Not A Fission Reactor in Sight

It is notable that Alan does not describe any exotic power supplies in the sense he does not say “Our mothership is powered by a fission reactor”. He does say that they have some type of broadband energy absorption system on the skin of the ship, which would have the side effect of making it completely black.

Alan instead describes a battery, one based on physics and not chemistry. The battery is some combination of powerful magnetic fields and a stable almost solid like form of plasma.