Silver Price Surge Undermines PV Cost Reduction Paradigm

Silver Price Surge Undermines PV Cost Reduction Paradigm: Industry Shuffle Accelerates, with Silver Reduction/Substitution and Cost Pass-Through as Imperatives

Recently, international silver prices have experienced a dramatic surge. Spot silver has soared from approximately $30 per ounce at the start of 2025 to $67 per ounce on December 19, representing a 132.11% year-to-date increase—far outpacing gold’s 63% gain over the same period. On December 3, it even breached $58.97 per ounce, hitting an all-time high. As a core conductive material in the photovoltaic (PV) industry, silver’s structural shortage and skyrocketing prices are undermining the cost reduction paradigm that the PV sector has relied on for years. This is forcing the industry to accelerate technological substitution or cost pass-through, triggering an imminent industry reshuffle.

Silver’s Rally: Not Short-Term Speculation, But Structural Supply-Demand Imbalance

Unlike short-term futures speculation, the core driver behind this silver rally lies in global structural supply-demand imbalance. On the demand side, the explosive growth of the new energy industry has elevated silver to the status of an "essential commodity." Notably, the PV industry has emerged as the largest silver user. According to industry data, global silver consumption for PV applications reached 7,560 tons in 2025—doubling 2022 levels—and accounting for 55% of total global silver demand (up from just 20% in 2022). Each gigawatt (GW) of PV installed capacity requires 8-10 tons of silver. With global new PV installations projected to exceed 600 GW in 2025, silver consumption in the PV sector alone will surpass 5,000 tons annually. Additionally, new energy vehicles consume seven times more silver than traditional fuel vehicles (25-50 grams per vehicle). Combined with surging demand from emerging fields such as AI servers and 5G base stations, this further intensifies pressure on silver supply.

Supply-side shortages have exacerbated price volatility. Currently, global annual silver mine output has long stagnated at around 26,000 tons, with 72% of silver produced as a byproduct of major metals like copper, lead, and zinc—independent silver mines account for a negligible share. The expansion cycle for byproduct mines stretches 5-8 years, making short-term supply increments unfeasible. Meanwhile, output from major producing countries continues to decline: Mexico, the world’s top silver producer, saw a 3% year-on-year drop in 2024, while China’s output fell 5% year-on-year amid stricter environmental policies. Amid this supply-demand gap, global silver inventories have plummeted to a historic low, sufficient to cover just 1.2 months of consumption, with the structural shortage unlikely to reverse in the short term. The industry widely acknowledges that silver has transitioned from a traditional precious metal to a core strategic industrial metal in the new energy era, serving as a "critical material for power transmission and distribution" in the sector.

PV Industry Under Strain: Silver Paste Costs Surpass Silicon Wafers to Become Top Cost Driver

Silver’s core application in the PV industry is silver paste, which acts as the "blood vessels" of solar cells—forming conductive grids on cell surfaces to collect current. Each solar cell consumes approximately 50-70 milligrams of silver paste (equivalent to 1/10 the weight of a paper clip), yet its cost share is staggering.

With silver prices skyrocketing, silver paste costs have officially overtaken silicon wafers to become the most expensive material in solar cells. Data shows that in current mainstream TOPCon batteries, silver paste accounts for over 30% of total cell costs and more than 50% of non-silicon costs. At the current silver price of $67 per ounce, silver paste costs for each GW of solar cells reach as high as 240 million yuan (approximately $33.6 million based on current exchange rates). Rising silver prices have triggered a chain reaction: every 15% increase in silver prices adds roughly $0.0043-$0.0057 per watt to PV module costs, directly eroding corporate profits. Recently, numerous PV companies have announced successive module price hikes. On December 19, Longi Green Energy explicitly stated it would raise module prices by $0.0028-$0.0057 per watt, citing rising silver prices as the primary cost driver.

Technological Paradox: High-Efficiency TOPCon Trapped in "More Advanced = More Silver-Intensive" Dilemma

Notably, high-efficiency TOPCon technology—currently the focus of the PV industry’s advancement—faces an awkward paradox: "the more advanced the technology, the greater the silver consumption." Due to TOPCon batteries’ double-sided design, both front and back surfaces require silver paste coating. Additionally, their more complex electrode structures result in silver paste consumption that is over 30% higher than the previous-generation PERC technology.

Industry data highlights significant disparities in silver paste consumption across battery technologies: PERC batteries consume 6-8 mg/W, TOPCon batteries 10-13 mg/W, BC batteries 14 mg/W, and unoptimized HJT batteries as much as 15-17 mg/W. Particularly, the 640W+ high-efficiency TOPCon modules currently promoted in the market consume 30% more silver than standard TOPCon modules—and even 35% more than BC modules. This means that as PV technology advances toward higher efficiency, it simultaneously amplifies silver cost pressures. If silver prices continue to rise, the cost of high-efficiency TOPCon modules may exceed that of BC modules, severely undermining their market competitiveness.

Breakthrough Paths: Dual Tracks of Silver Reduction/Substitution and Cost Pass-Through

Silver’s skyrocketing prices have shattered the PV industry’s core cost reduction logic, making accelerated industry reshuffling inevitable. Faced with this "silver bottleneck," PV companies are expediting two breakthrough paths: technological substitution with silver reduction optimization, and cost pass-through to downstream sectors.

On the technical front, silver reduction and substitution technologies have entered large-scale application. Among these, 0BB (Busbarless) technology can cut silver paste consumption by 20-40%, reducing costs to $0.0014-$0.0085 per watt. Silver-coated copper paste achieves cost savings by lowering silver content to 30%; it is already widely used in HJT batteries and is projected to capture 92% of the market in 2025. Low-silver TOPCon technology, through specialized electrode design, reduces silver consumption to 7 mg/W—a 40% decrease—with only a 0.1-0.2% efficiency loss. Furthermore, the technical route of replacing silver with copper has begun trial mass production in BC batteries, emerging as a key direction for long-term substitution.

On the cost pass-through front, a wave of PV module price hikes has recently swept the industry. Beyond Longi Green Energy, leading companies such as JinkoSolar and Trina Solar have all raised product quotes, attempting to transfer cost pressures from rising silver prices to downstream buyers. Industry insiders analyze that regardless of whether companies choose technological substitution or cost pass-through, small and medium-sized enterprises (SMEs) will face heightened survival challenges due to weak capital strength and slow technological iteration—likely driving further industry consolidation.

Notably, this silver price surge has also prompted the industry to re-examine its material cost structure, with "moving beyond silicon dependency and vigilance against silver risks" becoming a universal consensus. Looking ahead, competition in the PV industry will not only hinge on efficiency but also on material cost control and technological substitution capabilities. Silver has emerged as the next critical "make-or-break factor" for the PV industry.