We placed a PO last month for Qcells modules out of Dalton, Georgia. The factory price was $0.28/W. A competitor quoted us $0.19/W for modules out of Vietnam. On paper, Vietnam wins. In reality, by the time those Vietnamese modules clear customs, pay AD/CVD duties, and absorb freight, the landed cost is $0.31/W — and they don't qualify for the 10% domestic content adder.
This is the math every contractor and developer is getting wrong in 2026. Not because they're bad at math, but because the tariff landscape is deliberately opaque. This article is the transparency we wish someone had given us five years ago.
Where Modules Are Actually Made in 2026
The solar module supply chain has six steps: polysilicon → ingot → wafer → cell → module → frame/glass/encapsulant. In 2026, no single country dominates all six steps. Understanding which step happens where is the key to understanding your true cost.
China: Still the Cost Floor
China produces roughly 85% of global polysilicon, 95% of wafers, and 80% of cells. Even "U.S. made" modules typically use Chinese polysilicon. The cost structure:
- Cell manufacturing cost: $0.08–0.10/W (TOPCon n-type)
- Module assembly cost: $0.03–0.05/W
- Total ex-factory: $0.11–0.15/W for 600W+ modules
Chinese manufacturers (Jinko, LONGi, Trina, JA Solar) can deliver modules at $0.15–0.18/W FOB Shanghai. That's the global price floor. But Chinese modules can't enter the U.S. directly without massive AD/CVD duties — so they route through Southeast Asia, Mexico, or sell into non-U.S. markets.
Southeast Asia: The U.S. Backdoor
Cambodia, Malaysia, Thailand, and Vietnam (CMTV) have been the primary assembly locations for U.S.-bound Chinese modules for a decade. The model: ship Chinese cells to SE Asia, assemble into modules, export to U.S. as "SE Asian" origin.
The DOC shut that down in 2024–2025. Final AD/CVD duties on CMTV modules range from 14.64% to 3,500%. Most major manufacturers are at 50–100%. The result: SE Asian module costs to the U.S. have effectively converged with domestic manufacturing.
Current landed cost from Vietnam/Thailand:
- Ex-factory module: $0.18–0.22/W
- Freight (container to LA/LB): $0.01–0.02/W
- AD/CVD duties (assume 50%): $0.09–0.11/W
- Section 201 tariff (bifacial excluded if applicable): $0.00–0.03/W
- Landed cost: $0.28–0.38/W
That's before customs clearance, brokerage, inland freight, and warehousing. The $0.19/W quote becomes $0.33/W before it hits your warehouse — and the duty rate could change mid-shipment.
India and Indonesia: The New Targets
In spring 2026, the DOC announced preliminary AD/CVD duties on solar cells and modules from India, Indonesia, and Laos. These countries had become the next backdoor after CMTV got closed. The new duties:
- India: CVD rates of 15–35%, AD rates of 20–60%
- Indonesia: CVD rates of 10–25%, AD rates of 15–40%
- Laos: CVD rates of 20–45%, AD rates of 25–70%
Laos got hit hardest because it was the most obvious circumvention route — virtually no domestic solar industry, suddenly shipping 5 GW of modules. The message from Commerce is clear: any country that becomes a Chinese module assembly point will get investigated.
Landed cost from India/Indonesia (post-duties): $0.30–0.40/W
U.S. Domestic: Higher Cost, Higher Certainty
U.S. module manufacturing capacity reached roughly 60 GW in 2025 — enough to supply about 70% of annual installations. But most of that capacity is final assembly only (module), not the upstream steps (cell, wafer, ingot, polysilicon).
