I found some neat stuff on Southern Co.'s grid the other day, including what could be the very last 4160 V distribution on Georgia Power's system:

www.flickr.com/photos/connecticut_power_lines/33183986466/in/dateposted

I also photographed some interesting (and very old) transmission towers on a 46 kV line from Alabama Power:

www.flickr.com/photos/connecticut_power_lines/32409629214/in/dateposted

More pictures can be found on my FLICKR photostream:

www.flickr.com/photos_user.gne?path=connecticut_power_lines&nsid=&page=&details=1

Enjoy!