Audit of market-based rate authorization and electric quarterly report filing requirements at Pinnacle West Capital Corporation

25 pages (PDF version). File size: 586.199 KB. Docket No. PA08-4-000. The Division of Audits within the Office of Enforcement (OE) of the Federal Energy Regulatory Commission (Commission) has completed its audit of Pinnacle West Capital Corporation (PWCC) and the following subsidiaries: Arizona Public Service Company (APS), Pinnacle West Marketing & Trading Co., LLC (PWMT), and APS Energy Services Company, Inc. (APSES). The audit evaluated compliance with (1) requirements of market-based rate authorization and (2) Electric Quarterly Report (EQR) filing requirements under 18 C.F.R. § 35.10b (2007). The audit covered the period from January 1, 2006 to June 30, 2008. The audit found 11 transactions were misidentified and APS committed several minor reporting errors in its quarterly earnings reports.