[ASOC]

I dunno - what is the going rate for underwater power lines, 50 to 150 kM long?

New Zealand - North and South islands, are tied together with a large DC power cable so it has been done.

[ichabod1]

Back in the day that telegraphy guy strung a cable covered in gutta-percha all the way across the atlantic. Took him about three tries too -- it kept breaking and falling to the bottom. That was some high-voltage stuff too, that was the only way they could keep it charged across all those thousands of miles.