On a Kardashev scale, humanity is currently ... not just fossil fuels. 2) Type II civilization: A civilization that can harness all the energy from its stars (for us, it's the Sun).

On this Kardashev scale of energy use measurement, Earth is a 0. Baghram estimates that an advanced, AI-powered alien civilization would be between a 2 and a ... built around a type of black ...

If we, or any advanced civilizations that might be out there succeed, then they would be classed as Type II on the Kardashev scale ... (the Dyson swarm) at 2.13AU from the sun.