"Destiny"

Basically, in the near future, we run mostly on solar energy. There's a revolutionary technology that allows us to drain energy from the core of the earth. That's a bad idea, we manage to activate a couple of supervolcanos... and we enter a manmade ice age. for many years there is no sun in the sky because of the thick clouds of volcanic dust and gasses. There's a seismic activity never seen before. All the tech that relies on solar power is down. This looks like the end of our civilization, less than a million people managed to survive. Decades later, one of the AI projects created by Simon Peterson survived this cataclysm. This is where the story begins.