I think the Garleans may have already done that with their Capital city since Lore did mention the Garlean Empire is already advanced far enough to use Aether powered machines from house appliances and other stuff.
Heck the Machinist Magitek Pack you see the Job carry with them...
SPOILERS
Is powered by that same system which allows them to generate unlimited ammo, create their Unlimited supply of Turrets, and even Power their Turrets serving as a portable power source and Aether manipulator.