The floodlights over the garage have a 50 watt halogen bulb on the left, and a 9 watt LED on the right. The LED provides a lot of light when you are in the 20 degree beam. The main problem with this light is that the motion sensor senses motion during a snowstorm and stays on all night. I may look for a better quality sensor, and keep the halogen bulb at least until it needs replacement.
The wall lights over the kitchen sink are another opportunity to switch to LED. Two four-watt candle bulb from Earth LED would probably work well in place of the 25-watt incandescents.
This hall light is one of the few places I have been able to use a CFL. The glass canopy is attached with three set screws that leave a little air space for ventilation, and it is probably an 11-watt.
A community's energy use is a product of population times affluence times life style. Maybe I can make a few life-style changes while I am still relatively affluent. However, the person with the lowest carbon footprint that I know of is an acerbic, childless spinster who doesn't believe in peak oil or global warming. However, she lives in a very small apartment and walks almost everywhere because she is allergic to her car.