 KWH 119P 9/1/2006 544508 KWH 119P 10/1/2006 475277 KWH h 109P 1/1/2005 451591 KW 109P 2/1/2005 398421 KW 109P 3/1/2005 416549 KWH 109P 4/1/2005 448018 KWH 109P 5/1/2005 434606 KW 109P 6/1/2005 475282 KW 109P 7/1/2005 576276 KWH 109P 8/1/2005 551846 KWH 109P 9/1/2005 514301 KWH 109P 10/1/2005 478728 KW 5 119P 467573 KW11/1/2005 119P 12/1/2005 471828 KWH 119P 1/1/2006 509862 KW 119P 2/1/2006 210941 KW 119P 3/1/2006 413160 KW 119P 4/1/2006 450327 KW 119P 5/1/2006 435205 KW 119P 6/1/2006 474727 KW 119P 7/1/2006 474575 KW 119P 8/1/2006 543519 KW 119P 9/1/2006 486785 KW j 109P 1/1/2005 530287 KW 109P 2/1/2005 472114 KWH 109P 3/1/2005 474305 KWH 109P 4/1/2005 513757 KW 109P 5/1/2005 473588 KW 109P 6/1/2005 498637 KW 109P 7/1/2005 584146 KW 109P 8/1/2005 567176 KW 109P 9/1/2005 532997 KW 109P 10/1/2005 522943 KW 6 k 109P 12/1/2007 3622 KW 109P 1/112008 26811 KW 109P 2/1/2008 203760 KW 109P 3/1/2008 229376 KW 109P 4/1/2008 473468 KWH 119P 119P 119P 119P 5/1/2008 6/1/2008 7/1/2008 8/1/2008 297394 662945 689312 330339 KWH KW KW KW 7 m 119P 1/1/2008 886449 KWH 119P 2/1/2008 1073590 KWH 119P 3/1/2008 1009864 KW 119P 4/1/2008 1108021 KWH 119P 5/1/2008 1100007 KW 119P 6/1/2008 1148757 KW 119P 7/1/2008 1139799 KWH 119P 8/1/2008 1271305 KWH 119P 9/1/2008 1245474 KWH n 109P 109P 109P 10/1/2007 11/1/2007 12/1/2007 13313 1054408 1034797 KW KW KW 8 0 109P 9/1/2006 293027 KW 109P 10/1/2006 464681 KW 109P 11/1/2006 449953 KW 109P 12/1/2006 416895 KW 109P 1/1/2007 455401 KW 109P 2/1/2007 380120 KW 109P 3/1/2007 378479 KW 109P 4/1/2007 394140 KW 109P 5/1/2007 350934 KW 109P 6/1/2007 379508 KW 109P 7/1/2007 394931 KW 109P 8/1/2007 495701 KW p 9/1/2007 1011/2007 463516 391973 KW KWH 119P 119P 9 q 4/1/2005 5/1/2005 6/1/2005 7/1/2005 315805 443307 464945 462391 KW KW KW KW 109P 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KW 109P 11/1/2006 370910 KWH 109P 12/1/2006 417894 KW 109P 1/1/2007 478601 KW 109P 2/1/2007 383907 KW 21 qq 109P 1/1/2005 352226 KWH 109P 2/1/2005 384179 KWH 109P 3/1/2005 360339 KW 109P 4/1/2005 511226 KW 109P 5/1/2005 715942 KW 109P 6/1/2005 783502 KW rr 119P 7/1/2005 759805 KWH 119P 8/1/2005 867367 KWH 119P 9/1/2005 999720 KWH 119P 10/1/2005 1230350 KW 119P 11/1/2005 1436507 KW 119P 12/1/2005 1463044 KWH 119P 1/1/2006 1447140 KWH 119P 2/1/2006 943202 KW 119P 3/1/2006 1429575 KW 119P 4/1/2006 1494840 KW 119P 5/1/2006 1527777 KW 119P 6/1/2006 1643376 KW 119P 7/1/2006 1597998 KWH 119P 8/1/2006 1669752 KW 119P 9/1/2006 1595541 KW 119P 10/1/2006 1518018 KW 119P 11/1/2006 1595569 KW 119P 12/1/2006 1690477 KW 119P 1/1/2007 1621904 KW 119P 2/1/2007 1931910 