20170911Avista to Idaho Forest 1-2.pdf

AVISTA CORPORATION RESPONSE TO REQUEST FOR INFORMATION JURISDICTION: IDAHO DATE PREPARED: 09/05/2017 CASE NO: AVU-E-17-01 / AVU-G-17-01 WITNESS: Karen Schuh
REQUESTER: Idaho Forest Group RESPONDER: Kord Parnell TYPE: Production Request DEPARTMENT: Accounting REQUEST NO.: IFG-001 TELEPHONE: [phone]
REQUEST: Please provide a summary of all entries made to Distribution Plant Account No 360-Land & Land Rights as of December 31, 2016. Please indicate which entries relate to distribution structures and improvements; station equipment; poles, towers, & fixtures; overhead conductors & devices;
underground conduit; or underground conductors & devices. RESPONSE:
Total $370,129.60 Poles, Towers, & Fixtures $367,850.00 - St Maries River RR Permit

Underground Conduit $ 2,279.60 - Orogrande Cable Replacement Easement

AVISTA CORPORATION RESPONSE TO REQUEST FOR INFORMATION JURISDICTION: IDAHO DATE PREPARED: 09/01/2017 CASE NO.: AVU-E-17-01/AVU-G-17-01 WITNESS: Tara Knox
REQUESTER: Idaho Forest Group RESPONDER: Tara Knox TYPE: Production Request DEPARTMENT: State & Federal Regulation REQUEST NO.: IFG - 002 TELEPHONE: [phone]
REQUEST: For the Avista demand allocator identified as D02, Coincident Peak Weighted 12, please provide the following: a. By month for the 12-month period ending December 31, 2016, for each class of service,
the actual demand value used as the basis to calculate the “weighted” kW demand value used in D02. b. By month for the 12-month period ending December 31, 2016, for each class of service, the weighted demand value used to calculate the D02 allocator.
c. Please describe the process used by Avista to “weight” each monthly value for each class
of service. Please provide copies of all calculations used in determining the monthly weighted demand values by class and an explanation of the rationale for the weighting process used by Avista to calculate the D02 allocator for the 12-month period ending December 31, 2016.

RESPONSE: a. Please see the work papers provided with the Company’s initial filing. The requested
information is shown on the Knox Cost of Service work paper page COS-122. For your convenience an electronic copy of this work paper is provided as IFG_PR_002_Attachment A. b. Please see the work papers provided with the Company’s initial filing. The requested information is shown on the Knox Cost of Service work paper page COS-124. For your
convenience an electronic copy of this work paper is provided as IFG_PR_002_Attachment A. c. The monthly weights are developed by subtracting the system annual average demand from the system monthly peak demand to determine monthly “excess demand”. The monthly
demand values determined by the demand study are then weighted by the month’s
proportional contribution to the sum of the monthly “excess demand”. This allocation factor has never been used in the Company’s cost of service study in a general rate case. It was developed for informational purposes as part of the February 8, 2011 Cost of Service Workshop arising from the settlement in case number AVU-E-10-01. The weighted 12-CP
allocation factor was intended as a compromise between the 7-CP and the unweighted 12-CP
that would put more value on the highest peak months without totally eliminating the impact of the need to plan for peaks during shoulder months.