The Tamil Nadu government has announced an amended Repowering Policy for wind mills in the State.
For the wind energy generators commissioned before April 1, 2016, its owners should mandatorily opt for repowering or refurbishment or life extension on completion of 20 years of operational life.
In respect of wind energy generators commissioned on or after April 1, 2016, the requirement of undertaking repowering may be applied after the completion of 25 years of operational life.
After the life period of 20 years and those with average generation for the last three financial years not less than 70 % of the rated generation certified by independent agency like NIWE are eligible for life extension.