The lights go out and they stay out. That single premise has powered a whole strand of modern fiction, and Joey Wells works it directly in The Grid Is Gone, which our catalogue gathers under the banner EMP Survival in a Powerless World.
The shelving lands in four places at once, from crime and thriller through to science fiction, which is a fair reflection of how this kind of story behaves. A science-fictional premise supplies the setting, the tension belongs to the thriller, and the questions about neighbours, supplies and improvised order are plain human drama. Just under seven hours keeps the pace tight, which suits a scenario running on urgency.