LED is very expensive -- up front. The benefit is that when done right they last almost forever in standard living environment temperature ranges, and they use less electricity. Maybe they're saying 50% because of how expensive it is to install.
Well seems the problem is if we all did that So. California Edision Co. would suffer a huge drop in demand and they would lose money
They definitely would. Maybe the greenies want that demand to be replaced by electric cars? There's already talk about how much stress the popular adoption of electric cars would put on the grid.
LED under cabinet lighting sells at Lowes home improvement for @ $157.00 vs $700.00 for common fluorescents from a lighting supplier.