The project by SunZia includes a wind farm in New Mexico and 550-mile transmission line carrying electricity to Arizona. : A wind farm and transmission line billed as the largest clean energy project in US history has secured $11 billion in financing and started construction. Pattern Energy Group said Wednesday it closed on financing that includes about $8.8 billion in construction and term facilities and $2.25 billion in tax equity for the 3.5 gigawatt SunZia wind farm in New Mexico and 550-mile transmission line carrying electricity to Arizona. Pattern was bought by the Canada Pension Plan Investment Board in 2020.