Solaric reactors are massive reactors typically used to power entire cities or huge ships. They are typically open spheres of solarium plasma suspended by a powerful containment field; the high energy density allows the outer shell of the core to fission and allow the products to recede towards the inner center, where they fuse to produce an absurd amount of energy; reactors like this can often hold tonnes of solarium at a time, injecting more fuel through a tractor beam and harvesting it from an electron beam. They are highly expensive to build and run, but can provide a huge power output. Produces very little waste.