KW 119P 3/1/2007 1585975 KW 119P 4/1/2007 1779087 KWH 119P 5/1/2007 1753276 KW 119P 6/1/2007 1689724 KWH 119P 7/1/2007 1630780 KW 119P 8/1/2007 1594412 KW 119P 9/1/2007 1624844 KW 119P 10/1/2007 1472030 KW 119P 11/1/2007 1590209 KW 119P 12/1/2007 1481426 KW 119P 1/1/2008 1406591 KW 119P 2/1/2008 1632119 KWH 119P 3/1/2008 1416302 KW 119P 4/1/2008 1454715 KW 119P 5/1/2008 1469916 KW 119P 6/1/2008 1520924 KW 119P 7/1/2008 1351176 KW 119P 8/1/2008 1529514 KW 119P 9/1/2008 1638739 KW 22 55 109P 1/1/2005 76822 KW 109P 2/1/2005 95932 KW 109P 3/1/2005 136616 KW 109P 4/1/2005 171297 KWH 109P 5/1/2005 180864 KWH 109P 6/1/2005 306057 KWH 109P 7/1/2005 526155 KWH 109P 8/1/2005 377918 KW tt 119P 9/1/2005 304776 KWH 119P 10/1/2005 204792 KWH 119P 11/1/2005 81142 KW 119P 12/1/2005 48923 KW 119P 1/1/2006 69506 KW 119P 2/1/2006 34514 KWH 119P 3/1/2006 104602 KW 119P 4/1/2006 133531 KWH 119P 5/1/2006 122409 KWH 119P 6/1/2006 378437 KWH 119P 7/1/2006 462672 KWH 119P 8/1/2006 453408 KWH 119P 9/1/2006 437030 KW 119P 10/1/2006 345514 KWH 119P 11/1/2006 259158 KWH 119P 12/1/2006 188043 KWH 119P 1/1/2007 149369 KWH 119P 2/1/2007 151955 KW 119P 3/1/2007 136629 KWH 119P 4/1/2007 154287 KW 119P 5/1/2007 207466 KW 119P 6/1/2007 444498 KWH 119P 7/1/2007 514216 KWH 119P 8/1/2007 486470 KW 119P 9/1/2007 428494 KWH 119P 10/1/2007 425672 KWH 119P 11/1/2007 218269 KW 119P 12/1/2007 110693 KW 119P 1/1/2008 122387 KW 119P 2/1/2008 136812 KW 119P 3/1/2008 133249 KW 119P 4/1/2008 160528 KW 119P 5/1/2008 178470 KW 119P 6/1/2008 401571 KWH 119P 7/1/2008 461684 KW 119P 8/1/2008 557268 KW BEFORE THE IDAHO PUBLIC UTiliTIES COMMISSION CASE NO. IPC-E-08-10 IDAHO POWER COMPANY RESPONSE TO STAFF'S PRODUCTION REQUEST NO. 50 On-PeaklOff-Peak TOU Energy Charge Rate Differentials Large Commercial & Industrial Customer Tariffs On-PeaklOff-Peak Ratio Utah & Idaho RMP Sch. 8 RMP Sch. 9 48.3% 59.3% Arizona SRP SchE-32 APS Extra Large TOU Tucson Electric 85A 143.9% 33.0% 12.7% Montana MDURate31 57.2% Oregon PGE Sch. 87 20.0% California PGE E-19 SMUD GS- TOUI GS-TOU2 GS-TOU3 SDG&E AL-TOU LADWPA-3 LADWPA-2 88.3% 41.4% 89.0% 83.9% 46.1% 76.7% 77.8% New Mexico PNM3B PNM4B 196.0% 74.0% Kentucky Duke Energy, Rate DT 23.6% Wisconsin Wisconsin Electric CPL 42.7% 12.5kV-138kV 45.3% GT 138kV Florida FP&L GSLDT-l GSLDT-2 GSLDT-3 229.0% 269.7% 24.8% Connecticut Connecticut L&P 55 27.2% BEFORE THE IDAHO PUBLIC UTiliTIES COMMISSION CASE NO. IPC-E-08-10 IDAHO POWER COMPANY RESPONSE TO STAFF'S PRODUCTION REQUEST NO. 51 No r t h w e s t e r n P u b l i c S e r v i c e : S o u t h D a k o t a pr i c e d i f f e r e n t i a l : Fi r s t B l o c k S e c o n d B l o c k T h i r d B l o c k F o u r t h B l o c k F i f t h B l o c k kW h i p p e r k W h k W h i p p e r k W h k W h i p p e r k W h k W h i p p e r k W h k W h i p p e r k W h 0- 2 0 0 6 . 