The United States is escalating trade action on imported solar panels, with preliminary countervailing duties that could climb as high as 3403%, intensifying the debate over industrial policy and energy security.
Solar tariffs expand to India, Laos and Indonesia
The U.S. Department of Commerce has issued a preliminary decision to impose anti-subsidy measures on solar cells and modules imported from India, Laos and Indonesia. The ruling marks the first of two major steps, with a separate determination on potential dumping expected next month and final decisions due before the end of the year.
A new phase in the solar tariffs dispute
The investigation stems from a petition filed in July 2025 by the Alliance for American Solar Manufacturing and Trade, a coalition that includes Hanwha Qcells and First Solar. The group alleges that certain manufacturers in the three countries benefited from unfair government subsidies and sold products in the United States below production costs. Its stated objective is to safeguard billions of dollars in domestic manufacturing investments made on U.S. soil.
Injury findings and record-high duty rates
The move follows similar measures taken over the past year against Cambodia, Malaysia, Thailand and Vietnam. In those cases, the Commerce Department issued affirmative final determinations on both dumping and subsidies. Final tariff rates reached significant levels, up to 125.37% for dumping in Cambodia and as high as 3403.96% in countervailing duties. For Vietnam, antidumping rates climbed to 271.28%, with countervailing duties reaching 542.64%. The U.S. International Trade Commission concluded that those imports caused material injury or posed a threat to the domestic industry, and the orders took effect in June 2025.
Production shifts and circumvention concerns
According to the latest petition, after earlier measures were imposed, some production linked to Chinese groups shifted toward Indonesia and Laos to bypass previous solar tariffs. Indian companies, meanwhile, are accused of exporting modules below cost.
The alliance’s push to rebuild U.S. solar manufacturing
The Alliance for American Solar Manufacturing includes Convalt Energy, First Solar, Meyer Burger, Mission Solar, Qcells, REC Silicon, Swift Solar and Talon PV. Since 2024, it has backed multiple trade actions, arguing that unfair practices have created volatility and uncertainty in the domestic market. In a public statement, the alliance’s counsel said certain companies violated trade laws by flooding the U.S. market with subsidized panels sold at unfair prices. Data from the Solar Energy Industries Association indicate that since 2022, investments in U.S. solar panel manufacturing have surpassed $100 billion, with domestic production capacity more than tripling.
The Waaree case and enforcement scrutiny
In parallel, U.S. Customs and Border Protection has launched an investigation under the Enforce and Protect Act against Waaree Solar Americas. Authorities allege that crystalline silicon photovoltaic cells of Chinese origin were labeled as Indian to avoid duties stemming from the 2012 Solar 1 case. More than 5.4 million kilograms of CSPV modules were shipped to the United States in 2024, while U.S. imports from India rose nearly 800% between 2022 and 2024. Indian imports of cells from China reportedly increased by more than 600% over the same period. Customs authorities have begun retroactively collecting duties from June 20, with a final decision expected in April 2026.
Economic impact of solar tariffs in the United States
The U.S. market accounts for more than $15 billion a year in solar panel imports, according to the U.S. Energy Information Administration, with more than 80% of supply coming from abroad, primarily from Asia. Indonesia saw photovoltaic exports rise from $279.6 million in 2023 to $564 million in 2024, reaching $684 million in the first seven months of 2025. Tighter trade measures could reshape supply routes and influence module costs for U.S. developers and installers, forcing Washington to balance industrial protection with renewable deployment goals. Final determinations on India, Laos and Indonesia will define the scope of the new solar tariffs and their role in shaping the U.S. energy transition.
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