The most alarming feature today is how to manage the energy demand and crucial climate change. To run life among these major threats, a good idea is to penetrate renewable energy sources gradually into the global energy market. These renewables are the best alternative to conventional fuels because of their abundant potential, non-pollutant nature and are exceedingly eco-friendly with the environment. The major renewables include wind, solar and diesel energy sources with a safety battery back-up to challenge the energy disaster to a possible extent. In addition, minor sources like fuel cells, biomass and tidal energy can also be included if the load demand is high. The careful blending of these available resources and technologies facilitate economic and environmental benefits. This paper overviews the performance analysis of hybrid power systems, control methodologies and modeling techniques so as to get an optimum output power.