Commerce Finalizes Solar Import Duties for India, Indonesia and Laos

The U.S. Department of Commerce finalized solar import duties calculations on crystalline-silicon photovoltaic cells and modules from India, Indonesia, and Laos on September 11, concluding that producers in all three countries sold products in the United States below fair value and received countervailable subsidies.

The Commerce Department’s final determinations set countrywide antidumping margins of 123.04% for India, 94.36% for Indonesia and 65.43% for Laos. Countervailing-duty rates range from 73.20% to 173.70% for named Indonesian producers and from 82.03% to 153.67% for Lao producers, while India’s rate is 126.09%. The calculations are final for Commerce’s investigation, but the cases still require a final injury decision from the U.S. International Trade Commission before definitive duty orders can be issued.

The action is a material new step in the trade proceeding that Microgrid Media covered when the USITC made its preliminary injury finding on the same imports in August 2025. That earlier vote allowed the investigations to continue; the new decision fixes Commerce’s final dumping and subsidy calculations.

Solar import duties vary by country and producer

Antidumping and countervailing-duty investigations address different conduct. Antidumping margins measure sales at less than fair value. Countervailing duties address subsidies that Commerce determines are provided by a foreign government. Because the two proceedings operate together, buyers should not treat a country headline rate as a universal landed-cost estimate.

• India: Commerce assigned a 123.04% weighted-average dumping margin to the listed producers and all others. After the stated subsidy offset, the corresponding antidumping cash-deposit rate is 107.17%. The final subsidy rate is 126.09%.
• Indonesia: The dumping margin is 94.36% for the listed producers and all others. Final subsidy rates are 173.70% for PT Blue Sky Solar Indonesia and 73.20% for PT REC Solar Energy Indonesia and all other producers.
• Laos: The dumping margin is 65.43%, with a stated cash-deposit rate of 65.03% after the subsidy offset. Final subsidy rates are 82.03% for Solarspace Technology and all others, and 153.67% for Vietnam Sunergy.

Several of the rates are marked as based on facts available with adverse inferences, a method Commerce may use when it determines that a respondent did not provide information required for the investigation. That designation is important because it explains why some producer-specific outcomes are substantially higher than others; it is not a separate tariff added to the listed rate.

The cases are not finished

Commerce’s announcement completes the agency’s final determination stage, not the entire legal process. Under the department’s AD/CVD final-determination procedure, the USITC makes a final decision on whether the dumped or subsidized imports injured or threatened the domestic industry. An affirmative vote leads Commerce to issue duty orders; a negative vote terminates the investigations.

Reuters reported that the USITC vote is scheduled for October 14 and that final orders would be expected in November if the commission reaches an affirmative decision. That sequence means the September 11 figures should be treated as final Commerce rates within a proceeding whose ultimate continuation still depends on the independent injury determination.

Official data show the scale of the covered trade

Commerce’s fact sheet reports that the three countries supplied just over 6.0 GW of covered solar products valued at approximately $1.54 billion in 2024. India accounted for 2.30 GW valued at $792.6 million, Indonesia for 1.80 GW valued at $415.2 million, and Laos for 1.91 GW valued at $335.7 million.

Those figures describe the trade recorded in 2024, not a current 2026 purchasing forecast. They establish the scale that Commerce examined, but they do not show how procurement shifted after preliminary duties, subsequent tariff actions or the opening of new U.S. solar-cell manufacturing capacity.

The investigation was brought by the Alliance for American Solar Manufacturing and Trade, whose members include First Solar, Hanwha Q CELLS USA and Mission Solar Energy. Commerce’s final solar import duties support the petitioners’ case on dumping and subsidies, while the USITC retains responsibility for the separate final injury question.

Developers need producer-level review, not one headline number

For solar developers, module assemblers and equipment buyers, the practical exposure depends on the exporting producer, the product’s scope, the entry date and the interaction between antidumping and countervailing cash-deposit instructions. The countrywide figures are therefore a compliance signal, not a complete project-cost calculation.

The decision also sits within a broader shift in U.S. solar trade enforcement. Microgrid Media has reported on a separate petition concerning South Korean solar cells, illustrating how sourcing changes can move scrutiny to different manufacturing jurisdictions.

The next decisive event is the USITC’s final injury vote. Until then, the most accurate description is that Commerce has finalized its solar import duties calculations for India, Indonesia and Laos, while definitive orders remain contingent on the commission’s ruling.