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FORM 8-KExact Name of Registrant as Specified inCharter; State of Incorporation;IRS EmployerCommission File NumberAddress and Telephone NumberIdentification Number1-8962Pinnacle West Capital Corporation
(an Arizona corporation)
400 North Fifth Street, P.O. Box 53999
Phoenix, AZ 85072-3999
(602) 250-100086-05124311-4473Arizona Public Service Company
(an Arizona corporation)
400 North Fifth Street, P.O. Box 53999
Phoenix, AZ 85072-3999
(602) 250-100086-0011170oWritten communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))Item 9.01. Financial Statements and Exhibits.Exhibit No.Registrant(s)DescriptionPinnacle West
APSEarnings News Release issued on April 29, 2011.Pinnacle West
APSPinnacle West Capital Corporation quarterly consolidated
statistical summary for the three-month periods ended
March 31, 2011 and 2010.Pinnacle West Capital Corporation 1st Quarter 2011
Results slide presentation accompanying April 29, 2011
conference call.Exhibit IndexNEWSFOR IMMEDIATE RELEASEApril 29, 2011Media Contact:Alan Bunnell, (602) 250-3376Page 1 of 4Analyst Contacts:Rebecca Hickman, (602) 250-5668Geoffrey Wendt, (602) 250-5643Web site:pinnaclewest.comNET LOSS ATTRIBUTABLE TO COMMON SHAREHOLDERS (GAAP MEASURE) TO ON-GOING EARNINGS (LOSS) (NON-GAAP FINANCIAL MEASURE)Three Months EndedMarch 31, 2011March 31, 2010Dollars inDilutedMillionsEPSNet Loss Attributable to Common ShareholdersAdjustment:Discontinued operations, primarily real estateOn-going Earnings (Loss)PINNACLE WEST CAPITAL CORPORATION CONDENSED CONSOLIDATED STATEMENTS OF INCOMETHREE MONTHS ENDEDMARCH 31,20112010Operating RevenuesRegulated electricity segmentOther revenuesTotalOperating ExpensesRegulated electricity segment fuel and purchased powerOperations and maintenanceDepreciation and amortizationTaxes other than income taxesOther expensesOperating IncomeOtherAllowance for equity funds used during constructionOther incomeOther expenseInterest ExpenseInterest chargesAllowance for borrowed funds used during constructionIncome (Loss) From Continuing Operations Before Income TaxesIncome TaxesIncome (Loss) From Continuing OperationsLoss From Discontinued OperationsNet of Income TaxesNet LossLess: Net income attributable to noncontrolling interestsNet Loss Attributable To Common ShareholdersWeighted-Average Common Shares Outstanding BasicWeighted-Average Common Shares Outstanding DilutedEarnings Per Weighted-Average Common Share OutstandingIncome (loss) from continuing operations attributable
to common shareholders basicNet loss attributable to common shareholders basicIncome (loss) from continuing operations attributable
to common shareholders dilutedNet loss attributable to common shareholders dilutedAmounts Attributable To Common ShareholdersIncome (loss) from continuing operations, net of taxDiscontinued operations, net of taxNet loss attributable to common shareholdersQuarterly Consolidated Statistical Summary Periods Ended March 31, 2011 and 20103 Months Ended MarchLineIncr (Decr)EARNINGS CONTRIBUTION BY SUBSIDIARY ($ Millions)Arizona Public ServiceAPS Energy ServicesSunCorEl DoradoParent CompanyIncome From Continuing OperationsIncome (Loss) From Discontinued Operations Net of TaxNet IncomeLess: Net Income (Loss) Attributable to Noncontrolling InterestsNet Income Attributable to Common ShareholdersEARNINGS PER SHARE BY SUBSIDIARY DILUTEDBOOK VALUE PER SHARECOMMON SHARES OUTSTANDING (Thousands)Average DilutedEnd of PeriodELECTRIC OPERATING REVENUES (Dollars in Millions)REGULATED ELECTRICITY SEGMENTRetailResidentialBusinessTotal retailWholesale revenue on delivered electricityTraditional contractsOff-system salesTransmission for othersOther miscellaneous servicesTotal regulated operating electricity revenuesMARKETING AND TRADINGElectricity and other commodity salesTotal operating electric revenuesELECTRIC SALES (GWH)Retail salesWholesale electricity deliveredRetail load hedge managementTotal regulated electricityWholesale sales of electricityTotal electric salesPOWER SUPPLY ADJUSTOR (PSA)
REGULATED ELECTRICITY SEGMENT
(Dollars in Millions)Deferred fuel and purchased power regulatory asset/(liability) beginning balanceDeferred fuel and purchased power costs current periodInterest on deferred fuelAmounts refunded/(recovered) through revenuesDeferred fuel and purchased power regulatory asset/(liability) ending balanceAVERAGE ELECTRIC CUSTOMERSRetail customersWholesale customersTotal customersCustomer growth (% over prior year)0.4%0.6%(0.2)%RETAIL SALES (GWH)
WEATHER NORMALIZEDRETAIL USAGE
(KWh/Average Customer)RETAIL USAGE
WEATHER NORMALIZED
(KWh/Average Customer)ELECTRICITY DEMAND (MW)Native load peak demandWEATHER INDICATORS RESIDENTIALActualCooling degree-daysHeating degree-daysAverage humidity10-Year AveragesENERGY SOURCES (GWH)Generation productionNuclearCoalGas, oil and otherTotal generation productionPurchased powerFirm loadMarketing and tradingTotal purchased powerTotal energy sourcesPOWER PLANT PERFORMANCECapacity Factors99%96%3%78%80%(212%11%1%System average47%46%ECONOMIC INDICATORSBuilding Permits Metro Phoenix (a)Single-familyMulti-familyArizona Job Growth (b)Payroll job growth (% over prior year)(0.1(4.44.3%Unemployment rate
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