A332 Emerg Gen
It appears that OVERTALK and CHEMICAL ALLI don't know anything about the back up power generation systems in large jet aircraft.
On the A332 there are 2 three phase AC generators driven by each engine. and a third generator powered by the APU which can replace either or both engine driven generators. As correctly stated the APU in this case was inop but this is not an ETOPS issue on the A332. With an engine out, the remaining engine driven generator can supply the entire electrical network.
(115 KVA of three phase 115/200 volt 400 hertz power). In the unlikely event of a subsequent generator failure the EMERG GEN starts which is normally supplied by the green hydraulic circuit. This supplies 8.6 KVA of three phase 115/200 volt 400hertz power. If the green hydraulic circuit was out then a RAM AIR TURBINE would drop out of the port wing flap canoe and supply 3.5 KVA 115/200 volt 400 hertz power.
I hope that armed with the facts you can now engage in sensible debate.