A Grid-Scale Energy Storage Using Reverse Osmosis Concentrate
The United States Department of Energy launched the Sunshot Initiative with a goal of reducing the cost of solar energy to $.05/kWh to make it more competitive with other forms of energy. In pursuit of this goal, a project using reverse osmosis concentrate for grid-scale energy storage has been undertaken by researchers at the California State Polytechnic University, Pomona. To assess the feasibility of such a project, a techno-economic analysis is required in order to ensure the project can meet Department of Energy goals. Using information from water districts using reverse osmosis in conjunction with thermodynamic engineering principles, the techno-economic analysis can be used as a primary indicator of the project's economic potential. This presentation explains the technical and financial considerations made in order to assess the viability of using reverse osmosis concentrate for grid-scale energy storage in order to meet the goals of the Sunshot Initiative.