Seeing the Light

Bjorn Lomberg argues that more efficient lighting simply leads to more consumption here.  It is certainly true that making something easier makes you use more of it, in the way building roads generates traffic, but surely for lighting there is an upper limit that people don't leave lights on when they are not there, or when it isn't dark.  As electricity costs money, they still have an incentive to limit their usage even if the light bulbs are efficient so I don't think the Lomberg stacks up.