What percentage of a household electricity bill typically comes from lights?
I always try to get my roommates to turn off the lights when they leave (to no avail). I've tried some other things that seem to have made a small dent on my energy bill (washing clothes only in cold water, turning off the auto-dry on my dishwasher...this seems to have reduced my bill by about $5 a month). Now I'm wondering, how much do lights comprise my energy usage, anyway? Isn't the fridge the thing that uses the most energy in my house?
This question is in the General Section. Responses must be helpful and on-topic.