The average amount of electricity used while camping is roughly zero. (screw your rv that doesn't count.)
Running these numbers through my handy internet machine; 11280/365*7= we could save 216 kWh of energy per person per year just by going camping for a week. That's around 67.6 gigawatt hours/year, which is equal to the total amount of solar energy produced in the US in 2011. Or enough to power a ton of lightbulbs for a long time.
So do your part for the environment, and go chill the fuck out in the woods.