Bruce Kelly is a senior process engineer with nearly five decades of experience in the design, engineering and economic assessment of advanced renewable energy systems and conventional power plants. He has played a leading role in the conceptual, preliminary and final design of concentrating solar power (CSP) facilities, with particular expertise in central receiver and parabolic trough technologies using nitrate salt for thermal storage and steam generation. Throughout his career, Bruce has worked on landmark solar thermal and energy storage projects across the United States, Europe and the Middle East, collaborating with organisations such as the U.S. Department of Energy, EPRI, NREL, Abengoa Solar, SolarReserve, GlassPoint and Bechtel. His work spans system integration, thermodynamic modelling, equipment specification and cost optimisation, supporting both commercial projects and government-funded research programmes. He is widely recognised for his deep technical knowledge of thermal energy storage, power cycle optimisation and the integration of renewable energy into large-scale power systems.