Australia is risky because as a member of AUKUS they are likely to be a combatant in the anticipated war between America/Taiwan aligned countries and China. This puts Singapore's power supply in the crosshairs.
Eh, Singapore is a bridge country for China to western markets. And is 80% ethnic Chinese.
At the point random power plants in the Australian Outback are being bombed to get to Singapore, Singapore has gotten so fucked already they can’t stand.
The question assumes I expect someone to cut a power cable between Australia and Singapore.
I don't.
In the event of Chinese move on Taiwan then if Tom Cotton & Co. have decision making power then it's possible but unlikely they'd be dumb enough to think perturbing grid power in Singapore might exert pressure on China .. but honestly, who'd actually be that silly?
At the point random power plants in the Australian Outback are being bombed to get to Singapore, Singapore has gotten so fucked already they can’t stand.