Dark Energy reactor

In the Half-Life Universe, there are two types: Citadel Reactor and Dark Fusion Reactor.

In the Citadel Reactor, the Dark Energy supply as well as electricity is linked to a network of reactors. A single reactor locally increases the intensity of ZPE fluctuations, creating a sphere of volatile spacetime in the reactor core that has a high concentration of Dark Energy. Dark Energy is converted into particles of exotic matter, which are emitted as high energy plasma. The exotic Dark Energy plasma further amplifies the quantum fluctuations and causes a chain reaction within the core that makes the reactor self-sustaining and capable of producing amounts of power many orders of magnitude greater than nuclear fusion reactors. The rate of the reaction has to be carefully regulated and balanced between the plasma and ZPE fluctuations, or a core breach can occur and result in a massive explosion.

A Dark Fusion Reactor fuses exotic particles of Dark Energy plasma together, releasing large amounts of displacement energy. This amount of energy might be used for a multiversal teleportation system. A breach of such a reactor can cause anomalies in spacetime and subspace rifts into other dimensions or instances.

Dark Energy plasma can be stored in these reactor cores, which acts as a massive battery or generator.