I was playing in a creative world to see how viable luminators are for light.. and i still feel they may not be balanced fully to be used as a long term light source.
8 solar panels and one batt box can keep active 14 luminators forever.
They act i believe as a single torch but the only benefit is they can be placed on the ceiling.
I know the limit of light is one of the major issues. ( can't get above 15)
I saw someones mod before about flood lighting but its stuck on a old version i believer http://www.cosc.canterbury.ac.…craft/mods/GregsLighting/
I wonder if luminators could have a new item that gives something like this? as a upgrade from luminators?
One problem i found.. in the test world.. when i would have 36 luminators 2 rows 4 spaces between each (so 90 blocks x 10 ) sometimes when i went back to it.. it caused the game to pause/move slow due to updating all the lighting.. I am not sure if its a issues with IC2 or minecraft itself
thanks guys
this is best improvement as i saw from many months. I'm making chess like floors with luminators and it both looks and works beautiful.. And about power - it is supposed to be thet way 
- this is light we are talking about not damn railgun