Power grid Power grid or power transfer grid was an informal term for a system that sent energy throughout a starship , facility or even a planet . These grids could make use of electricity , electro - plasma or any number of energy sources . The Federation made use of a power grid known as the EPS , the primary energy distribution system on their ships and stations . In 2152 , Jonathan Archer reluctantly shut down the power grid aboard in preparation for an approaching neutronic wavefront . T ' Pol assured him it was necessary in order to prevent a possible overload . ( ) A Xindi - Insectoid shuttlecraft discovered in 2154 was found to have routed almost half of its power grid to structural integrity . ( ) In 2369 , a power transfer grid failed on Deep Space 9 , and the upper docking pylon s were disabled as a result . ( ) The same year Chief Miles O ' Brien accessed the power grid of the security check point four on the promenade to sabotage them . ( ) In 2371 , Lieutenant Joseph Carey came into conflict with B ' Elanna Torres in engineering over the ' s power grid . Torres wanted to realign the lateral plasma conduit , which Carey told her would cause an overload in the power grid . ( ) Late that year , a Changeling impersonating Julian Bashir claimed as Bashir to be connecting a diagnostic console to the medical bay ' s power grid aboard the when confronted by O ' Brien . ( ) In 2372 , Stevens and Muniz routed the output of the " Defiant " s phaser generator through the ship ' s secondary power grid . This was done in order to use the deflector array as a phaser emitter . ( ) Soon after , Admiral Leyton had Red Squad sabotage the computer s of the Division of Planetary Operations causing Earth ' s power grid to fail . ( ) " In an alternate timeline in 2374 , a Krenim attack destroyed " Voyager " s power grid on Deck 11 . Over two months later it was operating at thirty - two per cent efficiency , with Harry Kim predicting this could be increased to fifty per cent within a few days . " ( ) Later that year , " Voyager " s power grid took a direct hit during a battle with Kovin . ( ) Not long after , Seven of Nine expressed concern that damage to the power grid from combat with Allos ' species could overload the harmonic resonance chamber in cargo bay 2 . ( ) The Orion Syndicate planned to interrupt the power grid of the Klingon embassy on Farius Prime and assassinate the ambassador before the backups came online . ( ) Upon entering an energy barrier of a planet in the Rutharian sector , the " Chaffee " s power grid began to fail . ( ) The Borg cube which fought in the Battle of Sector 001 had heavily damage of its outer hull and Data also noted that it had fluctuations in its power grid . ( ) " In an alternate timeline created in 2375 , " Voyager " was eventually discovered on the surface of a class L planet with its power grid destroyed . " ( ) " Voyager " took a direct hit to the power grid during a firefight with Ven ' s species . ( ) In 2375 in the mirror universe , Rom was able to take the power grid of the Regent ' s flagship offline , leaving it open to attack by the . ( ) In 2376 , Tom Paris asked Harry Kim to reconfigure " " ' s power distribution grid , in order to prevent blowing more power cells , but fatigue stopped them from proceeding . ( )