20150901AVU to Staff 6.docx

AVISTA CORPORATION
RESPONSE TO REQUEST FOR INFORMATIONJURISDICTION:IDAHODATE PREPARED:08/21/2015CASE NO.:AVU-E-15-07WITNESS:Patrick EhrbarREQUESTER:IPUCRESPONDER:Annette BrandonTYPE:Production RequestDEPARTMENT:State & Federal RegulationREQUEST NO.:Staff-006TELEPHONE:[phone]REQUEST:
Please provide a description and an explanation of the $5,800 PT Ratio Correction reflected in January and February of 2015 on page 4 of Patrick Ehrbar’sworkpapers.  RESPONSE:
In the Company’s last General Rate Case, AVU-E-12-08, a PT Ratio of 34.76% was approved to be in effect until the next General Rate Case.In January 2015, Idaho’s portion of the PT ratio was inadvertently changed from 34.76% to 35.29%. In February 2015, a correction of this error was recorded for $5,800 which represents the difference between what amount should have been recorded with a PT ratio of 34.76% and what was actually recorded in January using a PT ratio of 35.29%. This was an error in January only; all other months were recorded utilizing the appropriate PT Ratio.
Please see Staff_PR_006 Attachment A for the February 2015 report, pages 16-17 which show the calculations for this correction.