What the standard defines
IEC 61215 subjects a module design to a sequence of accelerated stresses: hundreds of thermal cycles, damp heat, humidity freeze, ultraviolet exposure, mechanical load in both directions, hail impact and hot-spot endurance. Power is measured before and after, and the design passes only if the loss stays inside a defined limit.
It is a qualification of a DESIGN rather than a test of the module you receive, which is why serial production quality is a separate matter that the maker manages.
What it does not promise
It does not predict a lifetime. The sequence is accelerated and does not reproduce twenty years on a specific roof. A module that passed can still lose output faster in a hot, humid climate than in a temperate one.
It also says nothing about the junction box beyond what the sequence exposes, nothing about the connectors fitted to the leads, and nothing about the mounting the module ends up in.
What it works with
The standard is cited on the datasheets of rigid modules and on many folding panels, usually alongside IEC 61730 for construction safety. On this site it is read with the maker’s warranty terms, which are two separate promises — one on the product, one on output after a stated number of years — and neither is the standard.
What people ask before they order
Does IEC 61215 mean a panel lasts 25 years?
No. It means the design survived an accelerated sequence of stresses within a stated power loss limit. Longevity in a particular climate is a separate question, and the maker’s performance warranty is a separate document again.
What is the difference with IEC 61730?
IEC 61215 is about design qualification and performance after stress; IEC 61730 is about electrical safety construction. Most serious modules cite both, and this site reports whichever the maker names.
Last reviewed 16 September 2026