What was found
PRIOR TO DEPARTURE, APU WAS DEFERRED. DURING CRUISE, R GEN OFF EICAS & L/R UTILITY EICAS MESSAGE APPEARED. RT GEN OFF DISPLAYED THEN RESET, DISPLAYED A SECOND TIME. REQUIRED LANDING AT NEAREST SUITABLE AIRPORT PER QRH. CREW DECLARED AN EMERGENCY AND AIR DIVERTED TO COS (DIV). MTC DEFERRED PER MEL 24-00-1-1. A/C RETURNED TO SERVICE.