The tech reactor is an add-on structure in StarCraft II. It is only available in the single-player campaigns and Co-op Missions.


Tech reactors were developed by Raynor's Raiders scientist Egon Stetmann after doing extensive research on protoss plasma shields. The results of his research allowed the reactor and tech lab to be combined into one facility, allowing for the functionality of both add-ons.[1]

The Terran Dominion eventually acquired the research to use tech reactors, as did the terran race as a whole. By 2506, the tech reactor was used almost exclusively over the previous two add-ons.

Game StructureEdit

Wings of LibertyEdit

Tech reactors are acquired in Hyperion's lab in Wings of Liberty for twenty-five protoss research points and are the alternative to the drop research.[1] This allows two of any unit to be built at once, even when that unit would normally require a tech lab. After acquisition, all starting tech labs and reactors in subsequent missions are replaced by tech reactors. Tech labs and reactors may no longer be built.

The tech reactor can be preferable to the Orbital Strike upgrade, where as the Orbital Strike only affects the barracks, the tech reactor upgrade affects the barracks, factory, and starport, allowing them to produce two tech lab-required units at a time. This is invaluable when mass-producing larger units such as battlecruisers and thors, especially later in the campaign.

In some missions where terrans are the primary majority, the tech reactors can be steal by simply destroying the building attached to it, be it enemy or ally and then attached yours on them. This also applies in Nova covert ops.

Upgrades and Abilities

All structures repair themselves to 50% life. All structure fires are automatically put out.

This all-in-one safety system automatically dispatches robotic drones to put out any fires and perform basic repairs on damaged structures. Although these drones are effective at doing basic repairs, they do not have a strong enough AI to perform the more delicate repairs needed to restore a structure past half life.[2]

Campaign Acquisition
Unlock Complete eleven missions.
Acquired from Hyperion armory for $90,000
SC2 Lab Tech Reactor Icon
Tech Reactor

Combines the tech lab and reactor into one add-on.[1]

Protoss plasma shields have finally given us the ability to fit the tech lab and the reactor into a single structure add-on. This new add-on, known as the tech reactor, replaces the old tech lab and reactor add-ons, and allows us to train two of any unit type simultaneously.

Campaign Acquisition
Acquired from Hyperion laboratory for 25 protoss research points

Left 2 DieEdit

In "Left 2 Die," Raynor's Raiders can buy tech reactors for 100 biomass points.[3]

Co-op MissionsEdit

In Co-op Missions, Rory Swann is able to build tech reactors once he reaches Level 10. Swann can also convert allied or enemy tech labs and reactors into tech reactors by landing his factories and starports next to them.


  1. 1.0 1.1 1.2 Blizzard Entertainment. StarCraft II: Wings of Liberty. (Activision Blizzard). PC. Protoss research (in English). 2010.
  2. Blizzard Entertainment. StarCraft II: Wings of Liberty. (Activision Blizzard). PC. Armory upgrades (in English). 2010.
  3. Blizzard Entertainment. StarCraft II. (Activision Blizzard) Map: Left 2 Die (in English). 2011.