The described offshore wind turbine foundations are specifically designed for the Donghai Bridge Offshore Wind Farm (DBOWF). This windfarm utilizes 27 units of 3.6 megawatt (MW) wind turbines and an additional 5 MW wind turbine, intended for generating on-grid electricity. The construction and design of these foundations facilitate energy production from offshore winds, providing a renewable source of power. This technology is deployed in marine environments and is suitable for large-scale energy generation utilized by power networks. Data users should apply the provided Life Cycle Assessment (LCA) details to model energy consumption and environmental emissions of offshore wind farms accurately. The PLCA (Product Life Cycle Accounting) modeling method was applied. It is crucial to take into account the specific technical parameters from DBOWF's design documents (Table 2), the transportation energy for key materials and equipment, as well as the operational energy usage and emissions. When analyzing the lifecycle of the wind farm from cradle to grave, all four stages—manufacturing, transportation and installation, operation and maintenance, and dismantling and recycling—must be considered. The functional unit for comparison is 1 kWh of on-grid electricity provision. Attention must be paid to the uncertainties detailed in the sensitivity analysis of the study, as these can affect the outcome of the LCA.