A liquid immersion cooling system includes a tank defining a tank interior configured to receive electronic components (e.g., servers) and a thermally conductive dielectric liquid to cool the electronic components. The liquid immersion cooling system also includes a power shelf external to the tank interior, where the power shelf includes a converter configured to receive an alternating current (AC) power supply and convert the AC power supply to a direct current (DC) power supply. The liquid immersion cooling system also includes a DC bus configured to route the DC power supply from the power shelf, into the tank interior, and to the electronic components.