U.S. Solar Panel Tariffs in 2026: History, Rates, and Section 232 Impact

Yes. There is no single U.S. solar panel tariff rate. As of October 6, 2026, China Section 301 tariffs and applicable AD/CVD duties remain in force, while the broad Section 201 safeguard has expired. New Section 232 minimum import prices and derivative tariffs are scheduled to take effect on December 4, 2026. Anti-stockpiling restrictions are already in effect. The amount due depends on the product, origin, manufacturer, entry date, and applicable exceptions.

Use the table below to distinguish current duties from scheduled changes. Confirm the shipment’s HTSUS classification, supplier-specific cash-deposit instructions, and applicable certifications before relying on a rate. Sources and historical context follow the table.

The table separates measures in force on October 6, 2026, from those scheduled for December. Rates are additional duties or minimum-price mechanisms, not a universal total tariff or an installed-system price.

Measures can overlap, but exemptions prevent some combinations. Confirm the applicable HTSUS classification and customs instructions for the shipment rather than adding every rate in this table. Official sources are linked in the sections below.

The phrase “solar tariffs” is often used for four different trade tools. Understanding the distinction is the fastest way to make sense of the rates reported in the news.

1. Section 201 safeguard tariffs were broad, temporary duties intended to give the domestic industry time to adjust to import competition. The solar safeguard began in 2018 and terminated on February 6, 2026.

2. Section 232 measures address imports found to threaten U.S. national security. The August 2026 polysilicon action combines percentage tariffs on covered derivatives with minimum import prices across the crystalline-silicon supply chain. Unlike the expired Section 201 safeguard, the proclamation has no automatic end date.

3. Section 301 tariffs address specific U.S. findings about foreign trade practices. Solar cells from China have faced an additional 50% Section 301 duty since September 27, 2024, including covered cells whether or not assembled into modules; tariffs on Chinese solar wafers and polysilicon increased to 50% on January 1, 2025. In July 2026, USTR also imposed new Section 301 duties on many trading partners over forced-labor import policies, subject to product exemptions and special rules.

4. Anti-dumping and countervailing duties (AD/CVD) are tied to findings that particular imports were sold below fair value or benefited from countervailable subsidies. These rates can vary dramatically by country, exporter, and producer and may be layered together.

The modern tariff history began with a 2011 trade petition alleging that Chinese manufacturers were selling crystalline silicon photovoltaic products in the United States at unfairly low prices and receiving government subsidies. Commerce imposed anti-dumping and countervailing duty orders on Chinese solar cells in 2012. A second set of cases later covered certain solar products from China and Taiwan, closing a supply chain route that had become more important after the first orders.

Those orders did not disappear when the broader Section 201 safeguard expired. In May 2026, the USITC concluded that revoking the existing orders covering crystalline silicon photovoltaic products from China and Taiwan would likely lead to continued or recurring material injury. As a result, the China and Taiwan orders remain in place.

In 2017, manufacturers Suniva and SolarWorld petitioned for relief under Section 201 of the Trade Act. Unlike AD/CVD cases, a Section 201 action does not require a finding that a specific country dumped or subsidized goods. It addresses serious injury from increased imports more broadly.

In January 2018, the Trump administration imposed a 30% safeguard duty on imported crystalline silicon solar modules and on cells above a 2.5-gigawatt annual tariff-rate quota. The module rate was scheduled to step down annually. Because the measure applied across many countries, it was broader than the earlier China- and Taiwan-focused trade cases. The original proclamation and subsequent modifications are collected on the USTR Section 201 solar page.

The announcement encouraged developers to accelerate purchases and warehouse modules before higher duties took effect. That strategy could protect a project’s equipment budget, but it required working capital, storage, insurance, and confidence that the modules would match the project ultimately built. Large developers were better positioned to absorb those costs than smaller installers.

In February 2022, the Biden administration extended the Section 201 safeguard for four more years. The extension began at 14.75%, stepped down to 14.5%, 14.25%, and 14% in its final year, raised the cell quota from 2.5 GW to 5 GW, and excluded bifacial modules. In June 2024, the bifacial exclusion was removed for most new entries. In August 2024, the administration expanded the tariff-free cell quota again, from 5 GW to 12.5 GW, because U.S. module assembly capacity was growing faster than domestic cell capacity. The 2024 proclamation explains the quota change and the history of the safeguard.

