MNRE Issues Revised Guidelines for Installation of Prototype Wind Turbine Models
The Ministry of New and Renewable Energy (MNRE) has issued revised guidelines to streamline the installation and type testing of prototype wind turbine models for grid synchronisation in India.
June 13, 2025. By Mrinmoy Dey
The guidelines mandate that prototype installations will only be permitted for the purpose of type testing to obtain type certification from internationally accredited certifying agencies. MNRE has recommended that land for these installations be allocated on a ‘footprint basis’ to optimise land use.
The prototype certificate for such models will be valid for a maximum of three years, during which the testing and certification must be completed in line with globally accepted standards such as IECRE OD 501 and IS/IEC 61400-22:2010.
Type testing must be conducted exclusively by internationally accredited bodies, and the prototype certificate must be submitted to the National Institute of Wind Energy (NIWE). “A maximum period of 3 years from the date of issuance of recommendation letter from NIWE for the prototype wind turbines will be allowed to complete testing and for obtaining the type certificate,” stated the notification from MNRE.
As per the provisions of the guideline, prototype wind turbines must be commissioned and grid-synchronised within 18 months of NIWE's recommendation letter.
“Regular maintenance and service shall be carried out for the prototype wind turbines installed. The type certification body will provide a letter at the end of the year regarding regular operation and maintenance of prototype wind turbines. Failing which the wind turbines are liable to be disconnected from the grid,” stated the notification.
It further added that all prototype turbines must be commissioned within three years and cannot be sold or transferred until the model is included in the Revised List of Models and Manufacturers (RLMM). “For each prototype wind turbine model, a maximum of 3 wind turbines will be allowed for grid synchronization/commissioning,” it said.
Only new and unused components may be used in the manufacturing of prototype turbines. “However, the changes/modification to the already installed prototype wind turbine will be allowed,” clarified the notification.
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