Tech Tree / Solar array solar-array Solar array Subsystem Semi-native TRL Mars 7 / 9 Energy intensity — Required by 1 Requires 3 Inputs: Sunlight Built from: PV panel Aluminium stock Outputs: Electricity Requires Inputs Sunlight Physical law Built from PV panel Component Aluminium stock Intermediate Required by Power grid Subsystem · input Participates in loops power-metals-loop