SEOUL—South Korea unveiled a 48.5 trillion won ($43.2 billion) plan to build the world’s largest wind power plant by 2030 as part of efforts to foster an environmentally-friendly recovery from the COVID-19 pandemic. The project is a major component of President Moon Jae-in’s Green New Deal, initiated last year to curb reliance on fossil fuels in Asia’s fourth-largest economy and make it carbon neutral by 2050. Moon attended a signing ceremony in the southwestern coastal town of Sinan for the plant, which will have a maximum capacity of 8.2 gigawatts. “With this project, we are accelerating the eco-friendly energy transition and moving more vigorously toward carbon neutrality,” Moon said at the event. Utility and engineering companies also attended, including Korea Electric Power Corp., SK E&S, Hanwha Engineering & Construction Corp., Doosan Heavy Industries & Construction Co., CS Wind Corp., and Samkang M&T Co. The companies will provide 47.6 trillion won …