Which Branch is more suitable for Solar Energy industry ?

[Lakemom]

Actually, Mech Engineer is often also asked for. My son has an interest in Solar.

A bachelor’s degree in mechanical engineering or electrical engineering is typically required for solar engineering positions. In some areas, more advanced certification could be required. Degrees in industrial engineering, chemical engineering, and computer software engineering may also be helpful.

from http://www.environmentalscience.org/career/solar-engineer