Fission Reactors cost 1,000,000 credits. They consume 10 tons of weapon space and grant an additional unit of fuel every 16 frames. A ship may be outfitted with up to 2 Fission Reactors. The cheap Fission Reactors cost 100,000 credits. They consume 8 tons of weapon space and grant an additional unit of fuel every 35 frames. A ship may be outfitted with only a single cheap Fission Reactor. After being fitted on a ship for 240 days, there is a 60% chance each day thereafter that the reactor becomes faulty. A faulty reactor has a hugely increased mass and hugely decreased price and effectiveness.