Techno-economic analysis to identify the optimal conditions for green hydrogen production

•Green hydrogen (H2) can store large amounts of energy for long periods of time.•H2 made from wind or grid bought electricity is compared via techno-economic analysis.•Minimum H2 price of 4.85 £/kg found at highest setpoint of 500 kg of H2/hr.•H2 price is closely linked to the capital expenditure, sizing and safety.