This project aims to design, model development, control and experimental validation of renewable energy-based desalination systems. The renewable energy systems to be considered include PV, wind turbine, fuel cells and pressure retarded osmosis (PRO) processes. Osmotic energy from natural salinity gradients of water possesses a great potential to contribute to the world energy supply as well as water desalination without any greenhouse gas emission. Combining PRO and other renewable energy systems with RO/MD on a single framework, water desalination and renewable energy generation will be carried out using water of different salinity concentrations by mixing saline water with fresh water and appropriate control methodologies will also be developed for the system. Past achievements include optimising water treatment with renewable energy and emphasising reverse osmosis.