Luminous objects are objects that emit (give out) light. In our solar system, the sun is the only luminous object. All of the planets and moons reflect light (the light from the sun bounces off them) and absorb light but they don't emit light, so we say they are non-luminous.

 

The three main types of solar power systems

 

• On-grid - also known as a grid-tie or grid-feed solar system.

• Off-grid - also known as a stand-alone power system (SAPS)

• Hybrid - grid-connected solar system with battery storage.