1 4 6 0 2 0 0 - 8 0 0 6 . 0 4 6 0 8 0 0 - 1 0 0 0 5 . 4 4 6 0 1 0 0 0 - 1 2 0 0 4 . 3 4 6 0 1 2 0 0 + 2 . 0 4 6 0 -1 . 6 3 % - 9 . 9 2 % - 2 0 . 2 0 % - 5 2 . 9 2 % Ut i l t y Ar i z o n a P u b l i c S e r v i c e - S u m m e r 0 - 4 0 0 pr i c e d i f f e r e n t i a l : Ro c k y M o u n t a i n P o w e r : U t a h - S u m m e r 0 - 4 0 0 pr i c e d i f f e r e n t i a l : Av i s t a : W a s h i n g t o n 0 - 6 0 0 pr i c e d i f f e r e n t i a l : Du k e E n e r g y : I n d i a n a 0 - 3 0 0 pr i c e d i f f e r e n t i a l : Ge o r g i a P o w e r - W i n t e r 0 - 6 5 0 pr i c e d i f f e r e n t i a l : Ge o r g i a P o w e r - S u m m e r 0 - 6 5 0 pr i c e d i f f e r e n t i a l : Av i s t a : I d a h o 0 - 6 0 0 pr i c e d i f f e r e n t i a l : *P R O P O S E D : R M P : U t a h - S u m m e r 0 - 1 0 0 0 pr i c e d i f f e r e n t i a l : Pu g e t S o u n d E n e r g y 0 - 6 0 0 pr i c e d i f f e r e n t i a l : Po r t l a n d G e n e r a l E l e c t r i c 0 - 2 5 0 pr i c e d i f f e r e n t i a l : Pa c i f i c P o w e r & L i g h t 0 - 6 0 0 pr i c e d i f f e r e n t i a l : Xc e l E n e r g y : N o r t h D a k o t a - S u m m e r 0 - 1 0 0 0 pr i c e d i f f e r e n t i a l : Xc e l E n e r g y : N o r t h D a k o t a - W i n t e r w i t h o u t el e c t r i c p r i m a r y h e a t i n g 0 - 1 0 0 0 pr i c e d i f f e r e n t i a l : Xc e l E n e r g y : N o r t h D a k o t a - W i n t e r w i t h el e c t r i c p r i m a r y h e a t i n g 0 - 1 0 0 0 pr i c e d i f f e r e n t i a l : 8. 5 7 0 0 4 0 0 - 8 0 0 42 . 0 7 % 7. 5 3 8 9 4 0 0 - 1 0 0 0 13 . 4 9 % 5. 4 0 9 0 6 0 0 - 1 3 0 0 16 . 3 4 % 9. 2 9 4 5 3 0 0 - 1 0 0 0 -4 1 . 7 1 % 4. 6 5 7 0 6 5 0 - 1 0 0 0 -1 4 . 1 5 % 4. 6 5 7 0 6 5 0 - 1 0 0 0 66 . 1 6 % 5. 8 4 2 0 6 0 0 + 13 . 1 8 % 8. 7 9 2 9 1 0 0 0 + 35 . 0 0 % 7. 4 3 1 4 6 0 0 + 23 . 9 6 % 4. 4 2 9 0 2 5 0 + 40 . 0 8 % 4. 5 6 9 0 6 0 0 + 57 . 7 6 % 6. 2 0 0 0 1 0 0 0 + -1 4 , 5 2 % 5. 4 2 0 0 1 0 0 0 + -1 6 . 7 9 % 5. 4 2 0 0 1 0 0 0 + -3 0 , 0 7 % 12 . 1 7 5 0 80 0 + 14 . 4 2 7 0 18 . 5 0 % 8. 5 5 6 2 10 0 0 + 10 0 7 7 9 17 . 7 8 % 6. 2 9 3 0 13 0 0 + 7. 3 7 7 0 17 . 2 3 % 5. 4 1 7 8 10 0 0 + 4. 4 4 6 4 -1 7 , 9 3 % 3, 9 9 8 0 10 0 0 + 3. 9 3 1 0 -1 . 6 8 % 7. 7 3 8 0 10 0 0 + 7. 9 7 6 0 3. 0 8 % 6, 6 1 2 0 11 . 8 7 0 4 9. 2 1 2 2 6, 2 0 4 0 7. 2 0 8 0 5. 3 0 0 0 4. 5 1 0 0 3. 7 9 0 0