Performance changes gradually
PV modules are expected to lose a small amount of output over time. Performance warranties describe an allowed degradation path rather than promising identical output forever.
Home›How long do solar panels last?
HEY SOLAR KNOWLEDGE HUBHow long do solar panels last?
Solar panels are long-life assets commonly sold with lengthy product and performance warranties. They normally continue producing beyond the headline warranty period, but output gradually degrades and other components may need attention sooner.
THE SHORT ANSWER
Solar panels are long-life assets commonly sold with lengthy product and performance warranties. They normally continue producing beyond the headline warranty period, but output gradually degrades and other components may need attention sooner.
The inverter is separate
Inverters and batteries have their own lifecycles and warranties. Budgeting should consider the whole system, not only the panels.
Roof life matters too
If the roof is approaching major repair or replacement, deal with that in the project plan so panels do not need unnecessary removal and refitting.
Keep your documents
Retain warranties, commissioning information, serial numbers, monitoring access and installation certificates for future maintenance or property sale.
HOW WE HANDLE THE DETAIL
HEY Solar keeps technical and financial claims tied to the assumptions that make them true. Guidance is reviewed against authoritative UK sources and property-specific decisions belong in a survey and design.
Knowledge Hub review: September 2026.FROM RESEARCH TO REAL PROPERTY
Ready to test this against your home or business?
A quotation can use the actual roof, electricity use and project requirements rather than generic assumptions.