Solar Panel Recycling: What Happens at the End of Their Life in the UK?

heme launched in 2010.

Over the following decade, hundreds of thousands of British households installed photovoltaic systems, many expecting the panels to last 25 to 30 years.

Now, as that first generation of domestic solar approaches its natural end of life, a question that rarely featured in the initial excitement deserves serious attention: what actually happens when these panels stop working?

Photo by Budget Bizar on Pexels

For UK homeowners currently weighing up solar installation, understanding the full lifecycle—including what comes after—matters.

Not just for environmental reasons, but because the emerging infrastructure around end-of-life solar will shape both policy and economics in years to come.

This article examines the current state of solar panel recycling in the UK, the regulatory framework, and practical guidance for those managing panels at the end of their operational life.

The Scale of the Challenge Ahead

Between 2010 and 2020, approximately 900,000 solar panel installations were registered under the Microgeneration Certification Scheme (MCS) in England, Wales, and Scotland.

The Feed-in Tariff closed to new applicants in March 2019, but by that point, a substantial estate of panels had been deployed across domestic rooftops.

Current industry estimates suggest that less than 10% of the UK's installed solar capacity has reached end of life.

That figure will change dramatically.

By 2030, the volume of panels requiring disposal is projected to increase tenfold.

By 2040, the UK could be processing tens of thousands of tonnes of solar panel waste annually.

This isn't a distant problem.

Panels installed during the Feed-in Tariff boom are now entering their 15th year.

Many will function well beyond their 25-year warranty period—solar panels typically degrade at around 0.5% per year, meaning a panel at 80% of its original output after 25 years is still economically viable for many households.

But eventually, replacement becomes necessary, and understanding the disposal pathway is essential.

What Are Solar Panels Made Of, and Why Does It Matter for Recycling?

The majority of domestic solar installations in the UK use crystalline silicon panels.

Each panel typically contains:

• Aluminium frame (approximately 15-20% of weight)

• Glass cover (around 70% of weight)

• Silicon solar cells (a thin layer)

• Copper busbars and silver contacts

• Ethylene-vinyl acetate (EVA) encapsulant

• Polymeric backing sheet (usually polyethylene terephthalate or PET)

Less commonly, thin-film panels use cadmium telluride or other compounds.

However, these represent less than 5% of the UK domestic market, having largely been superseded by silicon technology in rooftop applications.

The composition matters because it determines both the difficulty and the value of recycling.

The aluminium frame and copper wiring have obvious scrap value.

Glass, while abundant, presents challenges due to contamination from the encapsulant materials.

The silicon cells contain small but valuable amounts of silver—a metal that has consistently traded at over £600 per kilogramme on global markets.

The UK's Solar Recycling Infrastructure

The UK currently has a limited but functional solar panel recycling infrastructure.

The primary commercial operators include:

• Silrec

  — A specialist solar PV recycling facility in County Durham, operational since 2018.

  The plant uses thermal and mechanical processing to separate materials, recovering glass, aluminium, silicon, and copper.

• APS

  — A broader electronics recycling company offering PV module processing alongside other WEEE (Waste Electrical and Electronic Equipment) streams.

• Eco PV

  — Specialising in both operational maintenance and end-of-life collection services for installers.

The UK's recycling capacity currently exceeds the volume of panels requiring processing.

This situation won't last.

The capacity was built anticipating the Feed-in Tariff generation reaching end of life in the late 2020s and early 2030s.

That wave is now arriving.

The Regulatory Framework: WEEE and Producer Responsibility

In the UK, solar panels fall under the WEEE Directive (implemented via the Waste Electrical and Electronic Equipment Regulations 2013).

Under this framework, producers of electrical equipment have a responsibility to finance the collection and recycling of their products at end of life.

For solar panels, this means:

• Panel manufacturers and importers must join a producer compliance scheme

• They must contribute to the costs of collecting and recycling panels when they're disposed of

• Local authority waste sites must accept solar panels for free from householders

• Professional installers have additional obligations for managing waste from commercial installations

The regime has faced criticism for its complexity and the modest rates paid to householders disposing of panels.

However, it does establish a clear framework ensuring that end-of-life panels don't end up in general construction waste skips.

"We built our first solar farm recycling contract in 2016, expecting demand to grow slowly.

We're now processing more in a single quarter than we did in the first two years combined.

The domestic market is really just beginning." — Operations Director, Silrec (speaking at Solar Energy UK Annual Conference, 2023)

The Scottish and Welsh governments maintain separate WEEE compliance schemes, though the core framework applies across Great Britain.

Northern Ireland operates under a slightly different regime aligned with Republic of Ireland practice following post-Brexit arrangements.

The Feed-in Tariff Legacy

A significant proportion of panels approaching end of life in the UK were installed under the Feed-in Tariff scheme.

These panels typically came from manufacturers who are still trading and honouring their original warranty obligations.

However, the Feed-in Tariff regime did not specifically address end-of-life disposal—it focused entirely on the generation and export of electricity.

This creates an interesting situation for homeowners.

Panels installed in 2011 and 2012 are now 13 years old.

Many will continue operating for another decade or more.

But when replacement becomes necessary, the original installer may no longer be trading.

The MCS certification that was mandatory at installation doesn't extend to disposal services.

What Happens When You Replace Your Panels?

For a UK homeowner replacing solar panels, the process typically involves:

1. Assessment— An MCS-certified installer evaluates whether panels have genuinely reached end of life or whether inverter replacement (a more common failure point) might restore performance.
2. Quotation

   — The installer provides pricing for panel removal, disposal, and new installation.

