v3.25.2
Group information - Summary of Subsidiaries (Detail)
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
ReNew Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Private Limited  
Immediate holding company ReNew Energy Global Plc  
Country of incorporation India  
Proportion of ownership interest in subsidiary 94.00% 94.00%
ReNew Solar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Power Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green Energy Solutions Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green Energy Solutions Private Limited( previously known as ReNew Wind Energy (Jath Three) Private Limited)  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Fazilka Solar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Fazilka Solar Power Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Transmission Ventures Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Transmission Ventures Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Power International Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Power International Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation United Kingdom  
Proportion of ownership interest in subsidiary 100.00% 100.00%
RMG Acquisition Corp II    
Disclosure of subsidiaries [line items]    
Name of companies RMG Acquisition Corp II  
Immediate holding company ReNew Energy Global Plc  
Country of incorporation Cayman Islands  
Proportion of ownership interest in subsidiary 100.00% 100.00%
India Clean Energy Holdings    
Disclosure of subsidiaries [line items]    
Name of companies India Clean Energy Holdings  
Immediate holding company ReNew Energy Global Plc  
Country of incorporation Mauritius  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Diamond II Limited    
Disclosure of subsidiaries [line items]    
Name of companies Diamond II Limited  
Immediate holding company ReNew Energy Global Plc  
Country of incorporation Mauritius  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Jath) Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Jath) Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Karnataka) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Karnataka) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 70.00% 71.00%
ReNew Wind Energy (AP) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (AP) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 73.00% 66.00%
ReNew Solar Energy (Jharkhand Three) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Energy (Jharkhand Three) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 51.00% 51.00%
ReNew Solar Energy (Telangana) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Energy (Telangana) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Surya Alok Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Alok Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Sunlight Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Sunlight Energy Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 63.00% 63.00%
ReNew Surya Uday Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Uday Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 74.00% 74.00%
ReNew Energy Markets Private Limited (Formerly known as ReNew Vayu Power Private Limited)    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Energy Markets Private Limited (Formerly known as ReNew Vayu Power Private Limited)  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
RENEW Photovoltaics Private limited(Formerly known as ReNew Saksham Urja Private Limited)    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Photovoltaics Private Limited (Formerly known as ReNew Saksham Urja Private Limited)%  
Immediate holding company ReNew Shakti Four Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew E-Fuels Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew E-Fuels Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Jal Urja Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Jal Urja Private Limited  
Immediate holding company ReNew Power Services Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Welturi) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Welturi) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Devgarh) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Devgarh) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Rajkot) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Rajkot) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy Delhi Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy Delhi Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Shivpur) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Shivpur) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Jadeswar) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Jadeswar) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Varekarwadi) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Varekarwadi) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (MP) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (MP) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (AP 3) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (AP 3) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (MP Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (MP Two) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Rajasthan One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Rajasthan One) PrivateLimited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Jamb) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Jamb) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Orissa) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Orissa) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (TN) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (TN) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (AP2) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (AP2) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Karnataka Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Karnataka Two) PrivateLimited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Vaspet 5) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Vaspet 5) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (AP Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (AP 4) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (MP One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (MP One) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Karnataka Five) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Karnataka Five) PrivateLimited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Narmada Wind Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Narmada Wind Energy Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Abaha Wind Energy Developers Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Abaha Wind Energy Developers Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Helios Infratech Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Helios Infratech Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Shruti Power Projects Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Shruti Power Projects Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Kanak Renewables Limited    
Disclosure of subsidiaries [line items]    
Name of companies Kanak ReNewables Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Raj Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Raj Wind Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Madhya Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Madhya Wind Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Anantapur Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Anantapur Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Bidwal Renewable Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Bidwal Renewable Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Zemira Renewable Energy Limited    
Disclosure of subsidiaries [line items]    
Name of companies Zemira ReNewable Energy Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew Vyan Shakti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Vyan Shakti Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Pawan Urja Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Pawan Urja Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Pawan Shakti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Pawan Shakti Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew Naveen Urja Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Naveen Urja Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew Samir Urja Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Samir Urja Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Samir Shakti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Samir Shakti Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Energy (Rajasthan) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Energy (Rajasthan) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Energy (TN) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Energy (TN) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Energy (Karnataka) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Energy (Karnataka) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Saur Urja Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Saur Urja Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Clean Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Clean Energy Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Services Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Services Private Limited^  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Agni Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Agni