The transformer will step up any voltage
you can retreive trans from old radios or larger electronics or old junk stoves ect
The tran has input leads and output leads
a ground wire is driven into the ground by a metal rod, or your homes existing ground wire driven into the ground
Most if not all power you see at the pole are a ground wire with a transformer , the power coming in from the ground is small but gets stepped way up through the coil of wire in a transformer. Size of wire matters
It is very easy to create power grid from a transformer with leads to a receptacle and ground wire