The anti-dumping duties on solar cells from India, Indonesia and Laos reached another date on the calendar this week. The Commerce Department's fact sheet on its April 23, 2026 preliminary determinations scheduled the final antidumping determination for Laos "on or around September 9, 2026," with India and Indonesia scheduled earlier, on or around July 13. The preliminary margins Commerce set in April were 123.04 percent for India, 35.17 percent for Indonesia and 22.46 percent for Laos, and U.S. Customs has been collecting cash deposits on entries at those rates, adjusted to 107.77 percent for India and 22.06 percent for Laos to account for export subsidies already countervailed.
The case matters to a business buying a solar system in the Southeast because of how much of the market it touches. According to Commerce's fact sheet, the United States imported about 2.30 gigawatts of covered cells and modules from India in 2024, worth $792.6 million, along with 1.80 gigawatts from Indonesia worth $415.2 million and 1.91 gigawatts from Laos worth $335.7 million. pv magazine, reporting the preliminary determination on April 27, put the three countries at $4.5 billion of solar imports in 2025, roughly two-thirds of the volume entering the country.
Where does the India, Indonesia and Laos case go from here?
Commerce's antidumping findings are one half of the process. Countervailing duty determinations on the same products were issued earlier in the year, and pv magazine calculates the combined preliminary rates at approximately 234 percent for India, between 121 and 178 percent for Indonesia and roughly 103 percent for Laos, depending on the exporter.
The other half belongs to the International Trade Commission, which must find that the imports materially injured the domestic industry before duty orders can issue. pv magazine reports the ITC's final injury determination is scheduled for October 19, 2026, with final orders on October 26 if the vote is affirmative. The petition was brought by a coalition of domestic module manufacturers. Until orders issue, the cash deposits are security against a duty that has not been fixed, and importers who have been paying since April will either owe the final rate or receive the difference back.
What this means for a commercial solar buyer in the Southeast
Module prices in a quote this fall already carry most of this case. Deposits have been collected for more than four months, and the supply chain has been moving toward other origins and toward domestic assembly since the petition was filed. The dates that could move prices again are the October 19 vote and, separately, December 4, when the Section 232 measures on imported modules take effect. We reported the details of that action, a minimum import price and an additional tariff, in Section 232 solar module price floor.
Two things follow for a project that will be built in 2026 or early 2027. The first is to fix the module supply in the contract: origin, model, price and delivery window, in writing, before the next date on the calendar. The second is to keep the module line in proportion. Modules are one component of an installed cost that also includes racking, inverters, wiring, structural work and interconnection, and our analysis of commercial solar cost per kW in Georgia sets out how the pieces add up. A change in module price moves the total by a fraction of its own percentage.
There is also an overlap worth using. The supplier certification of origin that a careful buyer requests to manage tariff exposure is close to the certification the federal investment tax credit now requires under the prohibited foreign entity rules. One request to the supplier covers both, and the conditions of the credit are set out on our federal solar tax credit page.
How we buy modules for a project
We build under a single commercial solar EPC contract, and module procurement sits inside it rather than being passed through as a variable. The 117 kW ground-mounted system at Swainsboro Supply Company saves the customer about $1,800 a month on its power bill. That is the number that decides whether a project makes sense, and it does not move with a preliminary margin.
For a plant or a warehouse weighing a system now, the guidance is plain. Get the quote, fix the supply, and let the tariff calendar run on its own. Our page on solar for manufacturing facilities explains how a production load pairs with an array, and our calculator gives a first estimate of size and savings. Send us twelve months of utility bills and we will price the system with the module origin and delivery window written into the offer.