But solar energy usually refers to ways the sun's energy can be used to directly generate heat, lighting, and electricity.
(solar energy; refers; to ways; T:usually) (the sun's energy; can be used; to directly generate heat, lighting, and electricity) (the sun's energy; to directly generate; heat, lighting, and electricity)
solar energy the sun's energy the sun's energy
refers can be used to directly generate
to ways T:usually
to directly generate heat, lighting, and electricity
heat, lighting, and electricity