Key Takeaways 80% confidence
- A new US tariff and minimum import price on solar products, signed August 6, 2026 and taking effect December 4, targets polysilicon-based crystalline-silicon panels, not First Solar's cadmium telluride (CdTe) thin-film technology.
- First Solar's $1.1 billion Louisiana factory, which opened in Iberia Parish in 2025, is a 2.4-million-square-foot plant that turns raw glass into a finished CdTe panel in about four and a half hours, at up to twelve panels a minute.
- CdTe panels use a semiconductor layer made from cadmium and tellurium in place of silicon wafers, so the new tariff's polysilicon-linked price floors and 15% duty don't apply to them the way they apply to competing imports.
- China accounted for roughly three-quarters of the world's refined tellurium output in 2024 and added a permit requirement for tellurium exports in February 2025, tightening the supply First Solar and other CdTe makers depend on.
- Rio Tinto's Kennecott copper mine in Utah is one of only two US tellurium producers, recovering about 20 tons a year as a byproduct of copper refining, a reminder of how thin the domestic backup supply still is.
A new US tariff and price floor on imported solar panels takes effect December 4. First Solar's tellurium-based panels, built at its $1.1 billion Louisiana plant, aren't covered by it.
Analysis 80% confidence
First Solar's Iberia Parish plant is the newest piece of what the company calls a fully vertically integrated American manufacturing base. Construction broke ground in September 2023; the $1.1 billion, 2.4-million-square-foot building, about eleven times the size of the New Orleans Superdome, started making solar modules in July 2025, several months ahead of schedule, and had its formal ribbon-cutting that November. The plant now employs more than 700 people, a number First Solar expects to reach 826 by the end of the year, at an average compensation of roughly $90,000. Its production line is designed to take a raw sheet of glass in one end and hand back a finished Series 7 solar module about four and a half hours later, at up to twelve panels a minute when running at full rate, using glass sourced from Illinois and Ohio and steel fabricated into backrails in Louisiana. Once fully ramped, the site adds 3.5 gigawatts of annual manufacturing capacity, part of a US footprint First Solar expects to reach 14 gigawatts in 2026 and 17.7 gigawatts in 2027 once a newer South Carolina facility comes online.
The tariff arriving in December has nothing to do with that production line, and that's the point. Commerce Department data cited in the proclamation shows US polysilicon manufacturing capacity collapsed from roughly half the world's supply in 2005 to under 2% by 2024, leaving just two domestic producers, Hemlock Semiconductor in Michigan and Wacker Chemie in Tennessee. The new Section 232 measure responds to that collapse by setting minimum import prices across the whole polysilicon supply chain: $21 per kilogram for raw polysilicon, $100 per kilogram for ingots and wafers, $0.22 per watt for cells, and $0.38 per watt for finished modules, with a 15% duty layered on top of every tier except raw polysilicon itself. It replaces a narrower safeguard tariff from Trump's first term that expired in February 2026. First Solar's CdTe modules, however, don't derive from polysilicon at all, they're built around a cadmium-and-tellurium semiconductor layer instead of silicon wafers, and industry analysts tracking the rule, including a Section 232 breakdown published by solar-procurement platform Anza Renewables, say CdTe modules fall under none of the tariff's covered product codes. That leaves First Solar as one of the few US module makers with nothing to gain or lose directly from the new price floors, even as competitors reliant on imported crystalline-silicon cells face higher costs.
That's where tellurium comes in. Tellurium has no dedicated mines of its own; it's recovered almost entirely as a byproduct of copper refining, and China dominates that supply, accounting for roughly three-quarters of the world's refined tellurium output in 2024, according to US Geological Survey data. In February 2025, China's Ministry of Commerce and General Administration of Customs added tellurium, along with tungsten, bismuth, molybdenum and indium, to a list of items requiring an export license, not a ban, but a new layer of government approval standing between Chinese tellurium and the rest of the world. That control landed five months before First Solar's Louisiana plant started running, and it now sits underneath a US solar policy that, whether intentionally or not, favors CdTe technology over the polysilicon-based panels the tariff was built to protect. The result is a real tension: American demand for tellurium-based panels has a policy tailwind, while the metal that makes them possible remains concentrated in a supply chain increasingly subject to Chinese export approval.
Domestic backup supply exists but stays small. Rio Tinto's Kennecott copper operation in Utah, one of only two tellurium producers in the United States, recovers roughly 20 tons of the metal a year from its own copper-refining waste, a fraction of what a growing CdTe manufacturing base would need if Chinese supply tightened further. It leaves First Solar's expansion resting on a byproduct metal that nobody mines on purpose, at the same moment its main foreign source has started requiring a government permit to ship it out.
