On Tue, 03 Jan 2012 23:59:34 +0000, J. P. Gilliver (John) wrote:

the trans-channel interconnectors are actually at DC
(and I believe longer cables, such as those to Scandinavia
if there are any, are too)

Here is a useful map of HVDC interconnections.

http://upload.wikimedia.org/wikipedia/commons/5/51/HVDC_Europe_annotated.svg

RED existing

GREEN under construction

BLUE tentative, plans provisional

Scotland could be linked to Iceland!