The article delves into various renewable energy technologies suitable for sustainable power generation, with a focus on hydropower, biomass, wind, solar, and fuel cell methodologies. Hydropower stations are categorized based on the water head levels, with moderate-level stations being popular in hilly areas. While hydropower is clean and reliable, it faces limitations in availability and high costs. Biomass technology is discussed for efficient power generation through direct combustion methods, offering benefits like carbon neutrality and low energy generation costs. Windmills are highlighted as a cost-effective and renewable energy source, though they have drawbacks like noise production and impact on wildlife. Solar power is explored for its natural availability and the integration of multiple cells to enhance efficiency, with cadmium telluride being a preferred material. The article also details fuel cell technologies, particularly focusing on Phosphoric Acid Electrolyte Material Fuel Modules for stationary power production and Proton Exchange Membrane Fuel Cells for lightweight automotive systems. The advantages and drawbacks of each technology are discussed, with a positive sentiment towards the potential of these renewable energy sources for sustainable power generation.