The US solar trade barriers (almost) worked. But they won't anymore.

It has been two and a half years since the implementation of Section 201 tariffs on imported solar modules. Although the US solar market has grown significantly since the implementation of the tariffs, evidence shows the trade barrier has begun to limit market growth. But there are policy options that could continue to support domestic manufacturing while allowing solar deployment to expand at a robust pace. This insight examines the efficacy of the Section 201 tariffs, summarizes the lessons learned, and outlines three future scenarios.