The strategy for developing and improving the application of green, clean, renewable and gratis solar energy is a challenge for multidisciplinary teams of scientists. Exquisite examples of positive world practice of the largest solar power plants are presented in this paper, with all the characteristics, starting from the materials of photovoltaic panels and technical performance to the cost and financial benefits. The aim was to analyze the development of solar technologies in the function of defining further perspectives. The techno economic feasibility of the strategic orientation towards solar energy has been demonstrated in the model of the solar power plant, carried out by experiment, profitability calculation and multi-criteria analysis. The conclusion is that long-term financial and holistic benefits can be achieved by investing in solar power plants.