Before revision:  This paper reviews techno-economic storage valuation methods and expands them by the new " market potential method " which derives a system-value by examining the capacities obtained from a long-term investment planning optimisation .
After revision:  This paper reviews techno-economic storage valuation methods and expands them by the new " market potential method . The market potential method derives the value of technologies by examining common deployment signals from energy system model outputs in a structured way .