Concentrated Gas Cloud hotspots are useful for those who want to make money crafting high-tech materials that require Compressed Atmospheric Gas, or if an Oxygen hotspot is found, to collect it that way rather than using a dedicated Oxygen Harvester (which needs refueling, whereas industrial Gas Extractors only need power).

Place a Gas Extractor on a Concentrated Gas Cloud hotspot and power it to extract large amounts of gas of one type. Gas harvesters need 50kPs power each to operate, but their advantage is they only need power—you don't have to keep coming back to refuel it as the Atmosphere Harvester or Oxygen Harvester device requires.

Gas hotspots can produce 250, 500, 750, and 1000 units per cycle, per extractor at C, B, A, and S potential, respectively. Within a gas hotspot, you can place as many Gas Extractors as you like, subject only to base complexity limits. Gas density as shown in the Survey Device will be 100, 200, 300, or 400, corresponding to classes C, B, A, and S potential. The further away from the hotspot, the fewer units per cycle can be collected.

Gas Extractors have a capacity of 250 units, but they can be connected via supply pipes to Supply Depots which hold an additional 1000 units each.

At a certain point of building more & more extractors, they begin to see diminishing returns. This helps to prevent massive, lag or crash inducing mining facilities.