Plasma Refinery Complex The Plasma Refinery Complex was a large , triple - domed structure erected on the cliff face next to the Royal Palace of Naboo , in the city of Theed . Built to draw vast quantities of rare plasma out of the planet ' s core , the refinery complex included the Theed Hangar and the city ' s main power generator , as well as the headquarters of the Royal Naboo Security Forces . History . During the reign of the Naboo King Bon Tapalo , Damask Holdings , an entity within the InterGalactic Banking Clan , approached the Naboo with an offer of mining and exporting the plasma that was abundant in the planet ' s core . Despite trepidation at using primarily offworld businesses to jump - start the plasma industry , Tapalo agreed to the terms of Magister Hego Damask , as the Muun was planning to back the king ' s bid for reelection . When construction commenced , existing parklands just east of the Royal Palace were removed , and the adjacent Solleu River was rerouted to make room for the triple domes of the new refinery complex and the hangar facility . Constructed by Outer Rim Construction and Assembly , the complex was eventually fully operational and began producing plasma at an incredible rate . By King Ars Veruna ' s reign , Naboo had become a major player in the interstellar plasma energy market . However , the planet ' s plasma exports became a source of dispute with the Trade Federation , and a strenuous relationship with Magister Damask began to take its toll . Following the ouster of King Veruna , the citizens of Naboo and Senator Palpatine rallied behind a young girl named Padmé Naberrie and gave her the title Queen Amidala . The young monarch had just ascended to the throne when the Trade Federation invaded , blockading the system and taking the planet ' s populace hostage . After fleeing , the Queen did return to the planet , where she and Jedi Master Qui - Gon Jinn and Padawan Obi - Wan Kenobi led an infiltration mission to retake the planet . Amidala ' s forces used hidden tunnels to covertly enter Theed , emerging alongside the hangar building . While the security forces and the Jedi cleared the hangar , Sith apprentice Darth Maul stepped out of the refinery complex to challenge the Jedi . As the Queen and her loyal forces found another way to access the palace , the Jedi began to duel the Zabrak assassin , chasing him through the massive generator facility . After exchanging several blows , the Jedi forced Maul back through a series of laser gate s and into the chamber housing the generator ' s core . However , unknown to the Jedi , Maul had been in this complex before ; he had studied every service platform and checked the timing of the laser gates , while bringing them to the melting pit for the final part of their duel . In this small rotunda , Maul killed Master Jinn before being bisected at the waist by Qui Gon ' s lightsaber . But even as the Sith Lord fell into the melting pit below , he managed to survive this ordeal through the Force and his hatred , vowing revenge on Kenobi . He went down the reactor shaft and landed in water . He was then dumped into a container , which was taken via freighter to the junk world of Lotho Minor . He would not return to the known galaxy for twelve years . Years later , the same site was the arena of another deadly lightsaber duel , this time between one of the Galactic Empire ' s highest ranking Inquistors , Malorum and a former member of the now - extinct Jedi Order , Ferus Olin . During the duel , Olin was able to dislodge Malorum ' s lightsaber and send the Inquistior down the melting pit to his death . Layout . A triple - domed structure located on the cliff face of Theed , the Plasma Refinery Complex consisted of several distinct areas which saw a variety of use and function . Built along the banks of the Solleu River and the Virdugo Plunge , the refinery complex was a model of Neo - Classical design and employed a simple but elegant form . Constructed from large sandstone - like stone covered by a ribbed roof , the stone was embedded with a high - tensile durasteel support webbing while the roof was lined with blast - proof green plates to protect the structure from attack . Located alongside the complex was the city ' s main hangar , strategically placed within the same complex so that the plasma from the refinery could easily be pumped into the N - 1 starfighters of the Naboo Royal Space Fighter Corps . While the hangar had a separate entrance from the rest of the complex , a hallway connected the main flight deck with the complex ' s extracting shaft . Within the first of the three domed structures closest to the hangar was the seemingly bottomless extracting shaft . A hemispherical chamber with black paneled walls which constantly monitored and compensated for pressure changes , the shaft was crisscrossed by several rings of catwalks . A series of twelve evenly spaced acceleration shafts soared from the bottom of the pit and into the ceiling ; a thermal carbon membrane containing the plasma which had been forced out of the core and upward through vacuum suction . On the other side of the shaft was the city ' s power generator , located under the first building ' s ground floor . Above it was the facility ' s main activator and purification chamber , which in turn were beneath a corridor of laser gates . These doors , inspired by a Naboo legend regarding the gates holding back chaos , would lock into position to hold back potentially dangerous quantities of power outputs . Beyond the corridor was the generator ' s core , a massive shaft plummeting into the depths of the massive reactor . Along the sides of the smooth shaft were high - energy particle coils which were employed when plasma slough needed to be curtailed . The massive drum - shaped holding tank which occupied the central building stored mass quantities of refined plasma . The Naboo , cautious of shortages or double - crossing by Damask Holdings or the Trade Federation , held mass quantities of plasma in reserve in case of increased spacecraft use . At the top of the tank , a recirculation lid reduced the oxygen levels in the chamber to maintain the vacuum in the tank . Behind the scenes . The Plasma Refinery Complex first appeared with the release of . The layout of the facility changes between the film ' s 1999 video game , the 2000 video game " , " and the 2001 video game " . "