A separate anti-circumvention inquiry examined whether companies were completing Chinese-origin solar products in Cambodia, Malaysia, Thailand, or Vietnam to avoid the China AD/CVD orders. Commerce made affirmative findings for certain companies and established a certification process to distinguish covered from non-covered goods.

A temporary two-year waiver delayed collection on covered Southeast Asian imports, but that waiver expired June 6, 2024. Commerce’s expiration guidance also required modules imported during the waiver to be used by a specified deadline or potentially become subject to duties.

USTR increased the Section 301 tariff on covered solar cells from China, whether or not assembled into modules, to 50% effective September 27, 2024. It later raised Section 301 tariffs on Chinese solar wafers and polysilicon to 50% effective January 1, 2025. These duties are separate from the China AD/CVD orders and can apply in addition to other charges. USTR’s December 2024 announcement summarizes the wafer and polysilicon change.

In April 2025, Commerce issued affirmative final determinations in new AD/CVD investigations covering solar cells and modules from Cambodia, Malaysia, Thailand, and Vietnam. The resulting rates are not one flat “Southeast Asia tariff.” They vary by country and company—from low or zero dumping margins for some respondents to triple-digit dumping or subsidy rates for others. The Commerce final determinations list the manufacturer-specific rates and case numbers.

The practical result was another supply-chain shift. Developers sought suppliers with manageable company-specific rates, increased attention to domestic content, and diversified sourcing beyond the four named countries. That adaptation can reduce exposure to one order, but it does not eliminate the risk that a later investigation follows production into a new country.

The Section 201 safeguard terminated on February 6, 2026, after its maximum eight-year run. That ended the broad tariff that had applied to many imported crystalline silicon modules regardless of origin. It did not end the Section 301 duties on China or the AD/CVD orders on China, Taiwan, Cambodia, Malaysia, Thailand, and Vietnam.

Commerce published final AD/CVD determinations on covered solar cells and modules from India, Indonesia, and Laos in September 2026. These are final Commerce determinations, not yet final duty orders: the USITC injury vote is scheduled for October 14, 2026. Final orders depend on an affirmative injury determination. Rates and cash-deposit instructions remain specific to each case and supplier; readers should consult the applicable notices, including the Indonesia final AD determination, Laos final AD determination, and India final CVD determination.

After the Supreme Court held that IEEPA did not authorize the 2025 tariff actions at issue, the administration imposed a temporary 10% surcharge under Section 122 of the Trade Act. The surcharge took effect February 24 and expired July 24, 2026, after its statutory 150-day period. The presidential proclamation explains its scope and former stacking rules.

On July 23, USTR announced new Section 301 tariffs of 10% or 12.5% on many trading partners over forced-labor import policies. The action includes product exemptions and excludes articles subject to Section 232 tariffs, so importers must check the applicable annexes rather than assume every solar product carries the same new charge. USTR’s July 2026 announcement lists the country groupings and exemption framework.

Polysilicon is ultra-purified silicon. Solar-grade polysilicon is the starting material for most conventional crystalline-silicon panels, while still-purer semiconductor-grade polysilicon supports silicon computer chips. Thin-film solar technologies such as cadmium telluride do not use this supply chain, but most global solar manufacturing does. That makes polysilicon strategically important to both energy and semiconductor production.

The supply chain is highly concentrated. The International Energy Agency has reported that China accounts for more than 80% of global solar module manufacturing capacity and about 95% of wafer capacity. The White House proclamation says global polysilicon output has grown more than 270% since 2020, inventories reached 400,000 metric tons at the end of 2024, and the U.S. share of global polysilicon production capacity fell from 50% in 2005 to less than 2% in 2024. The administration’s case is that foreign-supported overcapacity pushed prices down, weakened U.S. producers, and created a security risk for two critical industries. The IEA’s clean-technology manufacturing analysis provides broader context on China’s share of the solar supply chain.

Section 232 is the national-security authority. It allows the president to adjust imports after Commerce finds that the quantities or circumstances of those imports threaten to impair national security. Commerce opened this polysilicon investigation on July 1, 2025, covering the raw material and its derivatives. The Bureau of Industry and Security notice documents the investigation’s scope and start date.

