Either or I guess. They are both entertainers.
They changed the minimum energy standards for the bulbs. At the time it made all existing incandescent bulbs obsolete as they did not meet the energy standards. The industry innovated and created an incandescent light bulb that does meet the new standards. It is a rare case of government regulation actually spurring innovation. 70 watt bulbs give off as much light as the old 100w bulbs and they last 3 times longer. They cost more but pay for themselves over the life of the bulb.
Pretty sweet huh?
Wonder what it would do for growers if they did a similar thing with HID lights. We could all be using more efficient and brighter lights.