I am probably not using all that much less in very recent times, owing to two busy computers and work areas (one for simulation, invoicing, and internet, one running the Ap at the test bench). And when it gets really warm I have to run A/C both for my own comfort and to keep MTBF on equipment as high as possible. In the winter I get by with a pretty low energy consumption as I have other apartment units on a couple of sides, and I also tolerate being cool better than some. This is good because the only heat in the apartment is electrical. When necessary I use the low surface temperature space heaters which are slow to warm but don't waste much on visible photons.
But in late 2004 I vacated 2600 square feet of office and lab space, and have been living and working in these cramped quarters ever since, thus cutting my proverbial carbon footprint substantially. I go days at a time without driving my fair-to-middling-mpg Accord. I also prepare virtually all of my meals, leading a number of restaurants to presume that I have disappeared or died.
I have tried on some CFLs for size as it were and still can't use them near the bench most of the time due to the EMI. But where there are still incandescents, and I know I'm going to be needing their light just for a minute or two (looking for parts or for a book in some unlit area) I will often grab a flashlight, sometimes an LED one, to avoid thermally cycling the incandescents and leading to their premature failure. I guess it all adds up.