The term 'ENERGY TYPE' can be summarized by two crossword solutions: SOLAR (5 letters) and ATOMIC (6 letters). SOLAR energy is a type of renewable energy that is generated from the sun's rays. It is used to generate electricity, heat water, and power homes and businesses. ATOMIC energy is a type of non-renewable energy that is generated from the splitting or fusing of atoms. It is used to generate electricity in nuclear power plants.