A319 Captain reported an ECAM ELEC GEN 1 FAULT followed by an ECAM APU AUTO SHUTDOWN during climb. After coordinating with ATC; the flight diverted to a suitable airport for landing.

Narrative

After departing ZZZ; during the climb phase of flight; we received the ECAM ELEC GEN 1 FAULT. Non-normal procedures and methodology were followed. The generator did not reset and the APU was started to return to a 2 generator operation. After a few minutes we received another ECAM APU AUTO SHUTDOWN. Non-normal procedures and methodology were again applied. We were now down to 1 generator; so we advised ZZZ Center and made the decision to divert to ZZZ1. We also informed Dispatch; and communicated with the Flight Attendants and passengers of our status and our intent to make a precautionary landing in ZZZ1. After landing; we had the Airport Rescue and Firefighting (ARFF) team at ZZZ1 inspect the aircraft and then we proceeded to taxi to the gate. Entries were made into the Aircraft Maintenance Logbook (AML) regarding the two non-normals that we experienced. The cause is the generator failing to reset; combined with the shutdown of the APU left us in a situation where we could not continue the flight to the planned destination. No suggestions; as we had the unfortunate instance of having the APU auto-shutdown; while serving as a replacement for generator 1. I had just finished communicating the generator's failure to reset with the Dispatcher/Maintenance to see if they were in agreement to continue to ZZZZ. We then had the APU auto-shutdown ECAM; which led to the diversion to ZZZ1.