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Home My WebLink About20160713AVU to Staff 40.docAVISTA CORPORATION RESPONSE TO REQUEST FOR INFORMATION JURISDICTION: IDAHO DATE PREPARED: 07/06/2016 CASE NO: AVU-E-16-03 WITNESS: Tara L. Knox REQUESTER: IPUC RESPONDER: Tara Knox TYPE: Production Request DEPARTMENT: State & Federal Regulation REQUEST NO.: Staff - 040 TELEPHONE: (509) 495-4325 REQUEST: The Company's weather normalization adjustments were obtained by applying coefficients obtained from the Company's 2005 – 2014 regression analysis to 2015 Heating and Cooling Degree Days. Did the Company consider using the consumption estimate obtained directly from its model? If so, why was this estimate not used? RESPONSE: No, the purpose of the weather normalization is to adjust loads for weather. If the predicted model were compared to booked usage it would eliminate other usage changes not associated with weather (such as energy efficiency) that should be reflected in the test year. Page 3 of 1 Page 1 of 1