A320 ACFT ON SID HAD FAILURE OF #1 ELECTRICAL BUSSES AND RELATED FLT INSTS; AUTOPLT; ETC. FLC NOTIFIED CTLR REQUESTING VECTORS BACK FOR LNDG.

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DEPARTING PHX RWY 26R ON ST JOHNS 2 DEP STARTING THE R TURN AT 9 DME WE EXPERIENCED AN AUTOPLT DISCONNECT; FOLLOWED BY AN ECAM FOR THRUST REVERSER 1 FAILURE; GENERATOR 1 FAILURE; AC ESS BUS FAILURE; AUTOTHRUST FAILURE; FLT DIRECTORS FAILURE; FAC 1 FAILURE; CAPT PFD; ND; AND UPPER ECAM FAILURES AND MOMENTARY FAILURE OF FO'S; PFD; ND; AND LOWER ECAM AND BOTH VHF RADIOS AS WELL AS FAILURES OF BLOWER FAN; EXTRACT FAN; AND GALLEY PWR; IN BOTH THE NORMAL AND OVERRIDE POS. WHILE COMPLETING THE R TURN TO A 060 DEG HDG AS CALLED FOR ON THE SID (WE HAD NO RADIOS OR NAV DISPLAYS); WE WERE ABLE TO RESTORE THE AC ESS BUS AND USE OF VHF COM #1; AT WHICH TIME DEP CTL CALLED OUT B737 TFC AT OUR 2 O'CLOCK POS. THE FO (PF) CONTINUED THE R TURN IN ORDER TO KEEP THE TFC IN SIGHT; WHILE I WORKED THROUGH THE ECAM AND ATTEMPTED TO RESTORE ADDITIONAL SYS. I INFORMED THE CTLR THAT WE HAD THE TFC IN SIGHT; AND THAT WE WERE EXPERIENCING ELECTRICAL PROBS; AND REQUESTED RADAR VECTORS CLR OF TFC AND TERRAIN; AND THAT WE WOULD BE RETURNING TO PHX FOR LNDG. WHILE BEING VECTORED THE CTLR ASKED IF WE HAD PERFORMED A NORMAL DEP. I ANSWERED YES; HOWEVER; IN RETROSPECT WE PROBABLY DID HAVE A SIGNIFICANTLY REDUCED RATE OF CLB; DUE TO THE LACK OF FLT INSTS. I ASKED IF THERE WAS ANY PROBS; THE CTLR RESPONDED; NEGATIVE. I CALLED ON THE PHONE AFTER WE LANDED; AND THE SUPVR AGAIN ASSURED ME THAT THERE WAS NO PROB. FROM OUR PERSPECTIVE THE INITIAL PROB WAS CAUSED BY EQUIP FAILURE; IF ANY OTHER PROBS EXISTED; I DO NOT KNOW OF ANY VIABLE SUGGESTIONS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR CAPT HAS EXCELLENT COORD AND FEEDBACK FROM HIS COMPANY. THOUGH THEY STILL DON'T KNOW WHAT TRIGGERED THE MULTIPLE FAILURE THEY DID REPLACE NUMEROUS COMPONENTS AMONG WHICH WERE GENERATOR LINE CONNECTORS (GLC); ELECTRICAL LINES; CONNECTORS AND VARIOUS COMPONENTS. THE #1 VHF SHOULD REVERT TO THE BATTERY BUS IN EVENT OF LOSS OF PWR AND WHEN THE EVENT OCCURRED BOTH PRIMARY SCREENS/INSTS WENT BLANK EXCEPT FOR THE STANDBY GYROSCOPE HORIZON; STANDBY AIRSPD AND ALTIMETER; PLUS THE #1 VHF RADIO INITIALLY WAS OFF LEADING THE CAPT TO THINK HE HAD TOTAL ELECTRICAL FAILURE INCLUDING THE BATTERY. HOWEVER; THE RADIO CAME BACK ON AFTER ABOUT 15 SECONDS. THAT PARTICULAR FAILURE APPARENTLY WAS A MYSTERY TO EVERYONE. RPTR HAD COMMUNICATED WITH HIS COMPANY MAINT; TRAINING DEPT AND UNION SAFETY COMMITTEE.