Why This Matters 70% confidence
Tellurium has no market of its own the way gold or copper does. Its supply rides on decisions copper refiners make about byproduct recovery, and no major futures exchange tracks its price the way the LME or COMEX track base metals. That makes policy moves like China's tellurium export licensing, or a US tariff that happens to exempt CdTe technology, unusually consequential for a metal this small: there's no deep, liquid market to absorb the shock. For India, which imports most of its solar-panel components and has its own ambitions to build domestic thin-film manufacturing, a US supply chain that's simultaneously growing CdTe demand and tightening around Chinese-controlled tellurium is one more sign of how concentrated the materials behind next-generation solar technology remain.
Price Impact
First Solar's CdTe manufacturing base is expanding under a US tariff structure that, as currently understood by analysts, favors it over polysilicon-based competitors, and that growth requires more tellurium at the same time China has added export licensing friction to the metal's dominant supply source. Both threads point toward tighter tellurium fundamentals rather than looser ones. The tilt is capped at moderate confidence because CdTe's tariff-exempt status isn't yet confirmed by formal Customs classification guidance, and tellurium's overall market is too small and byproduct-dependent for any single development to move it decisively.
Market Snapshot Computed live
Based on metalscost.com's own tracked India reference price as of 2026-08-30 (current). Volume and open interest aren't tracked by this site and are intentionally left blank rather than estimated.
Technical Analysis Computed live
Price is trading below both its 20-period and 50-period moving averages, a bearish alignment.
Breakout probability: Elevated — price is testing the bottom of its recent range.
Fundamental Analysis
Demand Drivers 76% confidence
Demand for tellurium is driven overwhelmingly by First Solar's cadmium telluride thin-film solar manufacturing, and that demand has a fresh policy tailwind: a new US tariff and price floor on polysilicon-derived solar products, effective December 4, 2026, raises costs for competing crystalline-silicon panels while leaving CdTe products outside the tariff's covered codes, according to industry analysts tracking the rule.
Supply Drivers 80% confidence
Tellurium has no dedicated mines; nearly all of the world's supply is recovered as a byproduct of copper refining. China accounted for roughly three-quarters of global refined tellurium output in 2024, and in February 2025 added tellurium to a list of minerals requiring an export license, adding a new layer of government approval to the supply First Solar and other CdTe manufacturers depend on.
Government Policies 78% confidence
The new Section 232 tariff structure is explicitly framed as a response to the collapse of US polysilicon manufacturing capacity, from roughly half of global supply in 2005 to under 2% by 2024, leaving only two domestic polysilicon producers, Hemlock Semiconductor and Wacker Chemie.
Trade Tariffs 82% confidence
A Section 232 proclamation signed August 6, 2026 imposes a 15% tariff plus minimum import prices on polysilicon-derived solar products, $21/kg for polysilicon, $100/kg for ingots and wafers, $0.22/watt for cells and $0.38/watt for modules, effective December 4, 2026. It replaces a narrower Section 201 safeguard tariff that expired in February 2026. Because First Solar's cadmium telluride panels don't derive from polysilicon, analysts say they fall outside the tariff's covered product codes.
Geopolitical Risks 70% confidence
China's February 2025 export license requirement on tellurium, alongside tungsten, bismuth, molybdenum and indium, adds a government-approval step to a supply chain the US solar industry is trying to grow domestically, at a time when broader US-China trade tension over critical minerals remains elevated.
Refinery Output 78% confidence
Rio Tinto's Kennecott copper operation in Utah, one of only two US tellurium producers, recovers roughly 20 tons of tellurium a year from its copper-refining byproduct stream, a small but real domestic supply source for CdTe manufacturers.
