Fish is a good protein, and place to start to conserve money, have fun, and provide for some tasty future meals. A good freezer unit that can hold several hundred pounds of food is fairly reasonable in terms of cost, new models are less electric consuming than in the past, and can be hooked up to a power generator if needed. Please note that in this article at the bottom of the page, is listed "Fact Sheet" click on this for more saving methods, and how to issues.
http://ohioline.osu.edu/hyg-fact/5000/5351.html