Poseidon Energy

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For the location in Fallout 4, see Poseidon Energy (location).
Poseidon Energy
Poseidon Energy logo.png
Company data
IndustryEnergy and weapons research and development
CountryUnited States of America
LocationsControl Station Enclave
Navarro Refinery
Atomic Powerplant № 5
PMV Valdez
Helios One
Poseidon Energy
Poseidon Energy turbine No.18-F
Poseidon Reservoir
Poseidon Energy Plant WV-06
Poseidon Power Substation PX-01
Poseidon Power Substation PX-02
Poseidon Power Substation PX-03
Van BurenGametitle-VB.png Eagle Rock mining complex
Corporate connections
SubsidiariesPoseidon Gasoline
Poseidon Oil
Hermes Communications, Inc.
Van BurenGametitle-VB.png Prometheus Coal
Van BurenGametitle-VB.png J.E. Sawyer's Fallout RPGGametitle-JES.png Agricola
Van BurenGametitle-VB.png Greenway Hydroponics

Begin your Odyssey with us.

Poseidon Energy was incontestably the most powerful energy conglomerate on Earth prior to the Great War. If it produced energy, Poseidon Energy either made it, acquired it, or refined it. Outside of energy, Poseidon also produced for the United States Military and was the chief producer of Enclave technology before the war.

Background[edit | edit source]

Poseidon Energy was an umbrella corporation with its fingers in virtually all known forms of renewable and non-renewable power sources on both the east and west coasts of America,[1] as well as research and development of new, more powerful weapons through their subsidiaries, so long as they remained profitable. PoseidoNet was a data transfer system that provided instantaneous communication between various Poseidon facilities including Atomic Powerplant № 5, Control Station Enclave, Navarro, Helios One, and other locations throughout the United States and possibly the world.[2]

Though much of the pre-War United States knew of Poseidon, few were aware that several Poseidon-owned companies were given lucrative defense contracts by the U.S. government – or rather, by Enclave members working as lobbyists to gain those contracts.[2] However, most of Poseidon's most promising research projects never reached their final stages.[3][4]

Many of Poseidon's most promising projects never reached their final stages. After the Great War, Poseidon no longer existed as a real force in the post-atomic world. However, technology scavengers like the Brotherhood of Steel and the Enclave still tried in vain to decipher Poseidon's plans and either confiscate this technology or turn them into working models, respectively.

Subsidiaries[edit | edit source]

One of the many derelict gas stations operated directly by Poseidon

The corporation operated a number of daughter companies, which focused on different aspects of the global energy market:

  • Petró-Chico was "Un Amigo De Poseidon Energy,", a Mexico-based oil refinement and distribution company.
  • Poseidon Oil focused on petroleum extraction and processing, although it also invested in other energy resources, including nuclear power.
  • Poseidon Gasoline was Poseidon's division focusing on distributing gasoline and operating gas stations.
  • Gray paragraphs are based on Van Buren and were not confirmed by primary sources Prometheus Coal focused on coal extraction.
  • Gray paragraphs are based on Van Buren and were not confirmed by primary sources Agricola was a subsidiary dedicated to uranium extraction.

Projects[edit | edit source]

Civilian[edit | edit source]

Military[edit | edit source]

Behind the scenes[edit | edit source]

  • Poseidon was the Greek god of the sea as well as horses and earthquakes. His weapon and symbol is the trident. Poseidon's projects often used codenames drawn from Greek mythology.
  • The Odyssey was a Greek epic poem written by Homer, it depicted the adventures of Ulysses, or Odysseus, after the Trojan War.

Gallery[edit | edit source]

Appearances[edit | edit source]

Poseidon Energy or its divisions are mentioned in Fallout, Fallout 2, Van Buren, Fallout: New Vegas, Fallout 4, and Fallout 76.


  1. Danse: ""Poseidon Energy was one of the largest power companies on the East Coast. I heard they were trying to buy out Mass Fusion right before the war began.""
    (Danse's dialogue) Note: location comment; Poseidon Energy, generator room - the part past the raider defenses.
  2. 2.0 2.1 PoseidoNet in Fallout 2 identifies the Oil Rig as "Control Station ENCLAVE" along with several other Enclave sites, suggesting a link between Poseidon Energy and the Enclave.
  3. Hidden Valley bunker terminals; Terminal, Journal Entry 745
  4. Reid Underwood's terminal details the MPLX Novasurge, the prototype of the unnamed plasma pistol that was almost exclusive to the Enclave military forces.
  5. Thunder Mountain Power Plant terminals
  6. Callville Bay sign
Enclave Symbol (Fallout 3).png
Enclave Symbol (Fallout 3).png