This monograph provides insights into alternative energy sources and clean energy. Solar energy, the source of all energy, solar energy, solar panels, solar furnaces, disadvantages of solar energy, wind energy, potential of wind energy in Uzbekistan, disadvantages of wind energy, hydropower, tidal energy, geothermal energy, bioenergy, their advantages and disadvantages brief information is given. In addition, the types of energy extraction are analyzed. This monograph can be used by teachers, students, and scientific and technical staff of higher education and vocational education in undergraduate and graduate specializations of renewable energy sources.