THERMODYNAMIC FEASIBILITY OF A PUMPED THERMAL ENERGY STORAGE DRIVEN BY OCEAN TEMPERATURE GRADIENT

The significant future penetration of variable renewable energy, necessary to decarbonize power production, will require energy storage to stabilize the electric grids. Electrochemical batteries may not be the best solution for all energy storage needs due to their limited lifetimes, performance degradation and use of critical raw materials. Pumped thermal energy storage (PTES) is an attractive solution since it does not suffer