(Given that for 6 months of the year we are heating the place so much anyway saving a few $ on lighting would just add it to the heating bill!)
that's actually a very valid point. Where I live we have relatively low electrical costs (.08) and we do require heat for half the year and in the summer it is light out till late in the evening, so I wonder if there would really be any cost savings. I guess I also wonder if heating a house (partially) on electricity is "greener" than 100% natural gas?