Short answer: Vietnam and Malaysia are both major Southeast Asian solar-manufacturing hubs — and both sit in the crosshairs of US anti-dumping and countervailing duty (AD/CVD) investigations. This is an industry where the location decision cannot be separated from three trade-law variables: (1) US AD/CVD duties applied by country of origin; (2) UFLPA enforcement on polysilicon; and (3) origin rules when pivoting to the EU, India or Middle Eastern markets. Vietnam wins on industrial-cluster scale and competitive electricity prices; Malaysia wins on policy stability and a neutral position in global supply chains.
1. US AD/CVD: the industry’s biggest variable
The unavoidable backdrop: the United States has investigated anti-dumping and countervailing duties on solar cells and modules imported from four Southeast Asian countries — Cambodia, Malaysia, Thailand and Vietnam — with the US Department of Commerce (DOC) issuing final determinations carrying significant duty rates per company and country (exact company-level rates require consulting the DOC’s original determinations at the time of implementation — this article states no specific figures).
Practical consequences for investors:
- Neither Vietnam nor Malaysia “dodges” AD/CVD if the US is the primary market — both countries are covered. The maths becomes: which cost structure absorbs AD/CVD rates while staying competitive, or which strategy pivots volume to other markets (EU, Middle East, India, domestic).
- Circumvention risk: the US can investigate duty circumvention — routing components through a third country to “wash” origin may trigger follow-on investigations. Every supply-chain design must be reviewed by US trade counsel.
- Company-specific rates: in AD/CVD cases the DOC typically sets individual rates for investigated, cooperating exporters (based on actual dumping/subsidy margins) and a higher all-others rate for non-cooperating firms. Investigation-response strategy (counsel, data submission) is part of the investment cost, not an afterthought.
2. UFLPA and polysilicon: the supply-chain chokepoint
Polysilicon — the head of the solar value chain — is a priority enforcement commodity under America’s UFLPA (Uyghur Forced Labor Prevention Act), because a large share of global polysilicon originates from the monitored region. US Customs applies a “rebuttable presumption”: goods with inputs from the region are detained by default, and the importer must prove otherwise with complete traceability dossiers.
Both Vietnam and Malaysia must build “clean”, fully documented polysilicon/wafer supply chains for US-bound output. Whichever country already hosts wafer/cell suppliers accepted by the US market offers a faster start — and that is a supplier-by-supplier field survey, with no country-level universal answer.
3. Production conditions compared: power, land, incentives
- Industrial electricity prices: solar manufacturing (especially ingot-pulling and wafer-slicing) is power-hungry. Vietnam offers competitive industrial power tariffs in the region — one reason manufacturers chose Vietnam. Malaysia has stable supply under a different market mechanism; real quotes at the specific site are needed.
- Industrial land: both countries hold industrial-park land banks for large-scale projects; Vietnam has an edge in site-clearance speed at certain key industrial localities (verify per project).
- High-tech incentives: both Vietnam (high-tech investment incentives, high-tech parks) and Malaysia run policies courting technology projects — exact incentive levels need confirming with the investment promotion authority at decision time.
- Vietnam’s legal framework: a foreign investor’s solar project follows Law 143/2025/QH15 (effective 1 March 2026) and Decree 96/2026/ND-CP; corporate income tax 20%; the global minimum tax (Resolution 107/2023/QH15) for groups above EUR 750 million. Malaysia’s framework should be confirmed with local counsel.
4. Alternative markets beyond the US: EU, Middle East, India
When AD/CVD duties squeeze the US market, the factory needs “escape hatches” to other markets — where FTAs matter:
- EU: Vietnam holds the EVFTA — solar cells and modules exported to the EU enjoy a phase-out to zero duty (subject to origin rules). Malaysia has no EU FTA (status as of this article’s writing — latest not verified).
- India: a giant solar market but with strong domestic-manufacturing protection (high import duties, localisation requirements) — difficult exports from both countries; needs specialist advice.
