A lack of knowledge on the economic feasibility and optimal design and operation of offshore hybrid wind-hydrogen parks is identified by utility companies and grid operators. This study reviews the techno-economic optimisation of an offshore wind-hydrogen park from a developer’s perspective and specifically considers the electrolyser technology and wind-hydrogen ratio. A MATLAB model has been developed that optimises between electricity and hydrogen production based on the wholesale energy prices and conversion losses. Electricity uptake and curtailment are included too.