Abstract: Energy is the most essential element of socio-economic development and nationís economic growth. Renewable energy sources can play an immense role to fulfill this need of energy. These sources will not only enhance independency of energy but also helps in many ways such as mitigation of climate change, swift development of rural areas, improved health status and will be the best way to move towards sustainable development. Renewable energy sources, especially solar and wind, Biomass energy, are likely to play a significant role in providing reliable and sustainable electricity to consumers. Renewable Energy (RE) sources form a minuscule portion of Indiaís overall Energy consumption today, with increasing agricultural and industrial activities in the country; the demand for energy is also increasing. Many developing countries are increasingly making commitments to promote low carbon economy by adopting sustainable energy technologies. In this regard, different policies could be applied to reducing carbon emissions, such as enhancing renewable energy deployment and encouraging technological innovations. Diffusion of Renewable Energy Technologies (RETs) is governed by the status of the technology in terms of efficiency and techno-economical feasibility. This paper presents the current energy scenario and an approach to apply diffusion modeling technique to review policies supporting Renewable energy technology deployment and use diffusion parameters to provide inputs for designing future programmes. The status of renewable energy is explored in Indian context. The state wise status, different challenges, issues, barriers, solar and wind power development and policies are discussed in detail the wind and solar power are selected for detailed analysis. The results show how present trends and future forecasts of electricity-generating technologies change the electricity generation in the country.

Keywords: Renewable Energy Technology (RET), Diffusion, Wind Power, Solar Power, Biomass, India, Ministry of New and Renewable Energy (MNRE).