As the Paris Agreement on Climate Change came into effect in 2021, the Korean government set a target of 63.8 GW new renewable power generation until 2030 and announced “The 3020 Implementation Plan of Renewable Energy”, which was a policy to supply more than 95% of the new generation capacity as solar power and wind power. Continuous investment in new renewable energy will be required to reduce the greenhouse effect and to achieve sustainable growth. In particular, offshore wind power is advantageous for the construction of a large-scale power complex. This paper evaluates the suitability of the jacket-type substructure by analyzing the weather environment, marine environment, water depth survey, ground survey, and major equipment selection data. When the new offshore wind power complex is planned, it can be useful for selecting the suitable substructure and determining the turbine capacity to achieve good performance.