I live in an area where the electricity is produced with coal, and natural gas from Texas/Louisiana is cheaply available in the home. Because the heat transfer is so slow between electric stove burners and the pot, I fry and heat water with gas. I do a lot of cooking with the microwave, but that doesn't work on everything.
I heat the kitchen end of the house with natural gas. 100% efficient. The living room end of the house I heat with an unvented gas heater. 100% efficient. The experts tell me I will kill myself. Not yet. Direct gas didn't kill my grandmother, either. This house is NOT sealed with plastic sheet, the walls breathe. Top side is insulated with fiberglass. 4 walls are insulated with fire retardant newspaper. My gas costs were under $120 a month this winter, which was colder than average. I do let the inside temperature to get down to 56 on nights when it is 9 outside with wind gusts of 40 mph. I don't heat or cool the summer camp, it is drafty. It is cool enough in the summers with just a fan.
I've looked at solar panels, but it rains 220 days a year here. Won't pay off IMHO. Not enough windy days to pay off either. Green energy here is burning methane from county dumps in diesel generators.
Where I really save energy is gasoline & diesel. I used 3 gal gasoline last year mow my city lawn. I put 20 gal gas in a U-haul truck to transport a mower deck from city to the summer camp. I used ~40 gal diesel to mow my 23 acres at the summer camp. If the area is not mowed, it grows up in trash trees like locust & basswood. That sort of scrub land has 1/3 the value of mowed land. I'm too close to cashing out to let it go. I put 20 gal gas in the wife's car to take a short vacation in a nearby state. That's it. The wife drives everywhere, but the car gets 30 mpg city 48 mpg freeway.