Osmotic power, also known as salinity gradient power, is a form of renewable energy that harnesses the energy released when freshwater and saltwater mix. This energy is generated through the process of osmosis, where a semi-permeable membrane allows water molecules to pass through while blocking salt ions. As the saltwater and freshwater mix across the membrane, pressure is created, which can be captured and converted into electricity through a turbine. Osmotic power has the potential to provide a constant and reliable source of renewable energy, as ocean and river water are continuously mixing naturally. This technology has the added benefit of being environmentally friendly, as it does not generate greenhouse gas emissions or other pollutants. Research in osmotic power is focused on improving the efficiency of membrane technologies, developing cost-effective and scalable systems, and exploring potential applications in coastal regions, estuaries, and wastewater treatment plants. Overall, osmotic power holds promise as a sustainable energy source that can help reduce dependence on fossil fuels and mitigate the impacts of climate change.