Country Impact 74% confidence
| Country | Impact | Reason |
|---|---|---|
| United States | High | Hosts First Solar's flagship $1.1 billion CdTe manufacturing plant and just enacted a tariff structure that leaves that technology outside its price floors while raising costs on competing crystalline-silicon imports. — First Solar's Iberia Parish, Louisiana plant reached full ribbon-cutting in November 2025 and is expected to help take the company's US manufacturing footprint to 14 gigawatts in 2026. |
| China | High | Supplies roughly three-quarters of the world's refined tellurium and added an export license requirement on the metal in February 2025, giving Chinese trade policy direct influence over a CdTe panel supply chain it doesn't manufacture at scale itself. — China's Ministry of Commerce and General Administration of Customs added tellurium to its controlled-export list alongside tungsten, bismuth, molybdenum and indium. |
Industry Impact 72% confidence
| Industry | Effect | Reason |
|---|---|---|
| Solar Panel Manufacturing | Positive | A new US tariff structure exempts cadmium telluride technology from the price floors and duties applied to polysilicon-derived panels, a relative competitive advantage for CdTe manufacturers like First Solar as import costs rise for crystalline-silicon competitors. |
| Semiconductor Manufacturing | Neutral | Cadmium telluride production depends on a tellurium supply chain increasingly subject to Chinese export licensing, a supply-side risk layered under an otherwise favorable US demand picture. |
Timeline
2025-02-04: China's Ministry of Commerce and General Administration of Customs implements export controls requiring a license to export tellurium, along with tungsten, bismuth, molybdenum and indium.
2025-07: First Solar begins solar panel production at its new Iberia Parish, Louisiana plant, months ahead of schedule.
2025-11-21: First Solar holds the official ribbon-cutting for the $1.1 billion, 2.4-million-square-foot Louisiana facility.
2026-08-06: President Trump signs a Section 232 proclamation imposing a 15% tariff and minimum import prices on polysilicon and its derivative solar products.
2026-12-04: The new tariff and price floors take effect for polysilicon-derived solar imports; First Solar's cadmium telluride panels remain outside the covered product codes.
Market Sentiment
Bullish Factors 76% confidence
- A new US tariff and price floor on polysilicon-derived solar products, effective December 4, 2026, raises costs for competing crystalline-silicon panels while leaving First Solar's cadmium telluride technology outside its covered codes, according to industry analysts.
- First Solar's US manufacturing footprint is expanding toward 14 gigawatts in 2026 and 17.7 gigawatts in 2027, growing structural demand for the tellurium its CdTe panels depend on.
- Tellurium has no dedicated mines, so supply can only grow when copper refiners choose to add recovery circuits, a slower, more constrained path than expanding output of a primary-mined metal.
Bearish Factors 66% confidence
- China's February 2025 export license requirement on tellurium adds friction to the same supply chain First Solar's expansion depends on, and China still supplies roughly three-quarters of the world's refined tellurium.
- Final US Customs classification guidance for the new tariff has not been issued; if CdTe modules end up covered after all, First Solar would lose its current cost advantage over crystalline-silicon competitors.
Alternative Scenarios 60% confidence
- If US Customs guidance ultimately classifies CdTe modules under the tariff's covered product codes, First Solar could face the same price floors as crystalline-silicon competitors, removing its current relative advantage.
- If more US copper refiners follow Kennecott's example and add tellurium recovery circuits, domestic supply could grow enough to reduce reliance on Chinese-controlled tellurium exports over time.
Who Benefits, Who Loses
| Party | Stance | Reason |
|---|---|---|
| First Solar and other CdTe panel manufacturers | Bullish | A new US tariff structure raises costs on competing crystalline-silicon imports while leaving CdTe technology outside its price floors, according to analysts tracking the rule. |
| US polysilicon producers Hemlock Semiconductor and Wacker Chemie | Bullish | The new price floors and 15% tariff on imported polysilicon-chain products protect the pricing of the only two domestic polysilicon producers left in the country. |
| US solar developers reliant on imported crystalline-silicon modules | Bearish | The new minimum import price of $0.38 per watt and 15% tariff on polysilicon-derived modules, effective December 4, 2026, raise costs for the panel technology most global manufacturers use. |
Investor Watchlist 74% confidence
Educational items to monitor — not investment advice.
- US Customs and Commerce Department guidance on whether cadmium telluride modules are formally classified under the Section 232 tariff's covered codes
- Whether China further tightens or eases its February 2025 tellurium export licensing requirement
- First Solar's progress toward its 14-gigawatt 2026 and 17.7-gigawatt 2027 US manufacturing capacity targets
- Announcements from other US copper refiners about adding tellurium recovery circuits to their anode-slime processing
Price Risks 68% confidence
- Tellurium supply is small, byproduct-only and concentrated in China, leaving it more exposed than most metals to a single country's export policy.
- Formal US tariff classification guidance could still bring CdTe modules under the same price floors applied to crystalline-silicon panels, changing the competitive picture the market is currently pricing in.
Historical Comparison
2018-2026 Section 201 solar safeguard tariff: The new Section 232 measure replaces a narrower solar safeguard tariff from Trump's first term that expired in February 2026, expanding tariff coverage across the full polysilicon supply chain instead of just finished cells and modules.
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