Deadline for BIS Certification of Inverters Gets 3 Month Extension Updated On Thu, Oct 24th, 2019 by Saurenergy 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 […] Read more