Power relayCanonLegendsInfinitiesPower relays were stations used to transfer the power from primary power sources. Sources Star Wars: The Last Jedi: Incredible Cross-SectionsStar Wars Complete Vehicles, New EditionAppearancesThe High Republic: The Rising Storm (Unknown)Unknown UnknownNoneThe High Republic: The Rising Storm audiobook (Unknown)Unknown UnknownNoneThe High Republic: Temptation of the Force (Mentioned only) (Unknown)Unknown UnknownNone"The Witness" — From a Certain Point of View: The Empire Strikes Back (Unknown)Unknown UnknownNone"The Witness" — From a Certain Point of View: The Empire Strikes Back audiobook (Unknown)Unknown UnknownNone"Better the Devil You Know, Part I" — Star Wars Adventures (2017) 1 (First mentioned) (Unknown)Unknown UnknownNone