Game Over For Silver Demand? World’s Largest Solar Manufacturer Longi Ditches Silver, Begins Using Copper For Solar Panels

“WE COULD SEE HUNDREDS OF MILLIONS OF OUNCES OF ANNUAL DEMAND DISAPPEAR FROM SILVER!”

THE LAST BULL STANDING: PETER SCHIFF EXPLAINS WHY THE GOLD & SILVER BULL IS STILL ALIVE!

 

China’s solar giant LONGi Green Energy has officially started production at its massive 21 GW back-contact (BC) cell line in Shaanxi province. This isn’t just another factory.
It’s the first gigawatt-scale deployment of their Alloy Contact Matrix (ACM) technology - which replaces most of the silver in solar cell metallization with copper.
The silver market just got a major new variable.

Let’s break it down.

2. WHY THIS MATTERS FOR SILVER

Silver has been one of the biggest winners from the solar boom. Photovoltaics already consume a huge and fast-growing slice of global silver demand - estimates suggest it could hit 10,000-14,000 metric tons per year by 2030 without major substitution (that’s roughly 320-450 million ounces annually).

LONGi’s move DIRECTLY attacks that demand.

3. What LONGi actually did

Instead of traditional silver paste for front and back contacts, LONGi’s new BC cells use copper-based metallization via their ACM process.
Back-contact cells are particularly well-suited for this switch (easier than TOPCon or HJT).

The goal: slash silver usage per watt dramatically - potentially by 70-90%+ in these cells - while maintaining high efficiency.

This is their response to sky-high silver prices that have hammered solar margins.

4. The scale is MASSIVE

• LONGi is the world’s largest solar manufacturer.
• 21 GW in one line is enormous (global solar additions are running ~500+ GW/year).
• If yields and reliability hold up, this becomes a blueprint other Chinese giants (Jinko, AIKO, etc.) will copy fast.

We’re not talking pilot lines anymore. This is commercial reality starting now.

5. Direct implications for silver demand

• Short-term: Limited immediate impact. This is one line from one company. But it signals the beginning of structural substitution in the highest-growth segment of silver demand.
• Medium-term (2027-2030): If BC + copper metallization scales across 20-30%+ of new capacity, we could see hundreds of millions of ounces of annual silver demand disappear from solar. That’s material in a market where total mine supply is ~800-900 Moz.
• Solar was supposed to be silver’s biggest growth driver. This throws a wrench in those bullish forecasts.

6. What this means for silver prices

Bullish silver thesis (monetary demand, supply deficits, industrial growth) is about to experience a REAL test.

If copper substitution works at scale and spreads:
→ Downward pressure on the silver price floor from solar.
→ Miners and investors who were counting on 10%+ annual demand growth from PV could be disappointed.

However, silver isn’t only solar. Other industrial uses (electronics, EVs, 5G, medical) are also growing. Plus, substitution isn’t free - copper has its own issues (oxidation, conductivity, long-term reliability).

7. The counterarguments (why silver bulls aren’t dead yet)

• Adoption won’t be instant. Yields, durability, and outdoor performance data from LONGi’s new line are still limited. Reliability questions remain.
• Not all solar tech is switching. TOPCon and HJT still rely heavily on silver. BC is growing but not dominant yet.
• Silver supply is tight. Mine supply has been flat-to-declining for years. Any demand destruction from solar could be offset by other sectors or investment demand.
• Price reaction already priced in?
  Silver has been volatile; markets may have partially anticipated this shift.

8. Who wins and who loses

Losers (short-term): Pure-play silver miners heavily exposed to solar demand.
Silver ETFs and leveraged plays could see pressure.

Winners: Copper producers (obviously), solar manufacturers’ margins, and anyone betting on lower solar costs accelerating adoption.

Longer-term silver bulls still have the monetary + green industrial supercycle narrative - but they now have to factor in technological substitution risk.

9.  What to watch next

• LONGi’s yield and reliability data over the next 6-12 months
• Whether other big players (Jinko, Trina, Canadian Solar) announce similar copper lines
• Actual silver demand numbers from PV in 2027-2028 reports
• Silver price reaction - does this news get “priced in” quickly or create a sustained downtrend?