History Main / ExtradimensionalPowerSource

* All powers in ''{{Literature/Worm}}'' are extradimensional in nature, drawing energy from alternate Earths to fuel them. While it is possible to "drain the well" and thus no longer have a power, this is exceedingly rare (given the setting, you are much more likely to die first).

* One of the novels in ''Literature/TheLaundryFiles'' discusses a being that uses other dimensions this way to maintain its own existence. It uses up ''all'' of the other dimension's energy, and attempts to do this to our world.

* This is how [[ComicBook/MsMarvel2014 Kamala Khan's]] powers work as her powers are connected to a special gateway in which ''all Kamalas'' through time and space.

* In ''WesternAnimation/LegendOfKorra'', the Spirit Vines, which comes from the Spirit World, can be used as a new energy source. Kuvira mostly uses them to power her weapons.

The laws of thermodynamics and conservation of mass prove there's a finite amount of energy in this universe. It can never been created or destroyed, but just change form. Of course, there AintNoRule that says you can't bring in energy from somewhere else to solve your needs. Enter the extradimensional power source, which is ExactlyWhatItSaysOnTheTin: utilizing the energy from another reality for whatever purpose one might have in mind for it.

Depending on the work, the extradimensional energy can be of magical, technological, cosmic, or even quantic nature. The later often happens in sci-fi works because otherwordly particles are convenient AppliedPhlebotinum. Using energy from another world frequently has unforeseen consequences, because of how it may interact with a different world.

* In ''Manga/DeliciousInDungeon'', this is considered one of the Forbidden Magic. It is explained that there is a separate universe filled with limitless energy, and the magic brings that energy to the world. The dungeon is also said to be created with a similar magic.

* One of the novels in ''Literature/TheLaundryFiles'' discusses an being that uses other dimensions this way to maintain its own existence. It uses up ''all'' of the other dimension's energy, and attempts to do this to our world.

* ''VideoGame/Doom2016'': Mankind was facing an energy crisis and found an energy source in syphoning energy from {{Hell}}. Extracting this "Argent energy" is fraught with health risks [[note]] One scientist developed a brain tumour and devoted himself to studying BrainUploading to escape death, which worked. Another developed debilitating scoliosis and developed an exoskeleton to remedy this, which put her in perpetual pain, but functional.[[/note]], but using it once extracted and purified is perfectly safe. Of course, beyond the health risks is the fact that you've opened a HellGate to syphon it, and demons can and will pour through every so often. The plot is kickstarted by one of these demons offering one of the top scientists a [[DealWithTheDevil deal with the literal devil]].

* In ''WesternAnimation/LegendOfKorra'', the Spirit Vines, which comes from the Spirit World, can be use as a new energy. Kuvira mostly uses them to power her weapons.

* One of the explanations given out for ''ComicBook/Cyclops''' power is that his eyes are essentially a gateway to a non-Einsteinian dimension full of energy that translates as concussive force when entering this one. Or, as the fans would memetically summarize, "PUNCHES! FROM THE PUNCH DIMENSION!"

** Zero-Point Modules draw zero-point energy from a pocket dimension in subspace, albeit one small enough that the Expedition has a habit of depleting [=ZPMs=] shortly after finding them. The Ancients tried a reactor that drew energy from this universe but exotic particles killed everyone on the planet, and when [=McKay=] tried to "fix" it he blew up a solar system by accident - [[InsistantTerminology five sixths]].

* In the film adaptation of ''Film/{{Doctor Strange|2016}}'' magic is powered by the energy of other dimensions. This contrasts with the comics where the energy comes from beings from other dimensions.

* In ''Manga/DungeonMeshi'', this is considered one of the Forbidden Magic. It is explained that there is a separate universe filled with limitless energy, and the magic brings that energy to the world. The dungeon is also said to be created with a similar magic.

* Several [[''Wiki/SCPFoundation'' SCPs]] rely on (or are) extradimensional power sources. For example, SCP-3304 shows the drastic consequences when an extradimensional being tries to sell its own world's energy to ours.

* Several [[''Wiki/SCPFoundation'' SCPs rely on (or are) extradimensional power sources. For example, SCP-3304 shows the drastic consequences when an extradimensional being tries to sell its own world's energy to ours.

