Powered by sunlight (5)
I believe the answer is:
solar
(Other definitions for solar that I've seen before include "Sun-powered" , "Of the sun, as ray or panel" , "Sort of power" , "room" , "Pertaining to the sun" .)
I believe the answer is:
solar
(Other definitions for solar that I've seen before include "Sun-powered" , "Of the sun, as ray or panel" , "Sort of power" , "room" , "Pertaining to the sun" .)