Abstract
Energy crisis is one of the major issues of our society. There are different forms of renewable energy like wind power, geothermal energy, biomass from plants and solar energy. Solar energy is the only freely available source of renewable energy that comes directly from sun and may be converted into heat or electricity. In this article, we develop a model for solar radiation by considering the laminar flow of an incompressible Oldroyd-B fluid toward a thermally and solutally stratified moving surface with nanoparticles and thermal radiation. The data have been computed by homotopic algorithm. The computed solutions of velocity, temperature and nanoparticle concentration are plotted for multiple values of parameters of interest.