Techno-economic analysis of an integrated desalination-renewable-hydrogen system for zero-emission freshwater and electricity production

• Double pass RO integrated RHS modelled to supply electricity and freshwater. • Integrated system produces electricity at LCOE of $0.165/kWh. • Feed pressure variation in double pass RO resulted in WPC in between $4.34–$6.90/m 3. • WPC has minimal impact on LCOH. • LCOE drops with inflation and rises with discount rate; NPC shows opposite trend. Developing a large-scale renewable hydrogen system intended to supply reliable clean electricity to remote island communities are constrained by limited freshwater availability for system itself: i.e., hydrogen production through electrolysis requires high-quality water. This study, hence, presents a detailed technoeconomic analysis of a double-pass reverse osmosis…