Date: 2025-12-01Category: Not ApplicableState: Union GovernmentCountry: India
Amendment to ‘Standard Operating Procedure (SOP) for Approved List of Models and Manufacturers – Wind (ALMM-Wind) and Approved List of Models and Manufacturers – Wind Turbine Components (ALMM-WTC)’
This office memorandum, dated December 1st, 2025, from the Ministry of New and Renewable Energy, Wind Energy Division, concerns an amendment to the Standard Operating Procedure (SOP) for the Approved List of Models and Manufacturers - Wind (ALMM-Wind) and Approved List of Models and Manufacturers - Wind Turbine Components (ALMM-WTC). Specifically, Clause 8.1, titled 'Performance Efficiency and Safety Issues' of the SOP issued on October 29th 2025, is amended.
The committee will deliberate on the turbine's performance and ensure the power curve is tested and certified by an accredited laboratory in accordance with IEC 61400-12-1. All supporting performance data must align with regulatory expectations, including performance in representative geographical conditions. The amendment encourages manufacturers to conduct prototype testing in India. Mandatory prototype testing in India will be required after two years from the date of issuance of this amendment, subject to a review. Other clauses of the SOP remain unchanged.
The memorandum is issued with the approval of the competent authority and is addressed to all concerned. Copies are sent to: Sr. PPS to Secretary, MNRE; PPS to Joint Secretary (Wind), MNRE; and PA to Director (PKD), MNRE. The contact person is Rishikesh Vaishnav, Scientist 'C'.
Key Entities Referenced
Ministry of New and Renewable Energy: The ministry issuing the amendment.
Standard Operating Procedure (SOP) for Approved List of Models and Manufacturers - Wind (ALMM-Wind) and Approved List of Models and Manufacturers - Wind Turbine Components (ALMM-WTC): The SOP being amended regarding wind turbine components.
IEC 61400-12-1: Referenced standard for testing and certification of wind turbine performance.
India: Location where prototype testing is required.
No. 233/1/2018-Wind
Government of India
Minist11 of New and Rcncwahle Energy
1
Wind Energy Division
Atal Akshaya Urja Hhawan, Lodi Road, New Delhi-110003
Dated: OP' December, 2025
OFFICE MEMORANDUM
Subject: Amendment to 'Standard Operating Procedure (SOP) for Approved List of
Models and Manufacturers - Wind (ALMM-Wind) and Approved List of Models and
Manufacturers -Wind Turbine Components (ALMM-WTC)' -reg.
The undersigned is directed to refer Standard Operating Procedure (SOP) for Approved
List of Models and Manufacturers - Wind (ALMM-Wind) and Approved List of Models and
Manufacturers -Wind Turbine Components (ALMM-WTC) issued by this Ministry OM dated
29.10.2025. In this regard, Clause 8.1 para titled 'Performance Efficiency and Safety Issues'
of the above cited SOP is amended as below;
Existing Clause Amended Clause
The committee will deliberate on the turbine's
performance, ensuring the power curve has been
The committee will deliberate on the tested and certified by an accredited laboratory in
turbine ·s performance, ensuring the accordance with IEC 61400-12-1 and that all
power curve has been tested and certified supporting performance data aligns with regulatory
by an accredited laboratory m expectations including ·perfonnance m
accordance with IEC 61400-12-1 and representative geographical. -~:. c,onditions.
that all supporting perfonnance data Manufacturers accordingly are ericouraged to
aligns with regulatory expectations carry out the prototype testing in India.
including performance in representative
geographical conditions. Mandatory The requirement of prototype testing in India
prototype testing within India. will be mandatory after two years from the date
of issuance of this amendment subject to a
review.
2. The other clauses of the SOP are unchanged.
.., This issues with the approval of competent authority .
J.
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(Rishikesh Vaishnav)
Scientist 'C'
To
All concerned
Copy to:
i) Sr. PPS to Secretary, MNRE
ii) PPS to Joint Secretary (Wind), MNRE
iii) PA to Director (PKO), MNRE