Solar + batteries competes with wires by being distributed. You install as much generation as you need, right where you need it. In this context you could think of it as a "wireless power receiver" and the sun as the transmitter.
Yep, and fair enough, NZ is a lot more bumpy. It's still not that difficult to install rooftop solar etc. in most situations, even if it's not applicable to every case, though.
