A fault-tolerant power plant system, including: a power generation module PGM including a modular nuclear reactor, wherein the PGM includes a first group of loads and a second group of loads that are configured to operate the modular nuclear reactor, and wherein the PGM is configured to generate an alternating current AC signal, a power distribution module PDM electrically coupled to the PGM, the PDM comprising: a plurality of alternating current AC busses that are configured to receive at least a portion of the AC signal generated by the PGM and provide an input AC signal to the PDM; a first direct current DC bus that is directly coupled to the first group of loads; a second DC bus that is directly coupled to the second group of loads; a first channel having a first rectifier and a first battery, wherein a first one of the plurality of AC busses is configured to provide the input AC signal to the first channel, and wherein the first rectifier is configured to rectify the input AC signal and selectively provide a first DC signal to the first DC bus when the first one of the plurality of AC busses provides the input AC signal to the first channel, the first DC signal including a first portion of the rectified input AC signal, and the first battery is configured to selectively provide the first DC signal to the first DC bus when the plurality of AC busses do not provide the input AC signal to the first channel, the first DC signal including energy stored in the first battery; and a second channel having a second rectifier and a second battery, wherein a second one of the plurality of AC busses is configured to provide the input AC signal to the second channel, and wherein the second rectifier is configured to rectify the input AC signal and selectively provide a second DC signal to the second DC bus when the second one of the plurality of AC busses provides the input AC signal to the second channel, the second DC signal including a second portion of the rectified input AC signal, and the second battery is configured to selectively provide the second DC signal to the second DC bus when the plurality of AC busses do not provide the input AC signal to the second channel, the second DC signal including energy stored in the second battery. a power generation module PGM including a modular nuclear reactor, wherein the PGM includes a first group of loads and a second group of loads that are configured to operate the modular nuclear reactor, and wherein the PGM is configured to generate an alternating current AC signal, a power distribution module PDM electrically coupled to the PGM, the PDM comprising: a plurality of alternating current AC busses that are configured to receive at least a portion of the AC signal generated by the PGM and provide an input AC signal to the PDM; a first direct current DC bus that is directly coupled to the first group of loads; a second DC bus that is directly coupled to the second group of loads; a first channel having a first rectifier and a first battery, wherein a first one of the plurality of AC busses is configured to provide the input AC signal to the first channel, and wherein the first rectifier is configured to rectify the input AC signal and selectively provide a first DC signal to the first DC bus when the first one of the plurality of AC busses provides the input AC signal to the first channel, the first DC signal including a first portion of the rectified input AC signal, and the first battery is configured to selectively provide the first DC signal to the first DC bus when the plurality of AC busses do not provide the input AC signal to the first channel, the first DC signal including energy stored in the first battery; and the first rectifier is configured to rectify the input AC signal and selectively provide a first DC signal to the first DC bus when the first one of the plurality of AC busses provides the input AC signal to the first channel, the first DC signal including a first portion of the rectified input AC signal, and the first battery is configured to selectively provide the first DC signal to the first DC bus when the plurality of AC busses do not provide the input AC signal to the first channel, the first DC signal including energy stored in the first battery; and a second channel having a second rectifier and a second battery, wherein a second one of the plurality of AC busses is configured to provide the input AC signal to the second channel, and wherein the second rectifier is configured to rectify the input AC signal and selectively provide a second DC signal to the second DC bus when the second one of the plurality of AC busses provides the input AC signal to the second channel, the second DC signal including a second portion of the rectified input AC signal, and the second battery is configured to selectively provide the second DC signal to the second DC bus when the plurality of AC busses do not provide the input AC signal to the second channel, the second DC signal including energy stored in the second battery. the second rectifier is configured to rectify the input AC signal and selectively provide a second DC signal to the second DC bus when the second one of the plurality of AC busses provides the input AC signal to the second channel, the second DC signal including a second portion of the rectified input AC signal, and the second battery is configured to selectively provide the second DC signal to the second DC bus when the plurality of AC busses do not provide the input AC signal to the second channel, the second DC signal including energy stored in the second battery.