12 September 2026
Executive Summary
The US Department of Commerce has finalised very substantial antidumping and countervailing-duty determinations affecting solar cells and panels imported from India, Indonesia and Laos.
Commerce concluded that producers in the three countries had sold solar products in the United States below fair value and had also benefited from government subsidies.
Final antidumping margins reported by Commerce include approximately:
- 123.04% for India.
- 94.36% for Indonesia.
- 65.43% for Laos.
Separate countervailing-duty rates are also substantial and vary by country and producer.
The process is not yet completely finished.
The US International Trade Commission must still make its final determination on whether the US industry has suffered material injury.
That distinction matters.
Businesses should therefore treat the Commerce decision as a major emerging trade-cost exposure, rather than assume every final duty order is already permanently in force.
The commercial direction is nevertheless clear.
Solar supply chains that shifted production away from China into South and Southeast Asia are facing another significant trade barrier.
UK Impact
UK businesses may not import these products into the United States directly.
But the decision can still affect:
- Solar-panel prices.
- Global module availability.
- Renewable-energy projects.
- Energy infrastructure.
- Supplier allocation.
- Project financing.
- Equipment lead times.
Manufacturers affected by the US measures may redirect products into Europe or other markets.
That could initially increase supply elsewhere.
But producers may also reduce capacity, change production locations or alter pricing.
The secondary market impact therefore may not be straightforward.
Global Impact
Solar manufacturing has spent several years shifting production across jurisdictions in response to:
- Tariffs.
- Antidumping measures.
- Subsidy investigations.
- Forced-labour rules.
- Local-content requirements.
India, Indonesia and Laos had become increasingly important suppliers to the United States.
US import data show dramatic growth from these markets over recent years.
The latest ruling illustrates an important supply-chain problem:
moving manufacturing geographically does not necessarily remove trade-policy risk.
Supply chains may relocate faster than regulatory exposure disappears.
Our View
Businesses planning solar and renewable-energy projects should monitor origin and trade exposure at component level.
Companies should ask:
- Where are solar cells manufactured?
- Where are modules assembled?
- Which jurisdiction determines origin?
- Are duties already included in supplier pricing?
- Could suppliers redirect production?
- Are alternative manufacturers qualified?
- Could delivery dates change?
- Are project budgets protected against tariff increases?
- Can equipment costs be passed through?
- Do financing models contain sufficient contingency?
- Could redirected supply reduce European prices?
- Could future trade action target other origins?
- Are long-term purchase contracts flexible?
- Are customs classifications independently verified?
The central lesson is that country diversification alone does not equal trade diversification.
Businesses need to understand not only where equipment is produced, but how that origin interacts with the destination market’s trade rules.
Risk Indicator: HIGH – SOLAR, TARIFFS & RENEWABLE SUPPLY CHAINS
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The information contained within these Market Alerts is provided for general market awareness and informational purposes only. It does not constitute financial, legal, investment, regulatory or insurance advice. Whilst every effort has been made to ensure accuracy at the time of publication using multiple reputable and independently verified sources, geopolitical events, legislation, regulation and market conditions may change rapidly. Readers should obtain appropriate professional advice before acting upon any information contained herein.
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