Techno-economic analysis and Monte Carlo simulation of green hydrogen production technology through various water electrolysis technologies

•A technoeconomic analysis was performed on three hydrogen production technologies.•The results of the numerical system model were integrated to derive the hydrogen production rate of each electrolysis technology.•NPV analysis, sensitivity analysis, and Monte Carlo method were undertaken.•SOEC system with external waste heat source (SOEC (W.H)) was found to be the most economical alternative followed by the AWE system.•Electricity cost and tax rate are the two most dominant variables in determining LCOH.