Deadline for BIS Certification of Inverters Gets 3 Month Extension

The Ministry of New and Renewable Energy (MNRE) has extended the deadline for self-certification of solar inverters through the BIS, again.

The Ministry of New and Renewable Energy (MNRE) has extended the deadline for self-certification of solar inverters through the Bureau of Indian Standards (BIS), again.

In its notification, the ministry has cleared that considering the issues relating to testing, and the level of preparation of test labs, the industry had sought more time for compliance, and therefore it has extended the deadline again. However, the deadline is subject to the condition that manufacturers have valid International Electrotechnical Commission (IEC) accreditation and test reports from international test labs for the smooth implementation of the order.

The new deadline for self-certification has been set for December 31, 2019, getting a 3-month extension from the previous deadline of September 30, 2019.

Prior to this, the deadline was extended from June 30, 2019, to September 30, 2019, this extension itself was in followup of a longer 6-month extension that the ministry had afforded the concerned stakeholders when it extended the deadline from December 31, 2018.

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In August, the MNRE had issued the guidelines for the series approval of solar PV inverters for conducting testing in test labs for the implementation of Quality Control Solar Photovoltaics Systems, Devices and Component Goods Order 2017.

The guidelines are meant to facilitate test labs/manufacturers to approve the product family including change in design and materials for the solar inverters for their compulsory registration with BIS and for the implementation of the solar photovoltaics systems order. And were applicable for solar PV based off-grid, grid-tied and hybrid inverters of capacities up-to 150 kW.U

nder the guidelines, the manufacturers will have to submit a declaration about the series of their product while submitting the samples of a particular series for testing to test lab. Out of the entire range of models intended to be covered under registration, the highest-rated model shall be tested to cover the entire range of family.

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Ayush Verma

Ayush is a staff writer at and writes on renewable energy with a special focus on solar and wind. Prior to this, as an engineering graduate trying to find his niche in the energy journalism segment, he worked as a correspondent for