The Commerce Department will give its final ruling Tuesday on whether to slap Chinese firms with anti-dumping penalties on utility-scale wind tower imports.
The tariffs could be as high as 73 percent for Chinese wind towers that generate at least 100 kilowatts, and could top out at 60 percent for Vietnamese imports.
The decision is part of a larger clean-energy trade spat between the Obama administration and China.
In October, Commerce approved tariffs on Chinese solar firms. Those penalties ranged between 34 and 47 percent for a bulk of the Chinese companies selling solar cells and panels in the U.S.