REDstack works on energy generation from salt water. RED is a form of sustainable energy generation, where the fuel is fresh and salt water. A fraction of the fresh water is combined with sea water in a membrane pile, or RED stack, to which the company also owes its name: REDstack. Salt and fresh water are mixed in a controlled fashion through which electricity can be generated. The resulting brackish water mixture is then returned to the sea and the generated electricity is distributed through the grid. We are calling this Blue Energy: a completely sustainable source of electricity.