U.S. cost structure by step:
| Step | U.S. Cost | Global Lowest (China) | U.S. Gap |
|---|---|---|---|
| Polysilicon | $12–15/kg | $6–8/kg | 2× |
| Ingot/wafer | Not commercially produced | $0.03–0.04/W | N/A |
| Cell | $0.18–0.25/W (pilot only) | $0.08–0.10/W | 2–2.5× |
| Module assembly | $0.08–0.12/W | $0.03–0.05/W | 2× |
| Glass/frame/encap | $0.03–0.05/W | $0.02–0.03/W | 1.5× |
Fully integrated U.S. module (all steps domestic): $0.35–0.50/W
U.S. assembly with imported cells: $0.25–0.35/W
U.S. assembly with imported wafers: $0.22–0.30/W
The $0.35–0.50/W number is the holy grail for IRA compliance — 65% domestic content by cost. Nobody is there yet. First Solar comes closest because CdTe thin-film doesn't use crystalline silicon at all, so "domestic" is easier to achieve.
Mexico: The Nearshoring Wildcard
Mexico has USMCA tariff-free access to the U.S. market. A module assembled in Mexico from imported cells ships duty-free. Several Chinese manufacturers have announced or built Mexican assembly plants (Jinko, LONGi, Trina).
Mexican module cost:
- Imported cells: $0.10–0.12/W
- Module assembly (Mexico): $0.04–0.06/W
- Freight to U.S. border: $0.005/W
- Total: $0.15–0.18/W — before 45X/48E considerations
The catch: Mexican assembly doesn't qualify for 45X manufacturing credits unless the cells are also made in Mexico. And Chinese-owned factories in Mexico may face FEOC scrutiny if Treasury determines the parent company is a foreign entity of concern. As of August 2026, that guidance is still pending.
Europe: Premium, Not Volume
European manufacturing (Meyer Burger in Germany, REC in Norway, Solitek in Lithuania) exists but is not price-competitive for the U.S. market. European module costs run $0.40–0.60/W. The only reason to buy European is:
- EU project requiring EU content
- Premium residential where "Made in Europe" is a selling point
- HJT or IBC technology not available from Asian suppliers
For U.S. contractors, European modules are irrelevant except as a price ceiling.
Tariff Stacking: How $0.20 Becomes $0.45
This is the part that breaks spreadsheets. A module doesn't pay one tariff. It pays all applicable tariffs, cumulatively.
The Stack (as of August 2026)
| Tariff | Rate | Applies To | Estimated Impact ($/W) |
|---|---|---|---|
| Section 201 (safeguard) | 14% (bifacial excluded) | All imported crystalline modules | $0.02–0.03 |
| AD/CVD (CMTV) | 14.64%–3,500% | Cambodia, Malaysia, Thailand, Vietnam | $0.08–0.20 |
| AD/CVD (India/Indonesia/Laos) | 25%–100%+ | India, Indonesia, Laos | $0.06–0.15 |
| Section 232 (polysilicon) | TBD (August 2026) | Imported polysilicon and derivatives | $0.02–0.05* |
| Reciprocal tariffs | 10%–49% | Country-specific (China 49%, SE Asia 24–48%) | $0.03–0.10 |
*Section 232 polysilicon tariffs announced August 6, 2026. Exact rates and scope still being determined.
Example: Vietnamese module, non-bifacial, shipped August 2026
- Ex-factory: $0.20/W
- Freight to LA: $0.015/W
- Section 201 (14%): $0.028/W
- AD/CVD (assume 60%): $0.12/W
- Reciprocal tariff (Vietnam 36%): $0.072/W
- Landed, duty-paid: $0.435/W
That $0.20 module is now $0.44. A domestic module at $0.32/W (Qcells Georgia, no tariffs) is cheaper. This is why the tariff wall exists — to make domestic manufacturing competitive.
Scale Economics: Residential vs. Commercial vs. Utility
The sourcing decision changes by project size because fixed costs (customs, freight, financing) are amortized differently.
Residential (5–15 kW)
Module cost is 30–35% of system cost. At residential scale, freight is per-module, not per-container. A 10kW system uses 20–25 modules. Shipping 25 modules LTL costs $300–500. That's $0.03–0.05/W just in freight.
Residential sourcing math:
- Domestic module ($0.30/W) + no tariffs + 10% domestic content adder = win
- Imported module ($0.20/W) + $0.15/W tariffs + $0.03/W freight = $0.38/W = lose
For residential, domestic is almost always the right call in 2026. The tariffs are designed to make it so.
