I have worked in very old facilities and brand new ones.Just looking for some thoughts.One place I worked had lighting ballasts with date codes from the mid sixities.Motors even older!I don't know the old breakers and mcc's and ballasts just seemed to last a lot longer than todays stuff.Granted some of the older stuff was a lot more dangerous ie line voltage controls for everything.I find myself replacing the newer more "efficent stuff more frequently than it's older counterparts.I guess what I am tryin to say is where is your efficency when the parts are double and last a fraction of the time?