Here we explore possible sources of heavy industry power on the Icy Moons. - Titan Power: fission baseload + scalable **wind** = best mixed grid; hydrocarbons feed chemical industry. - Ganymede Power: fission + **big solar farms** = strong path to multi-MW plants; better raw minerals. - Enceladus Power: fission + **vent-thermal** fits an underwater settlement; materials supply chain is leaner.