US Solar Module Prices Jump More Than 40% as Section 232 Tariff Takes Hold

New pricing data from Anza, a procurement platform that tracks more than 95% of US solar module and battery supply, shows the median price of imported solar modules has jumped from $0.27 per watt before the Trump administration’s August 7 Section 232 proclamation to $0.38 per watt for shipments arriving after December 4 — an increase of more than 40% among suppliers that have already repriced their contracts.

A national-security tariff moves through the supply chain

The Section 232 measure imposes a 15% tariff on imported polysilicon and the products made from it — ingots, wafers, cells and finished modules — with the US Department of Commerce setting December 4 as the effective date. Unlike the antidumping and countervailing-duty orders that have targeted solar imports from specific Southeast Asian countries in past years, this tariff is framed around national security and applies more broadly across the polysilicon-based supply chain, which is why Anza’s data shows the price effect spreading well beyond any single country of origin. As of September 9, 55% of active suppliers on Anza’s platform had already built the tariff into their quotes, and those suppliers account for 65% of the modules listed on the platform.

The same panel, a higher price

Anza’s comparison of identical products under similar contract terms — a same-SKU, apples-to-apples check rather than a broad market average — found pricing up roughly 15% once the tariff is included, before accounting for a separate $0.01-per-watt charge some suppliers are now adding for warehousing modules ahead of the deadline. The platform, which says it has facilitated more than 5 gigawatts of module procurement over the past year and helped 11 clients secure 1.1 gigawatts under the tariff law’s Safe Harbor provisions, is telling developers not to treat December 4 as a hard planning deadline. “December 4 may be the effective date, but developers can’t treat it as the deadline to make a procurement decision,” Anza President Aaron Hall said, pointing to lead times, customs clearance and shipping schedules that mean sourcing decisions have to be made well before modules physically arrive.

Anza’s guidance to developers centers on three moves: prioritizing modules already sitting in US warehouses, checking which pending shipments can still clear customs before the deadline, and locking in domestic-content supply where possible — including blending domestic and imported panels to manage the capital cost of a project rather than sourcing everything from one tariff-exposed category.

Why the timing matters for project economics

The repricing lands at a moment when utility-scale solar projects in the US are still reaching financial close on the strength of current module costs, and a sustained 40% jump in imported panel prices would push up the capital cost of any project that hasn’t already locked in supply. Developers who secured contracts before the tariff took hold are effectively insulated for that procurement round, but Anza’s data suggests the market has moved quickly enough that waiting to lock in pricing is now the more expensive choice.

Sources

• Anza, “Anza Data Shows Solar Module Prices Rising Sharply After Section 232,” press release, September 22, 2026 — price figures, tariff details, supplier repricing data, executive quote. anzarenewables.com
• pv magazine USA, “Anza expects at least a 40% spike in solar module prices after Section 232,” September 25, 2026 — independent reporting confirming Anza’s findings and the December 4 effective date.
• PRNewswire distribution of the Anza release, September 22, 2026 — additional confirmation of figures.
• The Daily Energy’s earlier coverage of US utility-scale solar financing — market context.

Illustrative image. Photo: Dietmar Rabich, CC BY-SA 4.0, via Wikimedia Commons — source