In short
IEC 61215 certifies a PV module's design and durability through tests such as thermal cycling, damp heat, humidity-freeze and mechanical load. IEC 61730 certifies its electrical and fire safety. Coastal and agricultural sites may also need salt mist (IEC 61701) and ammonia (IEC 62716) resistance, and many countries add their own listings.
Why module certifications matter
Solar modules must perform outdoors for 25 years or more. Certifications show that a module design has passed standardised stress testing, and they are often required for grid connection, permits, incentives and project finance.
IEC 61215: design qualification
IEC 61215 tests whether a module design withstands long-term outdoor exposure. The sequence includes thermal cycling, damp heat, humidity-freeze, UV exposure, mechanical load and hail impact, with power measured before and after to check degradation.
IEC 61730: safety qualification
IEC 61730 covers electrical and fire safety. Part 1 sets construction requirements and Part 2 the tests, such as insulation, wet leakage current and fire-related checks. It confirms the module is safe to install in a system at its rated voltage.
Tests for specific environments
For coastal or marine sites, look for salt mist corrosion testing to IEC 61701. For agricultural buildings, ammonia resistance to IEC 62716 is relevant. Potential-induced degradation (PID) testing is also commonly requested for large plants.
Country-specific requirements
Many markets add their own approvals, such as UL 61730 in North America, BIS registration in India, CEC listing in Australia and MCS in the UK. State the destination country so the right certificates are included.
What to check on a datasheet
| Item | What to look for |
|---|---|
| Power and tolerance | Rated Pmax and positive-only tolerance |
| Temperature coefficient | Lower Pmax coefficient performs better in heat |
| Certifications | IEC 61215, IEC 61730, plus local listings |
| Warranty | Product warranty and linear performance warranty |
| Degradation | First-year and annual degradation figures |