* In the ''WesternAnimation/RickAndMorty'' episode "The Ricks Must Be Crazy", it is revealed that Rick's spaceship is powered by a miniature universe inside the battery: the people of the "microverse" generate electricity using foot-pedals, with a portion of the power being redirected towards the battery. Unfortunately, this stops working when a scientist of the microverse discovers how to create his own "miniverse" and generate free power without having to work the pedals. The inhabitants of the miniverse then create a teenyverse for the same purposes. In the end, Rick manages to restore his battery's power by giving the microverse's inhabitants an ultimatum: either they go back to using the pedals, or he gets rid of his non-functional battery (and destroy their universe in the process).

** Zero-Point Modules draw zero-point energy from a pocket dimension in subspace, albeit one small enough that the Expedition has a habit of depleting [=ZPMs=] shortly after finding them. The Ancients tried a reactor that drew energy from this universe but exotic particles killed everyone on the planet, and when [=McKay=] tried to "fix" it he blew up a solar system by accident.

* The Fade in ''VideoGame/DragonAge'' is the source of magic in the world of Thedas. It's a metaphysical realm where the spirits of the dead go and that most can fleetingly enter when sleeping, but only Mages can remain fully conscious when they visit. Unfortunately, the use of magic can make Mages targets for the demons that reside in the Fade.

* ''VideoGame/Doom2016'': Mankind was facing an energy crisis and found an energy source in syphoning energy from Hell. Extracting this "Argent energy" is fraught with health risks [[note]] One scientist developed a brain tumour and devoted himself to studying BrainUploading to escape death, which worked. Another developed debilitating scoliosis and developed an exoskeleton to remedy this, which put her in perpetual pain, but functional.[[/note]], but using it once extracted and purified is perfectly safe. Of course, beyond the health risks is the fact that you've opened a HellGate to syphon it, and demons can and will pour through every so often. The plot is kickstarted by one of these demons offering one of the top scientists a [[DealWithTheDevil deal with the literal devil]].

* In the film adaptation of ''Film/{{Doctor Strange2016}}'' magic is powered by the energy of other dimensions. This contrasts with the comics where the energy comes from beings from other dimensions.

* In the film adaptation of ''Film/DoctorStrange'' magic is powered by the energy of other dimensions. This contrasts with the comics where the energy comes from beings from other dimensions.

* Probably the most famous example is Creator/DCComics' Speed Force, which is an extradimensional energy field that exists outside space and time and grants all speedsters their abilities.

** The two-parter "[[http://tvtropes.org/pmwiki/pmwiki.php/Recap/DoctorWhoS28E12ArmyOfGhosts Army Of Ghosts]]" and "[[http://tvtropes.org/pmwiki/pmwiki.php/Recap/DoctorWhoS28E13Doomsday Doomsday]]" has Torchwood attempt to harness the energy of an opening in the fabric of spacetime 600 feet above London. They believe that this will make Britain truly independent. As a consequence, the ghosts start coming through...
** The interior of the TARDIS exists within another dimension. "[[http://tvtropes.org/pmwiki/pmwiki.php/Recap/DoctorWhoS34E9Flatline Flatline]]" features the [[EldritchAbomination two-dimensional]] Boneless, who keep leaching the [=TARDIS's=] dimensional energy and causing the BiggerOnTheInside part to seep away and by extension the exterior to shrink.

** The episode "[=McKay=] and Mrs Miller" has an [[InvertedTrope inversion]] - the team attempts to create a stable version of the reactor by venting its exotic particles into a parallel universe, under the logic that it has only a MillionToOneChance of being inhabited. Naturally, an alternate version of Dr. [=McKay=] soon shows up, who politely asks his counterpart to stop destroying his universe.

* The Fade in ''VideoGame/DragonAge'' is the source of magic in the world of Thedas. It's a metaphysical realm where the spirits of the dead go and that most can fleetingly enter when sleeping, but only Mages can remain fully conscious when they visit. Unfortunately, much like the ''Warhammer'' example above, the use of magic can make Mages targets for the demons that reside in the Fade.

* Occurs accidentally in ''[[Webcomic/RoomiesItsWalkyJoyceAndWalky It's Walky!]]'': the main faction of human villains arrived from an alternate universe, and shunted the leftover energy created by their portal into a random tree branch that was nearby. This not only accelerated the heat death of their home universe, it also created the Power Booster Rod, which ends up being a massive ChekhovsGun for the story.

* In ''Literature/TheWheelOfTime'' history, researchers in the Age of Legends identified an infinite extradimensional energy source that could power a new form of Channeling, the setting's FunctionalMagic. Unfortunately, the power source is the GodOfEvil, and creating a hole into its [[SealedEvilInACan prison outside Creation]] ends very poorly for everyone.