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For years, the global solar industry focused almost entirely on expansion. Massive solar farms were built across continents, installations surged and photovoltaic (PV) panels became one of the fastest-growing energy technologies in the world. Now, the industry is entering a very different phase – dealing with what happens when those panels begin reaching the end of their life, particularly the growing challenge of recovering valuable materials such as aluminium from ageing solar infrastructure.
A growing number of ageing solar assets, combined with falling module efficiency and large-scale repowering projects, is creating a new stream of solar waste across global markets. Industry projections indicate that discarded PV modules could reach several million tonnes by 2050, turning end-of-life management into one of the sector’s most urgent emerging issues.
At the same time, aluminium recovery is emerging as a major opportunity, with aluminium accounting for around 10-15 per cent of a typical solar panel alongside glass, silicon cells and trace metals such as silver and copper.
Old solar panels become valuable material banks
Most of the world’s solar installations are built using crystalline-silicon (c-Si) modules, which account for more than 90 per cent of installed capacity globally. These panels contain large volumes of reusable industrial materials, with glass typically representing around 65-75 per cent of a solar panel.
Recovering those materials, however, is far more complex than ordinary recycling.
Modern PV recycling systems now combine mechanical, thermal and chemical technologies to separate different layers and recover usable materials. Mechanical processing helps extract glass and metals, thermal treatment removes polymer layers, while chemical refining is used to recover higher-value materials including silver and copper.
Under optimised conditions, these systems can recover nearly 85-95 per cent of total panel material content, allowing recovered resources to flow back into manufacturing supply chains instead of ending up as landfill waste.
Explore: The most comprehensive and forward-looking industry-focused report – World Recycled ALuminium Market Analysis Industry forecast to 2032
Recycling becomes part of long-term solar strategy
The conversation around solar recycling is also changing rapidly. What was once viewed mainly as a waste-management issue is increasingly becoming a strategic supply-chain priority.
As global demand rises for materials such as silver, aluminium and high-purity silicon, recovering materials from ageing solar panels is becoming increasingly important for long-term resource security and cost stability.
The pressure is also growing because solar deployment itself continues accelerating. More installations today also mean more decommissioned modules tomorrow, particularly as older systems are replaced with higher-efficiency technologies.
That shift is gradually changing how solar projects are planned. Instead of treating recycling as a final-stage disposal issue, many companies are beginning to integrate end-of-life management into early project planning and asset management strategies.
Within this evolving landscape, companies such as GBP are integrating recycling solutions into solar asset management and repowering strategies, helping connect infrastructure upgrades with circular economy goals and long-term resource efficiency.
Explore our e-magazine Sustainability & Recycling: Aluminium’s Dual Commitment for the latest industry insights and trends

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Europe aluminium recycling facts: Amidst 8MT demand and 66% scrap export surge, recycling grows over 80%
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