Bombing of Coruscant ' s central power distribution grid / Legends In 21 BBY , the Confederacy of Independent Systems executed a bombing of a crucial Coruscant power generator in an attempt to stop a peace treaty with the Galactic Republic proposed by Confederate Senator Mina Bonteri . The ecumenopolis was infiltrated by demolition droids , which took out several Coruscant power generator engineers and planted themselves on the wall as bombs . The droids then exploded , crippling all electrical sources on Coruscant , which resulted in power outages and fires as well as civilian deaths . As a consequence of the attack , the Galactic Senate passed a bill that de - regulated the banking conglomerates , also rejecting the initiative to end hostilities between the two belligerents . The peace attempt was later formally withdrawn by Count Dooku . Prelude . In 21 BBY , Padmé Amidala , who represented the Chommell sector in the Galactic Senate , visited Confederate Senator Mina Bonteri on Raxus , together with Jedi Padawan Ahsoka Tano . Bonteri recommended the start of peace negotiations in the Confederacy ' s legislative body . The Separatist Parliament approved this initiative . After Padmé returned and announced the same proposal in the Galactic Senate , Count Dooku became alarmed , and tasked General Grievous with disturbing the process . The mission . Demolition droids were sent to execute the operation . These machines were capable of transforming into sweeper / maintenance units to infiltrate a location or combat units armed with two blaster cannons to secure a demolition points . Two such droids could connect into a bomb which exploded after a given time . The units , camouflaged as Coruscant Sanitation Department sweeper droids , exited a Taylander shuttle on Coruscant and proceeded towards their target : the power generator situated 5 , 000 levels below the ecumenopolis ' surface . While en route , they encountered CC - 1010 and two other members of the Coruscant Guard , who were checking the identification of a group of Coruscant power generator engineers . The droids displayed their holographic permission , which stated that their task was " generator maintenance " . The clones allowed them through , with CC - 1010 even showing them the correct way , which allowed Grievous ' machines to travel to their target . Meanwhile , Padmé Amidala and Ahsoka Tano visited Supreme Chancellor Palpatine in his office , attempting to persuade him to accept the Confederacy ' s peace offer so that no more orders for clones would have to be paid . The Chancellor , however , replied that their past efforts at ending the conflict had been fruitless , as the Separatists rejected their previous proposals , but agreed to put the vote to the floor after Padmé told him that this particular suggestion originated from her old mentor , Mina Bonteri . As the dialogue proceeded , the demolition droids reached the generator ' s vicinity . After one of the engineers standing near the entrance of the control room questioned the need for their presence , the droids transformed into combat mode and began to slaughter the personnel in and around the area without loss , connecting into bombs as soon as they secured the room . As the Separatist machines killed the engineers operating the generator , Senators Padmé Amidala and Bail Organa were addressing the Galactic Senate , stating that there was no need for deregulating the banks or ordering further clones due to the start of the negotiations . Onaconda Farr proposed a vote on the matter , which Vice Chair Mas Amedda accepted ( with the subject being " lifting regulations on the Banking Clan " ) , and the Senators were allowed to enter their vote . Only seconds later , the process was interrupted by the blackout caused by the explosion of the demolition droids , which destroyed the generator . Large areas of Galactic City turned dark in moments , and fires broke out in the vicinity of the Senate Building . The Senate ' s red emergency lighting turned on , and Orn Free Taa , Senator of Ryloth shouted that they were under attack . Soon , Senator Gume Saam announced that the attack had been confirmed as a Separatist one , and Halle Burtoni , Senator of Kamino proposed to vote on the bill to deregulate the banks . Padmé attempted to stop the process , but to no avail , as more and more Senators began to support Burtoni ' s proposal . Supreme Chancellor Palpatine approved the suggestion , thus ending the debate over the subject . Aftermath . The regulations on the InterGalactic Banking Clan were lifted in order to finance more troops . Padmé Amidala ' s desperate resistance to this act turned the general mood against her . Furthermore , Count Dooku contacted the Galactic Senate , stating that Mina Bonteri had been killed in a recent Republic attack — in fact , she had been murdered by Dooku ' s agents — and officially withdrew the Confederate Senate ' s peace proposal .