BIS Scheme X CERTIFICATION FOR DIESEL GENERATOR

Diesel Generators are used in commercial establishments, industries, hospitals, infrastructure projects, residential projects and in many more places as a secondary source of power. As economic assets with the responsibility of guaranteeing the continuity of electric supply, it is important for the machines to be safe, efficient and meeting national standards.
In an effort to do so, the BIS Certification of the Diesel Generator is included in the Scheme X Certification of the Bureau of Indian Standards (BIS). This scheme has been put in place to make sure that both national and global manufacturers meet the tough and strict Indian Standards before they sell their products in India.
This post details the significance of the BIS Scheme X Certification of Diesel Generators, the OTR mandate of 2024 and how manufacturers can avail certification.
Importance of BIS for Diesel Generators
Diesel generators are used in:
- Factories and work sites
- Hospitals and emergency responders
- Data centers and IT hubs
- Commercial and residential buildings
- Public Works and Utilities
The risks are huge if the diesel gensets not properly certified:
- Meter failures (mechanical and electrical) resulting in lack of supply
- High risk of fire and safety hazards in non-compliant units
- Emissions too high and energy inefficient
- Legal barriers, lock out from tenders
The Diesel Generators can easily meet the Scheme X certification which allows the manufacturers to sell products that are safe, reliable and eco-friendly for use in India.
What is BIS Scheme X Certification of Diesel Generators?
BIS Scheme X Certification for Diesel Generators is an official certification process and is a system established by the BIS Conformity Assessment Regulations 2018. It mandates rigorous testing and quality assessment to validate adherence to Indian Standards.
Highlights of the Scheme X Certification:
- All manufacturers - Indian as well as foreign - Mandatory requirement
- Applicable for all types of diesel generators with different capacity
- Inclusive of product testing in BIS authorised labs
- Factory Audit, Workshop Visiting and Production Process Checking, to independently conduct on-site factory inspection to ensure quality and safety standards.
- Offers the licence to use the BIS Standard Mark when licensed
BIS OTR for Diesel Generators (DGs)
The Ministry of Heavy Industries has issued a notification for the OTR for Diesel Generators in 2024.
Date of Enforcement: All producers and importers shall get certification till 1st September 2026. From this date, production, sale, or import of uncertified diesel gen sets will be prohibited in India.
Advantages of BIS Certification for Diesel Generators
- Safety Assurance: Minimizes mechanical failure, based on fire prevention technology to prevent fire, short circuit, and accidents.
- Environmental Compliance: Ensures energy-saving and emission-reducing standards are followed.
- Market Access: OTR for Diesel Generators - Certification is mandatory for sale in India
- Customer Trust: The BIS Standard Mark ensures high reliability and safety.
- Tender Eligibility: For Government / PSU contracts, products have to be certified.
Types of Diesel Generators Covered under Scheme X
The Diesel Generators Certification scheme X includes the following groups:
- Mobile home generators using diesel
- Commercial diesel genset (high capacity)
- Emergency and standby power supply generators
- Noiseless Diesel Generator Sets for Commercial (Application and Urban Use)
Each sub type shall conform to the applicable Indian Standards (IS codes) such as IS 16819:2018 / ISO 12100:2010 (Safety of Machinery General Principles of Design - Risk Assessment & Risk Reduction). Each type shall meet its own Indian Standards.
Procedure for BIS Certification of Diesel Generators
- Identify Applicable Standards: Find out the IS codes for the type of generator.
- Product Testing: Carry out safety, performance and emission tests at BIS recognised laboratories.
- Factory Audit: BIS officers examine the process of controlling quality of manufacturing.
- Documentation Submission: Make available specifications, test results, and compliance documentation.
- Grant of License: When approved, BIS issues a license and permits the use of the Standard Mark.
- Ongoing Compliance: Audits and product inspections are conducted to ensure the certification remains valid.
Penalties for Non-Compliance
Failure to adhere to the BIS Certification for Diesel Generators of the OTR for Diesel Generators may result in:
- Prohibiting the sale, import and manufacture of Non-certified Equipment.
- Goods being seized and financial penalties
- Ineligibility for government contracts
- Permanent reputational and financial damages
Conclusion
The BIS Scheme X Certification for Diesel Generators as per OTR for Diesel Generators (2024) is an important milestone in the journey for enhancement of product safety, reliability and efficiency in the Indian power-backup industry.
For the manufacturers/importers, the Scheme X certification for Diesel Generators is not just a legal necessity, it is a competitive edge that reflects credibility, adherence and market confidence.
Dhruv Aggarwal
Head of Operations at Sun Certifications India
Experience: 10+ years & Handled 1000+ projects
Awarded by many Indian and International organisations

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