No you can still have good coffee at camp. There are heaps of different coffee makers which don't rely on electricity, many are quite bulky or fragile(glass) though.
As I said before, the Aeropress is pretty good (& doesn't cost an arm & a leg). I also have a Porlex hand grinder (pictured here) which stores nicely inside the Aeropress to save space.
Another recommended to me for a 'proper' espresso is the Portapresso. You'd need to be sitting down before you check out it's price though! Certainly not in the same price range as the Aeropress! (10 times the price).
I also have one of these which is pretty good once you've mastered the technique to suit your taste.