Most energy use in the path from farm to fork happens in the kitchen. Just driving to the grocery store to pick up the groceries uses more energy than all the industrial agriculture, shipping warehouses, and long-hauls trucks used to get your groceries into the store. Also, depending on how much you buy at one time, you are likely burning more calories (in gasoline) than you just bought....think about that the next time you're calorie-counting!
Apparently, most of the (increasing) energy consumption in the kitchen comes from more people owning dishwashers and second refrigerator/freezers. Energy use has increased in the kitchen even while people spend less time in the kitchen.
Of course, the above perspective does not mean that reducing energy consumption in any sector is less important than any other sector.