Nonconventional energy or renewable sources of energy is defined as the sources of energy that are exhaustible and being made continuously in nature. Coal, oil and gas sorts of atomic energy are the standard sources compress the fossil fuels. Uranium is a gas sorts of atomic energy, whereas the nonconventional sources like daylight, wind, rain, tides, and energy heat, that are renewable. The event and progress of grouping have connected with energy sources, quite a lot of countries throughout the globe have engaged themselves in looking and developing non-conventional energy sources that may be terribly essential to sustain the life cycle of a person. Actually consumption of energy is directly proportional to the progress of the grouping. With ever growing population, improvement within the living commonplace of mankind, industrialization of developing countries, the world demand for energy is anticipated to extend considerably within the close to future. The energy crisis that begin in 1973 caused oil supplies to decrease and costs to rise usurious. This crisis forced developing countries to cut back and hold over necessary development programs, so that they may pay for oil to stay their economies operational. It created the urgent necessity to look for and develop energy sources, like different fossil fuels i.e., coal, gas, atomic energy, and renewable energy resources. India has as well taken sure initiatives during this read. In this paper, we mostly study about review of concerning numerous non-conventional energy sources and their current standing and usage.