US solar duties on imports: manufacturers target India, Indonesia and Laos

US solar companies

A new petition seeks US solar duties on imports from India, Indonesia and Laos to curb alleged dumping. A coalition of domestic manufacturers filed AD/CVD cases with Commerce and the ITC. They allege Chinese-backed and Indian firms sell below fair value with illegal subsidies. As a result, US solar duties on imports could expand again after last month’s Southeast Asia tariffs.

Who is behind the push

The Alliance for American Solar Manufacturing and Trade leads the petition. Members include First Solar, Mission Solar Energy and Qcells. Previously, the alliance won duties on Cambodia, Malaysia, Thailand and Vietnam. However, petitioners say producers shifted capacity to Laos and Indonesia. They argue US solar duties on imports must follow those shifts to protect jobs and investments.

The filing targets crystalline silicon PV cells and modules. Petitioners claim antidumping sales under “normal value.” They also cite countervailable subsidies that distort US prices. The first step is an inquiry by Commerce and the ITC. Regulators can then impose provisional tariffs pending final determinations.

How new tariffs could reshape supply chains

New tariffs would raise delivered costs for targeted panels and cells. Meanwhile, they could bolster US factory utilization and planned expansions. Developers may diversify procurement across non-targeted sources to manage risk. As a result, buyers face short-term price volatility and contracting delays.

Trade diversion remains a central concern for policymakers. Petitioners argue enforcement must track ownership and processing routes. Therefore, compliance programs and country-of-origin audits will matter more. Clear guidance on scope will be critical for bankable supply.

The Metalnomist Commentary

Trade policy is steering the solar supply chain as much as technology. If Commerce opens these cases, expect tighter margins and faster localization. Bankable EPCs will hedge with multi-country sourcing while awaiting preliminary duty rates.