A grid-connected solar inverter is an essential component of a solar power system. It converts the direct current (DC) generated by solar panels into alternating current (AC) that can be used by electrical appliances or supplied to the electricity grid. As India continues to expand its renewable energy infrastructure, product quality, electrical safety, and regulatory compliance have become increasingly important for solar equipment manufacturers and importers.

BIS Certification for Grid-Connected Solar Inverter is a topic that manufacturers, importers, and suppliers should carefully evaluate before entering the Indian market. However, it is important to understand that BIS certification requirements depend on the product category and the applicable Indian Standard or Quality Control Order (QCO). Not every grid-connected solar inverter should automatically be assumed to fall under the BIS Compulsory Registration Scheme (CRS).

What Is BIS Certification for Grid-Connected Solar Inverter?

The Bureau of Indian Standards (BIS) is India's national standards body responsible for developing standards and operating product conformity assessment schemes. BIS Certification for Grid-Connected Solar Inverter helps establish that a product meets the applicable Indian Standard and regulatory requirements.

For solar photovoltaic inverters, relevant standards include:

• IS 16221 (Part 2):2015: Safety requirements for power converters used in photovoltaic systems, specifically inverters.

• IS 16169:2019: Test procedures for islanding prevention measures in utility-interconnected photovoltaic inverters.

• IS 17980:2022: Maximum power point tracking (MPPT) efficiency of grid-connected photovoltaic inverters.

These standards address different technical aspects of inverter safety and performance. Their existence does not, by itself, mean that every inverter must obtain a BIS licence under the same certification scheme.

Is BIS CRS Registration Mandatory for Grid-Connected Solar Inverters?

BIS CRS Registration for Grid-Connected Solar Inverter depends on the applicable product category, capacity, Indian Standard, and relevant government notification. The Ministry of New and Renewable Energy has issued the Solar System, Devices and Components Goods Order, 2025, which includes requirements concerning solar photovoltaic inverters with a capacity of more than 200 kW. The applicable order and implementation provisions should be checked before determining the certification route.

Manufacturers and importers should not assume that the Compulsory Registration Scheme (CRS) applies to every grid-connected inverter, regardless of capacity. They should verify whether their specific model falls within the notified category and whether any exemptions, amendments, or implementation conditions apply.

This initial verification helps businesses avoid unnecessary applications, incorrect standard selection, and delays in product launches.

Documents Required for BIS Certification

The documents required will depend on the applicable scheme and the manufacturer's circumstances. Commonly required information may include:

• Business registration and manufacturing unit details

• Manufacturer's authorisation, where applicable

• Product specifications and technical datasheets

• Circuit diagrams, component lists, and product photographs

• Applicable Indian Standard and test reports

• Trademark or brand ownership documents

• Quality-control and manufacturing information

• Importer or authorised Indian representative details, where applicable

A complete document set helps ensure that the product details, manufacturer information, and proposed certification scope are consistent throughout the application process.

Process for BIS Certification for Grid-Connected Solar Inverter

The certification process should begin with a review of the product's technical specifications and the relevant regulatory requirements. The general steps are as follows:

1. Product and standard identification: Identify the inverter's capacity, intended application, model details, and applicable Indian Standards.

2. Document preparation: Compile technical documents, manufacturing details, and required compliance records.

3. Product testing: Arrange testing through the appropriate laboratory and confirm that the required test methods and standards are covered.

4. Application submission: Submit the application through the applicable BIS process, along with the required documents and fees.

5. Assessment and verification: Address any technical queries or deficiencies raised during the assessment.

6. Certification or registration: Complete the applicable compliance process and obtain the required approval before marketing the product where mandatory.

The exact procedure may differ according to the certification scheme and applicable QCO. BIS provides official guidance on standard identification, product testing, and certification applications.

Why Hire a BIS CRS Consultant for Grid-Connected Solar Inverter?

Working with a BIS CRS Consultant for Grid-Connected Solar Inverter can help manufacturers and importers understand the applicable requirements and organise their compliance activities. Solar inverter certification can involve technical documentation, laboratory coordination, product specifications, and interpretation of regulatory notifications.

A consultant may assist with identifying the applicable standards, reviewing documents, coordinating testing, preparing application information, and responding to technical queries. This support can reduce avoidable documentation errors and help businesses manage the certification process more efficiently.

However, a consultant cannot guarantee approval or replace the testing and assessment required by the relevant authority. The final decision rests with the competent authority under the applicable certification framework.

Benefits of Working with a BIS Consultant for Grid-Connected Solar Inverter

A professional BIS Consultant for Grid-Connected Solar Inverter can support businesses in several ways:

• Regulatory clarity: Understand which standards and notifications apply to the specific inverter model.

• Documentation support: Organise technical records and application documents.

• Testing coordination: Identify suitable laboratories and plan testing requirements.

• Application assistance: Help prepare submissions and respond to queries.

• Compliance planning: Track applicable deadlines and changes in regulatory requirements.

These services are particularly useful for businesses launching new products, importing solar equipment, or expanding their presence in India's renewable energy sector.

Latest Compliance Update for Solar Inverters

As of October 2026, MNRE's official notices indicate that implementation of the 2025 Solar Systems, Devices and Components Goods Order for solar photovoltaic inverters above 200 kW has been extended until 31 December 2026, or until further orders, whichever is earlier, under specified self-certification conditions. Manufacturers should review the latest notification and confirm that they satisfy the applicable conditions, including the required IEC certificates and accredited laboratory test reports.

This temporary arrangement should not be treated as a blanket exemption for every solar inverter or as a substitute for checking the product-specific requirements.

Conclusion

BIS compliance is an important consideration for manufacturers, importers, and suppliers of grid-connected solar inverters in India. Understanding the applicable standards, preparing accurate technical documents, and completing the relevant testing and approval process can help businesses avoid compliance-related delays.

Before applying for BIS Certification for Grid-Connected Solar Inverter, verify the product category, rated capacity, relevant Indian Standards, and current QCO provisions. Professional assistance can make this process more organised while helping businesses maintain regulatory compliance as India's solar energy market grows.