The new minimum import prices are $21 per kilogram for polysilicon, $100 per kilogram for ingots and wafers, $0.22 per watt for solar cells, and $0.38 per watt for solar modules. If the entered value is below the applicable minimum and the importer submits the required documentation, CBP will assess a specific tariff equal to the difference. Importers may instead certify that the first arm’s-length U.S. sale will meet the minimum price or that it occurs under qualifying fixed contract terms agreed before the proclamation was signed on August 6, 2026. Those certifications are the qualifying documentation; they do not automatically eliminate a duty on the gap below the minimum. Without the required documentation, the specific tariff equals the full applicable minimum import price. The separate percentage duty and other applicable duties may also be due.

A separate 15% ad valorem tariff applies to covered polysilicon ingots and downstream derivatives. The United Kingdom receives a 10% rate. For covered products from the European Union, Japan, Korea, Taiwan, Switzerland, and Liechtenstein, the Section 232 tariff plus the ordinary Column 1 duty receives the combined 15% treatment specified in the annex. This is not a cap on all duties: the minimum-price duty and applicable AD/CVD can remain. Raw polysilicon itself is covered by the minimum-price program, but the proclamation’s percentage-tariff clause begins with ingots and downstream derivatives.

Both programs apply to covered goods entered for consumption on or after 12:01 a.m. Eastern time on December 4, 2026, under the August 6 Section 232 proclamation. They continue unless expressly reduced, modified, or terminated, although Commerce may adjust the minimum prices as market conditions change. The proclamation also directs Commerce and CBP to act against companies that stockpile covered goods before the effective date.

Product coverage follows the proclamation’s HTSUS Annex I and Annex II duty provisions. The listed photovoltaic classifications include crystalline and other cells and modules. A thin-film exclusion in an AD/CVD case should not be assumed to exempt a product from Section 232.

This effectively refills the policy gap left when the Section 201 safeguard expired in February, but it is not simply a renewal. The new action relies on Section 232’s national-security authority, reaches upstream materials and components, and pairs percentage duties with enforceable minimum prices. The White House describes it as replacing the earlier, narrower safeguard on solar cells and modules.

The minimum price may matter more than the percentage tariff. A conventional tariff rises and falls with the declared import value. If an exporter cuts its price, the dollar amount of a 15% tariff also falls. A minimum import price instead establishes a dollar threshold, with the specific tariff filling the gap when covered merchandise is entered below it. That makes the floor a more durable barrier to price undercutting than a percentage duty alone.

The policy is intended to rebuild the entire domestic chain—from polysilicon through ingots, wafers, cells, and modules—rather than protect module assembly alone. Commerce may approve company-specific onshoring plans and offer Section 232 tariff relief on production equipment and covered inputs while a qualifying U.S. facility is built. Approved plans must commit to starting construction by January 20, 2029, and benefits can be withdrawn if a company fails to meet its milestones.

Solar module prices have fallen substantially since the first modern U.S. trade cases. EIA data show that the average value of U.S. module shipments fell from $1.96 per watt in 2010 to $0.39 per watt in 2022. The weighted average was about $0.34 per watt in 2023 and $0.31 per watt from January through September 2024. The National Laboratory of the Rockies reported that U.S. module prices were about $0.27 per watt in the third quarter of 2025, even as U.S. pricing remained above global spot prices.

Falling module prices reduce the absolute cost of a modest percentage tariff: 10% on a $0.30-per-watt module is $0.03 per watt. But that example should not be generalized to every project. From December 4, a covered crystalline-silicon module will also face a $0.38-per-watt minimum import price and the applicable Section 232 percentage duty. Manufacturer-specific AD/CVD rates can be far higher, multiple duties may stack, and import uncertainty can add costs through shipping changes, customs reviews, warehouse time, replacement procurement, and construction delays.

Before the final proclamation was published, Roth Capital estimated that an import-only minimum-price policy could add about $0.10 per watt to module costs and that each $0.10-per-watt increase could add roughly $4.00 to $5.50 per megawatt-hour to power purchase agreement prices. Those are scenario estimates, not a universal project forecast. Actual effects will depend on the final HTSUS annexes, product origin, existing duty stack, contract terms, domestic content, supplier response, and whether new U.S. manufacturing comes online. The Roth Capital scenario reported by pv magazine explains the pre-proclamation cost model.

The module is also only one part of a solar project. Labor, racking, inverters, engineering, permitting, interconnection, financing, and development costs all affect the installed price. For developers and investors, the most consequential tariff risk is often not a few cents per watt by itself; it is the risk that a supplier, delivery date, or financing assumption changes after the project budget is set.

