Industrial 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 a Tier 3 solar panel which makes it four times more efficient than it's Tier 2 predecessor.

Industrial Solar Panel generates 64E/t in the daytime and and 2E/t in the nighttime respectively. It can store up to 128K of Energy.

Panel's energy output can be controlled with redstone.

Industrial Solar Panel is used to craft Ultimate Solar Panel

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