Question: what are the four main uses of solar energy?
Answer: 7 Uses of Solar Energy. July 12, 2018. ...  Solar Electricity. This is one of the solar energy applications that has gained a lot of momentum in recent years. ...  Solar Water Heating. Uses for solar energy extend to water heating systems. ...  Solar Heating. ...  Solar Ventilation. ...  Solar Lighting. ...  Portable Solar. ...  Solar Transportation.