As Normcall have mentioned, the same 50watt lighting will consume the same power, no matter what voltages it runs, if for the 12v bulbs, you might also need a transformer, which also will consume more or less power. I think the most important point for you to promote the 12v lighting is the lumen efficiency, like if the 12v lighting is made of LED, efficiency of Link Removed
can be over 100lm/w, over 10 times higher than efficiency of incandescent bulbs, 2 times higher than efficiency of CFL bulbs.
more detailed 12v led lighting advantage:
18 November 2011 at
03:36 PM by