Suzlon Group is to supply 25 turbines to Oil India for two wind farms in Madhya Pradesh and Gujarat totalling 52.5MW.
The order is for 12 S97 120-metre high units and 13 S111 90-metre machines.
The projects are scheduled to be complete by June 2017.
The deal is Suzlon’s first with Oil India.
Suzlon Group chief executive JP Chalasani said: “We welcome Oil India in our customer profile and would be delighted to forge a solid partnership with our maiden venture with them.”