For an investor, a procurement change matters when it changes the project’s total construction cost, completion date, or expected cash flow. Energea evaluates those assumptions together with revenue contracts, financing, and operating risks before committing capital.
See how Energea evaluates solar investment opportunities. Review the project-level information and risks in each offering.

Average U.S. solar module price: 2010–2023 values and the January–September 2024 weighted average use the EIA’s Monthly Solar Photovoltaic Module Shipments Report; the Q3 2025 value uses the National Laboratory of the Rockies’ Fall 2025 Solar Industry Update. The series is nominal; 2024 is a partial-year weighted average and 2025 is a quarterly market-price observation. It is best read as a long-term trend rather than a quote for a specific module.

Yes. Buying solar panels from China is not categorically prohibited, but direct imports can face several overlapping requirements. Depending on the product, the importer may owe a 50% Section 301 duty, applicable AD/CVD cash deposits, and—for covered entries on or after December 4, 2026—the new Section 232 minimum price and percentage duty. Imports must also comply with customs classification, country-of-origin, certification, and forced-labor rules.

For a homeowner, those costs and compliance obligations are typically handled by the manufacturer, distributor, or installer and reflected in the quoted system price. A commercial buyer importing equipment directly should confirm the cell origin, module origin, exporter and producer combination, applicable certifications, and deposit rates with a customs professional before committing to a purchase.

Some do. China Section 301 duties, applicable AD/CVD, and the scheduled Section 232 measures can apply to the same covered shipment. But exemptions and special country rules matter: the July 2026 forced-labor Section 301 action excludes certain Section 232-covered articles. There is no reliable total rate without checking the product classification, origin, supplier, and entry date.

They can be. Assembly in the United States does not mean every input was made domestically. Imported cells, wafers, or other covered inputs may face duties before assembly, affecting the finished module’s cost. Ask where the cells and upstream materials were produced rather than relying on the module’s final assembly location alone.

A tariff percentage applies to covered imports, not automatically to the full installed-system price. For example, a 10% duty on a $0.30-per-watt module adds $0.03 per watt before other duties and costs. The impact on a complete system depends on how much of its budget is equipment, whether the supplier passes through the duty, and any resulting delivery or financing changes. This simple example is not a calculation of the December Section 232 minimum-price program.

Section 232 implementation. Commerce’s temporary anti-stockpiling rule is already effective from September 22 through December 3, 2026. Existing importers can face restrictions if volumes indicate stockpiling; new importers face quantity limits unless approved for a waiver. CBP’s implementation guidance explains the current entry requirements. Importers should also track covered HTSUS codes, minimum-price documentation, qualifying pre-proclamation contracts, special country rules, and the anti-stockpiling provision before the December 4 effective date.

Supplier-specific exposure. A country name alone is not enough to calculate AD/CVD liability. A low rate for one named respondent does not apply automatically to every manufacturer in that country.

Change-in-law and tariff clauses. Equipment contracts should say who bears a new duty, who can substitute modules, and what happens if a customs delay affects the construction schedule.

Procurement timing. Ordering early can reduce price uncertainty, but it introduces carrying costs and technology-mismatch risk. A useful procurement decision weighs tariff exposure against storage, insurance, financing, and project-readiness costs. Buying before December 4 does not bypass the anti-stockpiling rules already in force.

Policy concentration. A portfolio spread across markets and suppliers is less dependent on one country’s trade regime. Geographic diversification does not remove policy risk, but it can reduce the effect of a single tariff action on the overall portfolio.

Energea evaluates equipment pricing and trade-policy exposure as part of project underwriting rather than treating a headline tariff as a fixed portfolio-wide cost. The relevant question is whether the complete project—equipment, development, financing, construction, and operating assumptions included—still offers an attractive risk-adjusted return.

Portfolio diversification across markets.
Investment opportunities across more than one market can reduce dependence on a single trade regime, supply chain, or procurement outcome. Investors can review Energea’s current opportunities and each offering’s project-level details on the investments page.

Stage-gated development spending.
When a tariff change occurs before major construction spending, project assumptions can be retested before additional capital is committed. That discipline matters because the largest risk is often not the tariff itself, but continuing to fund a project whose procurement and return assumptions no longer hold.

Solar tariffs remain an important underwriting variable, especially when duties stack or a trade case disrupts a supplier. They are not, however, a complete investment thesis. Revenue contracts, operating performance, interconnection, financing, counterparty quality, and installed project cost all contribute to the final risk and return.