Commercial (100 kW–5 MW)
Module cost is 20–25% of system cost. Freight is per-container. A 500kW system uses ~800 modules = 2 containers. Ocean freight is $2,000–4,000 per container = $0.005–0.01/W.
Commercial sourcing math:
- Domestic module ($0.28/W) + 10% domestic content adder = $0.28/W effective cost, +$0.03/W ITC bonus
- Imported module ($0.18/W) + $0.12/W tariffs = $0.30/W
At commercial scale, the math is closer. If the developer can claim the domestic content adder, domestic wins. If not (third-party owned systems sometimes can't), imported may be cheaper — but the tariff risk is real. A shipment that arrives after a duty rate change can destroy project margins.
Utility-Scale (50 MW+)
Module cost is 25–30% of system cost. Freight is negligible per-watt. A 100 MW project uses ~170,000 modules = 400+ containers. Ocean freight is $0.002/W.
Utility sourcing math:
- Domestic module ($0.25/W) + 10% domestic content adder = effectively $0.15–0.20/W after ITC
- Imported module ($0.15/W) + $0.10/W tariffs = $0.25/W
At utility scale, domestic content is almost mandatory for project economics. The 10% domestic content adder on a $100M project is $10M. That pays for a lot of extra $/W on the module.
But — and this is critical — most "domestic" modules at utility scale are assembled in the U.S. from imported cells and wafers. They don't meet the 65% domestic content threshold for the adder. Developers are scrambling to find modules that do, and as of August 2026, only First Solar and a handful of emerging integrated manufacturers (Qcells with their planned cell factory, Silfab) can deliver.
When Does Domestic Content Pay for Itself?
The domestic content adder is 10% of the ITC/PTC. For a 30% ITC project, that's an additional 3% of project cost. The math:
| Project size | Total cost | 30% ITC | 10% adder | Module premium | Payback? |
|---|---|---|---|---|---|
| 10 kW residential | $35,000 | $10,500 | $1,050 | $500–1,000 | Yes |
| 500 kW commercial | $835,000 | $250,500 | $25,050 | $15,000–25,000 | Yes |
| 100 MW utility | $120M | $36M | $3.6M | $5–10M | Maybe (depends on module premium) |
The residential and commercial math is straightforward: the adder pays for the domestic module premium. At utility scale, it depends on whether the developer can actually find a module that qualifies. As of mid-2026, that's the bottleneck.
What We're Seeing at the Counter
In July 2026, our top-selling modules were:
- Qcells XL-G11S 590W (Georgia) — $0.28/W, domestic content eligible
- Silfab Elite TOPCon 460W (Washington) — $0.30/W, domestic content eligible
- Jinko Tiger Neo 620W (imported, bifacial) — $0.22/W + tariff exposure
- VSUN 460W TOPCon (Texas assembly) — $0.26/W, partial domestic content
- First Solar Series 6 Plus (Ohio/Alabama) — $0.35/W, fully domestic, CdTe
The contractors buying Qcells and Silfab are the ones doing financed residential and commercial projects where the domestic content adder matters. The ones buying Jinko are doing cash deals or international projects. First Solar is almost exclusively utility-scale EPCs who need the adder to make their PPA pencil.
We're advising every contractor who asks: if your customer is claiming the ITC, spec domestic. The $0.03–0.05/W premium is irrelevant compared to the $0.10–0.30/W tariff risk on imports.
The Bottom Line
In 2026, solar module sourcing isn't about finding the lowest FOB price. It's about finding the lowest landed, duty-paid, risk-adjusted price — and factoring in whether the project can claim the domestic content adder.
The tariff wall has made domestic manufacturing competitive. The question isn't whether to buy domestic. The question is whether you can find domestic modules in stock, and whether they actually meet the 65% threshold.
We can help with the first part. The 65% threshold is between your customer and their tax advisor.
Need module pricing with full tariff transparency? Request a quote — we'll break out factory price, freight, duty exposure, and domestic content eligibility by SKU.
