A watt (abbreviation W) was a unit of electrical power equal to one joule per second.
Comparative list of electrical power[]
- Milliwatt = 0.001 watts
- 20 milliwatts: The internal sensors aboard a Constitution-class starship were set to detect any scan field set at or above 20 milliwatts. (DS9: "Trials and Tribble-ations")
- Deciwatt = 0.1 watts
B'Elanna Torres wanted to siphon every last deciwatt of energy from the plasma network to the deflector. (VOY: "Fair Haven")
- 300 deciwatts (=30 watts): Janeway spoke of the holodeck character Michael Sullivan as being a 300 deciwatt holodeck program. (VOY: "Spirit Folk")
- Watt
- 125.99 watts and 500 watts: This was the radiated power and TX power of the transmitters, respectively, used by the USS Shenzhou for Michael Burnham's reconnaissance mission to the Beacon of Kahless. (DIS: "The Vulcan Hello")
- 5.34×1041 watts: The Gamma Erandi Nebula expended 5.34×1041 watts of energy, which was well within the norm for this type of phenomenon. (TNG: "Ménage à Troi")
The value exceeds would be 17 orders of magnitude above the yattawatt.
- Megawatt = 1 million watts
- 1.05 megajoules per second: A Starfleet phaser rifle's energy cell had a power output of 1.05 megajoules per second. (TNG: "The Mind's Eye")
- 20 megawatts: For Crewman Daniels' tracking equipment, which he used to tie into Enterprise's sensor grid, to work properly, he needed another 20 megawatts routed to the system. (ENT: "Cold Front")
- 23 megawatts: Doctor Nel Apgar used a 23 megawatt lambda field generator for his experiments with Krieger waves. (TNG: "A Matter of Perspective")
- 30 megawatts: A Borg alcove required over 30 megawatts of power to function. (VOY: "Dark Frontier")
- 40 megawatts: In an initial attack made on the USS Enterprise-D by the Delta Rana warship, it fired jacketed streams of positrons and antiprotons, firepower equivalent to 40 megawatts, which caused no damage to the Enterprise. (TNG: "The Survivors")
- 700 megawatts: The high-energy disruptor weaponry used by Cardassian warships in 2367 had an estimated coherent output of 700 megawatts and a 340 kHz rapid nadion effect. (TNG: "The Wounded" display graphics)
- 900 megawatts: As an artificial satellite discovered around a penal moon in the Gamma Quadrant approached the USS Yangtzee Kiang, it began to establish a significant power build-up. Power readings went from 600 megawatts to 900 megawatts before the satellite fired at the runabout. The resultant blast knocked out the ship's shields, forward thrusters, and impulse engines. (DS9: "Battle Lines")
- Gigawatt = 1 billion watts
Montgomery Scott was sure he could get a few extra gigawatts out of the shields of the USS Jenolan to support his plan to use the ship to prop open the doors of a Dyson sphere. (TNG: "Relics")
Captain Kathryn Janeway reroute every spare gigawatt to USS Voyager's shields to protect the ship from the resulting explosion caused when they fired at a metreon gas cloud. (VOY: "Think Tank")
- 4.2 gigawatts: The reactor required to power the Federation "duck blind" on Mintaka III was capable of producing 4.2 gigawatts. A reactor this size was required to power the hologram generator used to hide the blind, but could also power a small phaser bank or a subspace relay station. (TNG: "Who Watches The Watchers")
- 50 gigawatts: Doctor Tolian Soran erected a 50 gigawatt force field on Veridian III around the equipment he intended to use to destroy the Veridian sun. (Star Trek Generations)
- 60 gigawatts: The margin of error when saving the atmosphere of Penthara IV was no more than 0.06 terawatts. (TNG: "A Matter Of Time")
- 200 gigawatts: The quantum beacon mounted on board Enterprise NX-01, used to reveal both a Suliban stealth cruiser and cloaked Romulan mines, had an output of 200 gigawatts. (ENT: "Shockwave")
- 400 gigawatts: In its second attack on the USS Enterprise-D, the Delta Rana warship encountered at Rana IV fired 400 gigawatts of particle energy, causing superficial damage to the ship but effectively taking down its shields. A second shot took out the rest of the Enterprise's shields and caused thermal damage to the hull. (TNG: "The Survivors")
- 5 million gigawatts (=5 petawatts): The Borg exoskeleton in Seven of Nine's arm could withstand 5 million gigawatts of power. (VOY: "Revulsion")
- 12.75 billion gigawatts (=12.75 exawatts): In 2369, the generation of 12.75 billion gigawatts of energy was harnessed (over an unspecified time period) in the warp core aboard a Galaxy-class starship. (TNG: "True Q")
- Terawatt = 1 trillion watts
In 2365, the command headquarters of Daled IV utilized a communication system that originated from a terawatt source, which was necessary to penetrate the planet's atmosphere. According to Commander William T. Riker, "that's more power than our entire ship could generate," meaning that they lacked the ability to respond to the communique. (TNG: "The Dauphin")
By 2368, the USS Enterprise-D was stated as having a powerful matter/antimatter warp reaction system that had an output that was normally capable of kicking plasma up into the terawatt range. (TNG: "The Masterpiece Society")
In 2374, the Entharan weapons dealer Kovin introduced Tom Paris and Seven of Nine to a terawatt powered particle beam rifle. (VOY: "Retrospect")
- 3.2 terawatts: The Cytherian probe encountered by the Enterprise-D created an energy field around itself at an intensity beginning at 3.2 terawatts and continued to increase. The shields of a Federation shuttlecraft could not provide sufficient protection for its computer from an energy field of that intensity. (TNG: "The Nth Degree")
- 4 terawatts: The ancient network of relay stations claimed by the Hirogen, powered by quantum singularities of approximately a centimeter in diameter, had an output of 4 terawatts of energy. (VOY: "Hunters")
- 5 terawatts: For Voyager to increase the radiogenic resolution in its long-range sensors, it was necessary to route at least another 5 terawatts to the sensor array. (VOY: "Good Shepherd")
- 60 terawatts: The Pathfinder Project used a 60 terawatt tachyon beam, directed toward a class B itinerant pulsar, to create the micro-wormhole necessary to establish contact with the Delta Quadrant. (VOY: "Pathfinder")
- 9 million terawatts (=9 exawatts): The Ba'Neth outpost in Grid 216 was hidden by a 9 million terawatt cloaking field. (VOY: "Riddles")