Power Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Saur Shakti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Saur Shakti Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Energy (Jharkhand One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Energy (Jharkhand One) PrivateLimited^  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Energy (Jharkhand Five) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Energy (Jharkhand Five) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Energy (Karnataka Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Energy (Karnataka Two) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Karnataka 3) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Karnataka 3) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (MP Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (MP Four) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Maharashtra) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Maharashtra) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Karnataka 4) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Karnataka 4) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Bhumi Prakash Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Bhumi Prakash Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Tarun Kiran Bhoomi Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Tarun Kiran Bhoomi Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (AP Five) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (AP Five) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Symphony Vyapaar Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Symphony Vyapaar Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Lexicon Vanijya Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Lexicon Vanijya Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Star Solar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Star Solar Power Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Sungold Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Sungold Energy Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Budh 3) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Budh 3) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (TN 2) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (TN 2) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Akhilagya Solar Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Akhilagya Solar Energy Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Zorya Solar Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Zorya Solar Energy Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Auxo Solar Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Auxo Solar Energy Private Limited  
Immediate holding company ReNew Wind Energy (TN)Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew Sun Waves Private Limited (refer Note 36)    
Disclosure of subsidiaries [line items]    
Name of companies Renew Sun Waves Private Limited (refer Note 36)  
Immediate holding company ReNew Solar Energy (Jharkhand Four) Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary   100.00%
Auxo Sunlight Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Auxo Sunlight Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Sun Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Sun Energy Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Sun Bright Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Sun Bright Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
RenServ Global Private Limited$    
Disclosure of subsidiaries [line items]    
Name of companies RenServ Global Private Limited$  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Sun Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Sun Power Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Greenyana Sunstream Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Greenyana Sunstream Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 74.00% 74.00%
Renew Vyoman Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Vyoman Energy Private limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew Vyoman Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Vyoman Power Private Limited  
Immediate holding company ReNew Vikram Shakti Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew Surya Roshni Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Surya Roshni Private limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Surya Aayan Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Aayan Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Vidhi Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Vidhi Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Stellar Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Stellar Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Piyush Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Piyush Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Surya Tejas Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Tejas Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Sun Renewables Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Sun Renewables Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Sun Shakti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Sun Shakti Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Ravi Tejas Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Ravi Tejas Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Surya Ravi Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Ravi Private Limited  
Immediate holding company ReNew Solar Energy (Jharkhand Four) Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Dinkar Jyoti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Dinkar Jyoti Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Dinkar Urja Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Dinkar Urja Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Bhanu Shakti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Bhanu Shakti Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Ushma Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Ushma Energy Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Surya Spark Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Spark Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 74.00% 74.00%
ReNew Hans Urja Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Hans Urja Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti One) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Two) Private Limited  
Immediate holding company ReNew Vikram Shakti Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Three) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Three) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Four) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Five) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Five) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Six) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Six) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Seven) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Seven) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Eight) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Eight) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (MHH One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MHH One) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 100.00%
ReNew Green (MHP One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MHP One) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (TNJ One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (TNJ One) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (GJS One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJS One) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Green (GJS Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJS Two) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Green (MHK Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MHK Two) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 100.00%
ReNew Sandur Green Energy Private Limited (formerly known as 'ReNew Green (KAK One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Sandur Green Energy Private Limited (formerly known as 'ReNew Green (KAK One) Private Limited')  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 51.00% 51.00%
ReNew Green (GJS Three) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJS Three) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 74.00% 74.00%
ReNew Green (GJ five) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ five) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Green (GJ Six) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Six) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Green (GJ seven) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ seven) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Green (MHK One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MHK One) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (MHP Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MHP Two) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 74.00%
ReNew Green (TNJ Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (TNJ Two) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (MPR Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MPR Two) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 55.00% 55.00%
ReNew Green (KAK Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (KAK Two) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 74.00% 74.00%
ReNew Green (KAK Three) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (KAK Three) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (MHS One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MHS One) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 74.00% 74.00%