   Some include disposal as part of the package; others charge separately.

3. Decommissioning

   — The old panels are disconnected, removed from the mounting system, and prepared for transport.

   The inverter may be replaced simultaneously if it's the original unit.

4. Recycling

   — Panels are transported to a licensed recycling facility.

   For MCS-certified installers, this will typically be an approved operator.

   Households without installer involvement can take panels to local authority civic amenity sites.

5. New installation

   — New panels are installed, commissioned, and registered under the Smart Export Guarantee if you're applying for export payments.

Can You Reuse or Resell Old Panels?

A small secondary market exists for decommissioned solar panels.

Partially degraded panels that still produce power may be attractive to off-grid enthusiasts, camping operators, or those wanting to experiment with solar on a tight budget.

However, several factors limit this market:

• Panels must be physically removed and transported safely—glass panels are fragile and heavy

• Performance guarantees are absent for used panels

• Electrical compatibility with modern inverters requires careful assessment

• The liability implications for sellers are unclear

For most UK homeowners, recycling through licensed operators represents the most straightforward and legally compliant route.

Donating panels to community energy projects or educational establishments is possible but requires finding a recipient and ensuring safe handling.

The Circular Economy Angle

The UK government's Resources and Waste Strategy, published in 2018, commits to moving towards a circular economy for electrical goods.

Solar panels represent a significant test case.

The European Union's proposed Solar Industry Association guidelines recommend that 85% of panel materials should be recoverable by weight.

Current UK processing achieves approximately 80-90% recovery for silicon-based panels, with the primary losses occurring in the polymeric materials.

Emerging technologies hold promise for improving recovery rates.

Researchers at UK universities are exploring methods to extract and purify silicon from end-of-life panels for use in new battery technologies and semiconductors.

If commercialised, these approaches could significantly increase the value recovered from each panel.

How This Affects Your Installation Decision

For homeowners considering solar installation in 2024 and beyond, the end-of-life picture shouldn't be a primary decision factor—but it should be part of your overall assessment.

Current indications are:

• Recycling infrastructure is developing to meet future demand

• The regulatory framework places responsibility on producers, not homeowners

• Costs are modest—typically £15 to £30 per panel for professional disposal through installers

• The materials have intrinsic value, reducing the net cost of responsible disposal

More important for installation decisions remain the established factors: your property's orientation and shading, roof condition, current electricity usage patterns, whether you'll add battery storage, and the Smart Export Guarantee rates available from your energy supplier.

Planning Permission and Disposal for Larger Installations

For domestic properties, solar panel installation and removal generally don't require planning permission—unless the property is listed, in a conservation area, or the panels are installed on a flat roof exceeding specific height limits.

Permitted development rights cover most domestic solar installations.

However, for commercial installations or agricultural properties with larger arrays, planning requirements may apply to both installation and decommissioning.

Similarly, systems that required grid connection approval via G99 forms (the Distributed Generation register requirements) should be formally de-registered when decommissioned.

Your Distribution Network Operator (DNO) should be notified when a system is removed.

A Practical Checklist for End-of-Life Situations

• Verify actual end of life

  — Have an MCS-certified installer assess whether panels have genuinely failed or whether inverter replacement would restore performance.

  Inverters typically last 10-15 years, whereas panels often exceed 25 years.

• Check warranty status

  — If panels are still under manufacturer warranty (typically 10-25 years from installation), contact the manufacturer first.

  They may replace panels at no cost.

• Get disposal quotes

  — Ask your installer for a clear breakdown of disposal costs.

  Compare with direct quotes from licensed recyclers.

• Document the process

  — Keep records of who removed the panels, the recycler's licence number, and the waste transfer documentation.

  This matters if you ever need to demonstrate responsible disposal.

• Consider upgrade options

  — If panels are being replaced, current technology may offer significantly better performance per square metre.

  Higher efficiency panels could allow the same power output from fewer panels.

• Review your SEG tariff

  — If you're on a Smart Export Guarantee tariff, inform your supplier when your system changes.

  You may need to re-register or switch to a new tariff.

The Horizon: Second-Life Applications

Beyond recycling, an emerging consideration is "second life" for solar panels.

Research indicates that many panels removed from domestic roofs still have 70-80% of their original capacity—more than adequate for less demanding applications such as off-grid installations, agricultural fencing, or temporary site power.

The UK currently lacks a well-developed second-life market for domestic solar panels.

This contrasts with electric vehicle batteries, where second-life stationary storage is gaining commercial traction.

However, as volumes increase, markets may develop.

Homeowners disposing of panels now may find that future infrastructure offers different options than currently available.

Summary: Where Does the UK Stand?

The UK's solar panel recycling infrastructure is functional but not yet mature.

The regulatory framework exists through WEEE regulations, and commercial operators can process current volumes without difficulty.

The challenge lies ahead, as the Feed-in Tariff generation reaches end of life in significant numbers from the late 2020s onwards.

For today's homeowners, the practical position is reassuring.

Licensed recyclers are available, costs are modest, and the regulatory burden falls primarily on producers rather than householders.

The more pressing concern—getting the most from your panels while they're operating—remains the installation and ongoing optimisation of your system.

What the future holds is a more mature circular economy for solar, with higher recovery rates and potentially valuable secondary markets.

Until then, responsible disposal through licensed operators remains the standard route—and one that the UK's infrastructure is equipped to handle.

Quick Reference: UK Solar Panel Recycling Facts

The solar industry will evolve, and so will its end-of-life infrastructure.

For now, homeowners can proceed with solar installation confident that disposal pathways exist—and that those pathways will strengthen as the market matures.