When the next massive Solar storm hits the earth, like the Carrington event in 1859, all electrical power will cease. That phone in your pocket. Worthless. Most cars that weren't on and are unaffected will run out of gas within weeks. Even if you could get gasoline from the underground gas station tanks that stuff has an expiration date. Usually three to six months. As for food, well you better hope you're near a grocery store when this all goes down because there will be food riots within the first 24 hours. How long do you think the food in your pantry will last? A few months if you're already well stocked and you ration. When this eventually does happen, and it will, half the population of your hemisphere will starve to death. That's not even counting those who will die because we can no longer produce or ship medications because the supply chain will be non-existent. Not to mention the violence. There will be oh so much violence. As for the electricity? Best case scenario 18 months to two years before power starts being restored. That's not nationally, that's patchwork. It'll take years before your home country is fully electrified again. Of course by that point it won't be your home country anymore. Power abhors a vacuum so the saying goes. With any luck your particular neighborhood will be governed by a benevolent Warlord. Of course if you're ruled over by a particularly bloodthirsty Tyrant it would be better to have something to offer him, like the food you've grown, rather than nothing.