Introduction  Offshore wind power has become a research hotspot in the development of renewable energy in the world. Although significant achievements have been made in the early stages, it is not yet mature in terms of survey design, construction management, operation and maintenance, technological innovation, and industrial financing. In order to solve the above problems, technological innovation is particularly important. Among them, big data technology has become an important part of improving the reliability and power quality of offshore wind power and reducing the cost of transportation.

  Method  Based on big data technology, the value and significance of offshore wind power data are discussed.

  Result  By taking the construction of Guangdong Offshore Wind Farm Big Data Center for example, this paper puts forward the general framework of offshore wind power data, and analyzes the important tasks of marine wind power data in Guangdong Province around this framework.

  Conclusion  The development of offshore wind power data has provided strong support for fully exploiting the wind energy resources in Guangdong Province, promoting the development of the marine wind power industry in Guangdong Province, and promoting the optimization and transformation of the energy structure and energy conservation and emission reduction.