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BIS Certification for Solar Inverters- An Overview

A BIS certification for solar inverters entitles a manufacturer or importer to market their inverter as an IS 16221 product under the compulsory registration scheme.

With Corpbiz’s uninterrupted support, you can categorize your goods, submit your paperwork, apply for certification via online mode, and renew your registration before expiry. We are leading the industry with a 75% market share.

Confused about the process of BIS certification for solar inverters? Talk to our experts now.

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What are the Conditions for BIS Certification for Solar Inverters?

The key criteria for BIS certification for solar inverters include the following:

  • The inverter must meet requirements under the IS 16221.
  • The scope of the product- a grid connection or a standalone system.
  • The manufacturer must be registered with a business license.
  • The factory unit must be officially registered as an enterprise address.
  • The applicant should have an ISO certification.
  • Separate business license copies for each unit.
  • The application must be made through the online BIS portal.
  • A sample inverter should be tested via a recognized BIS lab.
  • The report must be submitted within 90 days of its issue date.
  • Plant inspection by the BIS officials to check the machinery.
  • An authorized Indian representative with a letter for foreign applicants.
  • Submission of affidavit and nomination letter (if required).
  • Construction data form and critical component list.
  • The applicant must submit tech documents to support the application.
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Documents Required for BIS Registration for Solar Inverters

What are the Documents Required for BIS Registration for Solar Inverters?

The list of documents required for BIS registration for solar inverters is as follows:

  • BIS application form
  • KYC and address proof of the applicant
  • Business registration of the manufacturer
  • Identification of the authorized representative
  • A copy of the factory license
  • ISO certificate of the manufacturer
  • Utility bills or the lease agreement of the factory unit
  • Details of the BIS label
  • CDF/CCL form
  • A BIS-recognized test report with a validity of 90 days
  • A flow chart diagram of the manufacturing process
  • List of all testing and manufacturing equipment
  • Complete layout of the factory
  • Tech and user manual of the inverter
  • A notarized letter of nomination or affidavit (for foreigners)
  • A copy of the company incorporation if the AIR is a corporation
  • Trademark registration certificate’s photocopy
  • An authorization letter from the brand owner (if applicable)
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How to Apply for BIS Certificate for Solar Inverters with Corpbiz?

Are you in the solar business in India? Find out how Corpbiz will assist you throughout the steps to apply for BIS certificate for solar inverters, as explained below:

  • Step 1: Prepare Documents Our associates will assist you in assembling all the mandatory documents, like ID proofs, licenses, the TM registration certificate, and technical documents.
  • Step 2: Appoint Representative (Optional) We’ll help you connect with an authorized Indian representative (AIR) if you’re a foreign manufacturer. The Identification and address proof are required of the authorized person.
  • Step 3: Send Sample for Testing It is mandatory to send an inverter sample for testing to a BIS-recognized lab to comply with the IS 16221 (part 2). We have a network of 100+ best BIS labs that will assist you in fulfilling this compliance requirement.
  • Step 4: Application Filing The test reports, along with the documents, should be submitted within 90 days of the issue date of the sample testing report. We’ll apply for the BIS certificate for solar inverters via the portal.
  • Step 5: Examination The officials will review your documents and technical specification sheets along with other paperwork to ensure compliance with the bureau’s standards.
  • Step 6: Modifications (if any) If the BIS sends a letter to obtain clarifications or a modification request, then we’ll make the necessary changes after obtaining explicit consent from you.
  • Step 7: Factory Inspection The authority will visit and inspect your manufacturing plant to check your process and equipment’s working conditions.
  • Step 8: Registration If all conditions are met, then you’ll receive the BIS certificate. You can now start labeling your products with the IS 16221, registration number, and batch details.
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Why Opt Corpbiz for Online BIS Registration for Solar Inverters?

Now start your Make in India dream come true with the help of Corpbiz services. Below are key reasons why you should be opting for us for online BIS registration for solar inverters:

  • 100% Simplified Documentation & Process
  • Chain of 100+ BIS-approved Labs
  • Compliance Management
  • 99% Success Rate, Best in the Industry
  • 30-Min Personalized Consultation
  • Dedicated Case Manager
  • Factory Audit Support
  • Product Testing Assistance
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FAQs on BIS Certification for Solar Inverters

The initial BIS certification for solar inverters is valid for two years, and you can start the renewal process 90 days in advance of the expiration. Noncompliance would lead to cancellation of the BIS. Late renewals will trigger an INR 5000 fine.

It’ll take almost 4 to 8 weeks if you’re an Indian manufacturer, whereas 16 to 36 weeks for non-resident/foreigners for the BIS permit.

No, you cannot manufacture or import solar inverters without first obtaining a permit from the Bureau of Indian Standards. Contact Corpbiz for more information to experience a stress-free BIS certification.

The list of compliance mandates after BIS certification for solar inverter includes the following:

  • Mandatory marking and labeling of the product with the BIS mark, CRS number, model number, and manufacturing batch.
  • Periodic testing of the equipment and inverters.
  • On-time renewal of the BIS license.
  • Cooperation with the officials during site inspections.
  • Market research to check new trends and consumer segments.

The fee structure (in INR for a two-year permit) for the Bureau of Indian Standards registration is as follows:

  • Application: 1,000
  • Test processing: 25,000 (one report)
  • Annual charge: 2,000

Yes, all foreigners and non-residents will have to take the services of an authorized Indian representative to complete their BIS application.

The permit is mandatory for manufacturing and importing inverters in business. The key advantages of BIS certification for solar inverters include the following:

  • Easy entry into the Indian market.
  • Customers approve of your product because it meets the safety and quality standards.
  • IS-marked products have the biggest customer segments.
  • You can create and establish a distinct brand identity.

The test report is valid for 90 days, and it must be submitted within the prescribed timeline to obtain the BIS certification for solar inverters.

About the Author


NE
Neha Dawra

Legal Researcher

Written by Neha Dawra. Last updated on Jun 16 2026, 11:33 AM

Neha Dawra has 4+ years of experience in legal research and intellectual property advisory. Her expertise lies in analyzing IP laws, drafting structured legal content, and simplifying complex registration procedures into clear, simple insights.

 

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