What happens to solar panels at the end of their life?

End-of-life solar panels in the UK are recycled under the Waste Electrical and Electronic Equipment Regulations 2013 (WEEE Regulations). These regulations make panel producers (manufacturers) and importers legally responsible for taking back and recycling panels at end of life, at no cost to the owner. PV Cycle, the not-for-profit producer compliance scheme, operates the UK collection and recycling infrastructure. Modern panel recycling recovers 95%+ of the panel by mass — glass, aluminium, copper, silver, silicon. Most UK solar PV from 1995-2010 is still operational and producing, so genuine end-of-life recycling won’t be at scale until the mid-2030s through 2050s as 2010s-era installations begin to retire.

The WEEE Regulations and your rights

The WEEE Regulations 2013 (UK implementation of EU WEEE Directive) cover solar PV panels as Category 4 (large household appliances and consumer equipment). For commercial PV:

• The panel manufacturer/importer must register with a Producer Compliance Scheme
• They must finance collection and recycling
• The owner can dispose of panels at no cost via the scheme
• Disposal in general waste is illegal

PV Cycle (pvcycle.org.uk) is the dominant UK scheme. Most Tier 1 manufacturers are registered. When you decommission a system, contact PV Cycle or your installer — they arrange collection and recycling.

How recycling works

Modern PV recycling is done in three stages:

Stage 1: physical separation

• Panel disassembly: aluminium frame removed, junction box separated, cabling stripped
• Glass crushed and sorted (specialty solar glass with low iron content valuable for new panels)
• Polymer encapsulant removed via mechanical or thermal process

Stage 2: chemical / thermal processing

• Silicon wafers recovered via thermal (>500°C) or chemical etch
• Solder reflowed; copper, silver, lead recovered
• Polymer encapsulant either pyrolysed for energy recovery or shredded for backsheet feedstock

Stage 3: material refining

• Silicon refined to feedstock for new wafers (in some processes — most goes into glass, ceramics)
• Aluminium re-smelted
• Glass cullet sorted by colour and used in new glass production
• Copper and silver refined to bullion grade

Best-in-class processes recover 95-97% of the panel mass. Lab-scale processes have demonstrated 99% recovery.

The supply chain in 2026

The UK has limited but growing PV recycling capacity. Current routes:

• PV Cycle UK collection points: 30+ across England, Scotland, Wales
• Veolia ENVIRONMENT operates a glass-focused recycling line in Frome, Somerset
• EcoCom (Cumbria) specialises in large industrial WEEE recycling
• Some panels still exported to specialist EU plants (Veolia France, ROSI Solar France)

By 2030, with 2015-era residential installs starting to retire, UK domestic recycling capacity is expected to scale 5-10x.

What this means for your asset planning

For a system installed in 2026:

• Year 25 (2051): warranty period ends; panels still producing 87-90%
• Year 30-35 (2056-2061): typical economic end-of-life depending on grid prices
• Year 35+: physical end-of-life; recycling required

By that time, recycling will be a standard, fully-developed industry. Don’t let “what happens at end of life” influence a 2026 buying decision — the regulatory infrastructure ensures it’ll be handled.

Decommissioning checklist (when the time comes)

1. Notify DNO of intent to decommission (G99 schemes have de-energisation procedures)
2. Confirm SEG / export contract termination with supplier
3. Arrange MCS-certified contractor for safe removal
4. Engage WEEE-registered recycler (or your installer)
5. Document final EICR and removal certification
6. Update EPC if decommissioning materially affects rating
7. Notify insurer of system removal
8. Make-good roof penetrations and remove mounting hardware
9. Update property records / sales documents

Decommissioning cost for a 100 kW system: £8,000-£18,000 in 2026 prices. Recycling itself is free under WEEE, but labour for removal, scaffolding, and roof make-good is the real cost.

Repower vs decommission

When solar panels reach economic end-of-life, you don’t always remove them. Three options:

1. Continue running: panels at 80-85% nameplate still produce useful electricity. If grid prices stay high, continued operation makes sense for years past warranty end.
2. Repower: replace old panels with newer higher-output models on the same mounting and inverter system. A 100 kW 2010 system might be replaced with a 180 kW 2050 system on the same roof footprint, dramatically increasing generation. Cost: 50-70% of new install.
3. Full decommission: remove and recycle. Used when business is closing the site or the building is being demolished.

Most economically rational SMEs in 2050+ will repower rather than decommission, keeping the mounting and AC infrastructure but updating panels and inverters.

Common misconceptions about solar end-of-life

“Solar panels go to landfill” — illegal under WEEE. Doesn’t happen at scale.

“Recycling only recovers 50% of materials” — wrong for modern processes. 95%+ recovery achievable.

“You have to pay to dispose of panels” — wrong. WEEE puts the cost on the producer, not the owner.

“Panels become hazardous waste” — generally no. Some older cadmium-telluride thin-film panels classified as hazardous; almost all modern silicon panels are not.

“Old panels are worthless” — partially true. Recycling has positive value for high-volume processors but the costs of collection often net out the materials value. Repower is more often economic than recycle.

Next steps

For a 25-year asset plan including end-of-life, request a feasibility study. See panel lifespan, longevity practices, maintenance, cost guide, grants and funding. Donovan and team can advise on PV Cycle membership and decommissioning planning where required.