India’s solar capacity has expanded rapidly over the past decade, and most of that expansion sits outdoors exposed to weather for twenty-five years or more. Solar panel and module testing as per IS/IEC 61701 is required, as solar panels are installed in outdoor conditions where they have to face a different harsh environment. Salt air corrodes metal components and connections in ways that ordinary durability testing does not always catch. That is exactly the gap IS/IEC 61701 was designed to close.
For solar panel manufacturers, IS/IEC 61701 standard is not an optional add-on to general PV module testing. It is a specific requirement for panels destined for coastal or high humidity regions and increasingly a baseline expectation from buyers regardless of installation location. Working with a solar panel testing lab in India that understands this standard has become part of getting a solar panel ready for the market.
What is Solar Panel Testing Under IS/IEC 61701?
Solar panel testing under IS/IEC 61701 is a dedicated product testing for salt mist corrosion testing of photovoltaic modules. It evaluates how the materials and construction hold up when repeatedly exposed to salt-laden air over an extended period. This matters most for coastal installations and offshore projects but also applies to any panel that will spend decades outdoors without protection from the elements.
Solar panel testing services under the IS/IEC 61701 standard focus on corrosion resistance across the components most vulnerable to salt exposure:
- A team of testing experts closely examines metal structures and mounting parts. It is needed as long-term exposure to salty air can gradually weaken them.
- Electrical areas, including connectors and junction boxes are also tested. The corrosion here can cause power loss or create safety risks.
- Materials like the back sheet and encapsulant (protective layer surrounding solar cells) are reviewed for signs of breakdown that could let moisture enter.
- The condition of the glass surface and sealing edges is checked as well, since a compromised seal lets salt, laden moisture reach internal components
Testing under IS/IEC 61701 does not simply expose a panel to salt spray and check if it still works. It measures how the panel’s performance and safety characteristics change before and after exposure, which gives the manufacturers a clear picture of long-term reliability rather than a pass or fail snapshot.
How Are Salt Mist Performance and Durability Tested?
Salt mist testing is performed in a well-established cycle at a solar panel testing lab in India. The panels are placed in a salt spray chamber. A team of experts examine it for set periods and followed by drying phases. This whole process is repeated many times to simulate years of coastal exposure in a shorter time frame in the lab. The concentration of the salt solution and the duration of exposure are both specified exactly in the standard. This is to keep results consistent and comparable across different PV module testing labs in India.
Durability testing extends beyond salt mist alone as part of complete solar panel testing services in India. Panels are also evaluated for how they perform under combined stress since real-world conditions rarely involve just one factor. A coastal panel deals with salt air humidity temperature swings and UV exposure at the same time rather than one at a time. Solar module testing under IEC 61701 accounts for these overlapping stresses and gives manufacturers a more realistic picture of how a panel will actually perform once installed.
How Does Certification Support Market Access?
Certification of IS/IEC 61701 opens access to markets and projects that specifically require salt mist protection. This includes coastal solar farms, offshore installations and export markets in regions with high humidity or with marine exposure. In India, many large-scale solar procurement tenders now list this certification as a requirement rather than a preference. That makes solar panel testing services a practical necessity for manufacturers targeting utility scale projects.
Certification also supports a manufacturer’s broader quality claims. A panel warrantied for twenty-five years needs evidence behind that warranty. Salt mist testing at an accredited BIS approved test lab is one of the data points that supports long-term performance claims to both regulators and buyers. Solar panel manufacturers who skip this testing often find themselves excluded from tenders later, which costs more in lost opportunity than the testing itself would have cost upfront.
Working with a NABL accredited testing laboratory that understands both the technical testing and the certification documentation process helps manufacturers avoid delays that come from incomplete test reports or samples that were not prepared according to standard requirements.
Why Choose ACE Test Labs for Solar Panel and Module Testing?
ACE Test Labs is an established product testing lab in Sonitpat, India. We test solar panels and PV modules in accordance with ISO/IEC 61701 as a NABL-accredited facility working to ISO/IEC 17025 requirements. For manufacturers targeting coastal projects, export markets or large-scale tenders that require salt mist certification, working with an accredited solar panel testing laboratory means test results those developers and regulator recognize without requiring further verification.
Need solar module testing for your product? Contact Ace Test Labs for solar panel testing service under IS/IEC 61701 or check out the energy efficiency page on our website.