This page of the Biomutant guide contains a walkthrough of The Solar Mirror Sight side quest. We have described everything you need to do in order to complete the quest and earn the rewards.
Starting the quest
How to start: Talk to a man in town - Namby.
Reward: 100 XP.
To start the quest, you need to talk to the man by the pipe. He will mention a solar mirror to can give you an energy boost.