This paper systematically and successfully reviewed the renewable energy trend from 2010 to 2023. This review detailed the difference renewable energy and conclusion was drawn that solar photovoltaic (PV) energy has the leading trend in power generation growth and innovation. This research work explained in detail the most recent solar photovoltaic optimization techniques and it was observed from the review that hybridization of intelligent and non-intelligent maximum power point tracking technique has the best tracking power conversion efficiency. The advantages and disadvantage of solar PV together with the solar optimization and innovational growth trends were examined. This research showed that clean and renewable energy sources will continue to grow and the solar energy industry is expected to experience significant growth and rapid innovation in the next 10 years. From the observed rapid growth and innovation trend in solar energy, the world will have a very cheap, abundant and clean energy before 2050.