Excellent. If you're interested in the history of hydro electric in Scotland I can thoroughly recommend "The Dam Builders: Power from the Glens":

http://www.amazon.co.uk/dp/1841582255

Also this chap has a fairly good bunch of images and maps of various scheme throughout Scotland, apparently blagging his way into some facilities to take photographs:

http://www.corestore.org/hydro.htm

It's a bit "Web 1.0" but there's some interesting stuff to look at if you like that sort of thing (which I do :) )