A promising method for producing pure hydrogen energy from the dissolution of carbon steel by green inhibitors. Salicornia green inhibitor used for C-steel protection due to both ecological and economic importance (low cost). An evaluation was conducted on the effectiveness of Salicornia extract as a corrosion inhibitor using Potentiodynamic polarization (PDP), electrochemical impedance spectroscopy (EIS), and Hydrogen evolution ,Salicornia are capable of delaying the corrosion of carbon steel (C-steal) in 1 M HCl by forming an adsorbed protective layer of Salicornia molecules. and decrease the reaction of C-steal with the corrosive media consequently hydrogen evolution decreases. The inhibition efficiency for Salicornia inhibitor reached to 93.8% indicating that Salicornia extract acts as good inhibitor. Salicornia molecules adsorb according to the Langmuir isotherm with regression coefficient (R2 = 0.9997). The anticorrosion performance of Salicornia inhibitor was confirmed by Scanning Electron Microscopy (SEM).