The research examines the existing thermal energy storage methods used in concentration solar power facilities by investigating system design elements, operational capabilities, and performance metrics. This paper proposes a benefit evaluation method for self-built, leased, and. . is a key enabler in the shift toward cleaner and more efficient energy systems. It allows surplus thermal energy—sourced from heat or cold environments— o be stored and retrieved when needed, enhancing energy management flexibility. The research. . For solar-plus-storage—the pairing of solar photovoltaic (PV) and energy storage technologies—NLR researchers study and quantify the economic and grid impacts of distributed and utility-scale systems. Much of NLR's current energy storage research is informing solar-plus-storage analysis.