I didn't mean for this to get into a debate on cfl's or led's, but o-well when the technology is advancing at a decent pace.  I may have to "tinker" with some lighting solutions.  I know the x10 stuff has some things I can perhaps "adapt" to my design similar to the ir control.  I'm still thinking motion control would be the easiest way to control light on or off.  This would be coupled with an eye of course so it won't turn on during the day.  Not sure about the dump load yet.  I guess my first step is to obtain a solar panel of some sort.  I'll ask my dad back at the farm if he has any older fence chargers that "don't work" anymore that I could have.  I've got a few ups and alarm batteries that hold a decent charge that I use for hobbies and such.  I'll keep my options open about using 12v flourscent, but for the moment I'm thinking LED's are more scalable in light output vs run time.