The Ministry of New and Renewable Energy (MNRE) has published an updated list of wind turbine generator (WTG) models included in the Revised List of Models and Manufacturers (RLMM) as per the procedural framework declared on November 1, 2018. The updated RLMM reflects the latest additions based on submissions made by turbine manufacturers along with relevant certification documents.
Among the notable inclusions, a wind turbine model capable of operating with a rated power output of up to 2.2 MW under Enhanced Performance Mode has been officially recognized. The model’s performance has been verified in accordance with a valid Type Certificate, although it is essential to note that the enhanced performance output (2250 kW) is not considered for RLMM inclusion and applies within specific site limitations — maximum altitude of 1000 meters above sea level.
Key Highlights from the RLMM Update:
Certification Validity
The validity of several WTG models in the list is explicitly tied to the expiry dates of their respective Component Certificates, ensuring time-bound conformity with technical standards. For instance:
Some models’ certificates are valid until 26.03.2025, 04.02.2026, 15.10.2026, and 16.02.2026, depending on component-specific validations.
Site Limitations
The maximum allowable geographical altitude for erection is typically capped at 2000 meters above sea level for most models unless specified otherwise.
Power Curve and Component Restrictions
The SG 3.6-145 WTG model has been included in the RLMM based on the power curve of the SG 3.4-145 model. This inclusion is conditional upon the exclusive use of SGRE CR33-6P type generators.
Blade Specifications and Manufacturer Constraints
Wind turbine models are listed only with specific blade types, such as the ‘EN 76.5 A V2’. Alternate blade types like ‘LM76.5 P’ are not covered under the current RLMM.
Additionally, models incorporating blades manufactured by M/s Ria Blades S.A are restricted to 10 specific sets (Sl. Nos. RB002 to RB031) only.
Exclusions
The Hub and Nacelle Assembly facility at Pondicherry is not included under this RLMM listing.
Important Note for Stakeholders
The MNRE clarifies that this RLMM list is based solely on the documents and information submitted by manufacturers. It does not constitute certification or recommendation of the turbines’ usability or performance.
Entities including State Electricity Boards, TRANSCOs, Nodal Agencies, and Developers are strongly advised to:
- Verify full type approval
- Confirm valid ISO certifications
- Review all technical specifications and power curves
- Assess legal and operational implications prior to procurement or installation
MNRE assumes no liability for technical, commercial, or legal consequences arising from reliance on the RLMM. The responsibility for due diligence lies solely with the user.
