Wasting food....Purchase some reusable freezer containers. As soon as supper is over, take the leftovers and put them in the containers to pull out for an easy lunch (does your dh take lunch to work 'cause this is how I use my freezer stash of leftovers!) or a smorgasbord of a supper one night a week/month or so. If you only have a small freezer, lots can be saved in ziploc bags (rewash and reuse when you can--not if there's been raw meat in there) and frozen flat to save room. The other thing I do is to make my leftovers into something else entirely. As for what freezes well, lots does! The things that I do not freeze are: potatoes (they tend to change in texture), unless it's mashed or something in a soup, cooked pasta ends up getting mushy, things w/mayo tend to separate, same w/cream if I remember correctly. When freezing foods, make sure to get all the air out of the bag if you use bags (I use my foodsaver) to prevent freezer burn. A friend had some dark cherries that were a bit freezer burned and we made jam for Christmas baskets out of it and you couldn't tell at all--it's great! I get fresh goat milk from a neighbor and I have a freezer FULL of it. I also get butter on sale and freeze that. You can also freeze cheese, but it gets crumbly so only freeze what you plan to use grated later.
Electricity, let's just say I'd kill for your bill, lol. I just paid mine and it was $463. No, really, unplug stuff, don't use your dryer, try not to run a load of laundry unless the washer is full--same with the dishwasher, and oven--don't use the oven unless you are using it for several things at once. Do you have a fireplace? Heat w/wood (there are plenty of sources for free wood if you look) once a week use your oven for several items and that combined w/the fireplace will provide lots of heat. As for a/c, yeah, I'm in TX too and my dh does HVAC on the side so I know how important that is!!
Food budget--eat out only once a month and use coupons. My dh and I always shared a meal when we ate out unless I was nursing or pregnant because who can eat all that food? restaurant.com has great coupons, and even better sales on the coupons periodically. Like $25 worth of food for $1 if you catch them at the right time. For at home eating, do you have dietary restrictions? I recommend a nice big pot of soup once weekly. Serve a cup of soup before each meal. Really stretches the budget! You can freeze it in little portions too for lunches. Have you ever read the Tightwad Gazette? If not, there's lots of little ideas in there to help you out.
Where abouts in TX are you if you don't mind my asking? You can pm me.