- Middle East: booming solar-power demand with fewer tariff barriers; both countries have opportunities, competing on price and trade relationships.
- RCEP: both are members — helpful for intra-bloc supply chains (wafers, equipment from China, Japan, Korea).
5. Worked scenario: a Chinese manufacturer seeking a “non-China” base
A Chinese solar manufacturer wants a 5 GW plant in Southeast Asia serving the US and EU markets, avoiding a “Made in China” label:
- AD/CVD risk: Vietnam or Malaysia — both face the US AD/CVD duties already imposed on both countries. “Avoiding China” does not mean “avoiding US duties”. The realistic play is modelling post-duty margins, or rebalancing markets (more EU/Middle East share).
- Circumvention risk: bringing Chinese wafers/polysilicon for simple assembly before US export may trigger a DOC circumvention inquiry. The degree of processing in the host country must amount to “substantial transformation” — US trade counsel must validate the chain design.
- UFLPA: polysilicon must be of provable origin, segregated from the monitored region — identical in both countries.
- EU: Vietnam holds the EVFTA edge for volume redirected to the EU.
Conclusion: for this profile, no country is absolutely “safe” for the US market; Vietnam edges ahead on the EU escape hatch (EVFTA) and an established industrial cluster.
6. Checklist for solar investors
- Pull the latest DOC AD/CVD determinations for each country/company — mandatory input to the financial model.
- Have US trade counsel review the supply-chain design before locking the location (circumvention risk).
- Build a fully traceable polysilicon/wafer chain for UFLPA from day one.
- Cross-check HS codes against the EVFTA phase-out schedule and origin rules for EU-bound volume.
- Obtain real industrial-power quotes and confirm supply capacity at the specific site.
- Model corporate tax after incentives and after QDMTT (for large groups).
- Consult local counsel on the latest IRC procedures and high-tech incentives.
7. Scope note
This article compares at framework level. Specific AD/CVD rates, US trade policy and Malaysian law change continuously; investors must work with international trade counsel and local counsel before deciding. Vietnamese legal instruments were checked for validity as of 18 October 2026.
Frequently asked questions
1. Does a solar factory in Vietnam or Malaysia avoid US AD/CVD duties?
Neither — both Vietnam and Malaysia are covered by US solar AD/CVD investigations. Realistic strategies are modelling duty absorption, responding to investigations to earn lower company-specific rates, or redirecting part of output to other markets (the EU via Vietnam’s EVFTA, the Middle East and others).
2. Are US AD/CVD duties set by country or by company?
Both: the DOC sets individual rates for investigated, cooperating exporters (based on actual dumping/subsidy margins) alongside a higher all-others rate for non-participants. Hiring counsel to respond to an investigation therefore has direct economic value.
3. How does the UFLPA affect the solar supply chain?
Polysilicon is a UFLPA priority-enforcement commodity. US Customs applies a rebuttable presumption to goods with inputs from the monitored region — businesses must rebut with complete traceability dossiers. The supply chain must be designed “clean” from the start.
4. What is a circumvention investigation?
A US mechanism investigating the shift of simple production steps to a third country to evade AD/CVD duties. If processing in the new country does not amount to “substantial transformation”, the DOC may extend duty coverage. Supply-chain design must be reviewed by US trade counsel.
5. What is the benefit of exporting solar panels to the EU from Vietnam?
Vietnam’s EVFTA phases duties on solar cells/modules to zero (subject to origin rules) — a key “escape hatch” when the US market turns difficult. Malaysia has no EU FTA and lacks this advantage.
6. Is electricity price the deciding factor between Vietnam and Malaysia?
Important but not decisive: cell/wafer manufacturing is power-intensive, so tariff gaps feed directly into cost. In this industry, however, AD/CVD duties and UFLPA risk usually dominate the decision more than power-price differences.
This article has been quality-reviewed by the FLAW AI Legal Council