A couple of comments have mentioned the global “turn off your lights” night. Lubos Motl at the Reference Frame has a suggestion
Tonight, at 8 p.m. local time, you should turn on all the light bulbs you have for 60 minutes (it will only cost you 3 cents per light bulb in average for the whole hour) to fight global obscurantism. You should look how many lights are on around. Every light bulb you see will be a sign of the audacity of hope, as Jeremiah Wright would say.”15 years ago, I would have done this. Now, I plan to turn all my lights on as my silent form of protest against the likes of Gore and his Enron like carbon credit scheme. I’m going to “Watts Up” my house!
If you want to learn about the event, here is the web page:
Of course if you are simply interested in saving money and using less electricity (something I’m for, especially here in California since the state has hamstrung itself for future power generation) then get one of these:
I have several. They work great. And, buying one via this link sends some help back to me for keeping my www.surfacestations.org effort running.