Basic Solar Panel in Tech Reborn uses sunlight as a source of energy. It should be able to see the sun to generate energy.

This is the Tier 1 solar panel.

Basic Solar Panel generates 1E/t in the daytime and 0E/t in the nighttime respectively. It can store up to 2K of Energy.

Basic Solar Panel is used to craft Advanced Solar Panel

General information about Tech Reborn solar panels can be found here.