ReNew Green (GJ Ten) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Ten) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Green (GJ Eleven) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Eleven) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (GJ Twelve) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Twelve) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (GJ Thirteen) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Thirteen) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (KAK Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (KAK Four) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (MPR Three) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MPR Three) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Green (MPR Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MPR Four) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (TN Three) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (TN Three) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (TN Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (TN Four) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (CGS Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (CGS Two) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Nizamabad Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Nizamabad Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Warangal Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Warangal Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Narwana Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Narwana Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Sunworld Solar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Sunworld Solar Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Neemuch Solar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Neemuch Solar Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Purvanchal Solar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Purvanchal Solar Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Rewanchal Solar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Rewanchal Solar Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Medak Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Medak Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Ranga Reddy Solar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Ranga Reddy Solar Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Karimnagar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Karimnagar Power Private Limited  
Immediate holding company ReNew Fazilka Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar Photovoltaic Private Limited (formerly known as 'ACME Photovoltaic Solar Private Limited')    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Photovoltaic Private Limited (formerly known as 'ACME Photovoltaic Solar Private Limited')  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 49.00% 49.00%
Renew Green Shakti Private Limited (formerly known as 'ACME Green Shakti Private Limited')    
Disclosure of subsidiaries [line items]    
Name of companies Renew Green Shakti Private Limited (formerly known as 'ACME Green Shakti Private Limited')  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew Vikram Shakti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Vikram Shakti Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Tapas Urja Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Tapas Urja Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (GJ Nine) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Nine) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Green (CGS One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (CGS One) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (MPR One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MPR One) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Vidyut Tej Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Vidyut Tej Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Vidyut Shakti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Vidyut Shakti Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Power Synergy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Power Synergy Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Koppal- Narendra Transmission Limited    
Disclosure of subsidiaries [line items]    
Name of companies Koppal- Narendra Transmission Limited  
Immediate holding company ReNew Transmission Ventures Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 51.00% 51.00%
ReNew Solar (Shakti Nine) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Nine) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Ten) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Ten) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Eleven) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Eleven) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Twelve) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Twelve) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Solar (Shakti Thirteen) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar (Shakti Thirteen) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
IB Vogt Solar Seven Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies IB Vogt Solar Seven Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 49.00% 49.00%
Corneight Parks Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Corneight Parks Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Climate Connect Digital Limited (refer Note 36)    
Disclosure of subsidiaries [line items]    
Name of companies Climate Connect Digital Limited (refer Note 36)  
Immediate holding company Regent Climate Connect Knowledge Solutions Private Limited  
Country of incorporation United Kingdom  
Proportion of ownership interest in subsidiary   100.00%
India ReNew Energy Limited    
Disclosure of subsidiaries [line items]    
Name of companies India ReNew Energy Limited  
Immediate holding company ReNew Energy Global Plc  
Country of incorporation Mauritius  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (GJ Fourteen) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Fourteen) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (GJ Fifteen) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Fifteen) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (MHS Two) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MHS Two) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (MHS Three) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MHS Three) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (UP One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (UP One) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (HPR One) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (HPR One) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (KAK Five) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (KAK Five) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (MHP Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (MHP Four) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Gadag II-A Transmission Limited    
Disclosure of subsidiaries [line items]    
Name of companies Gadag II-A Transmission Limited*  
Immediate holding company ReNew Transmission Ventures Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 51.00% 100.00%
ReNew Power Services Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Power Services Private Limited$  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Energy Private Limited  
Immediate holding company ReNew Power Services Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Renewables Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro ReNewables Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Urja Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Urja Wind Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Mahawind Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Mahawind Power Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (MP Three) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (MP Three) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew Surya Vihaan Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Surya Vihaan Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Tej Shakti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Tej Shakti Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Urja Shachar Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Urja Shachar Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green (GJ Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Four) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Green (GJ Eight) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green (GJ Eight) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
Gadag Transmission Limited    
Disclosure of subsidiaries [line items]    
Name of companies Gadag Transmission Limited*  
Immediate holding company ReNew Transmission Ventures Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 51.00% 51.00%
ReNew Green (MHP Three) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Green (MHP Three) Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Aalok Solarfarms Limited    
Disclosure of subsidiaries [line items]    
Name of companies Aalok Solarfarms Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Abha Solarfarms Limited    
Disclosure of subsidiaries [line items]    
Name of companies Abha Solarfarms Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Shreyas Solarfarms Limited    
Disclosure of subsidiaries [line items]    
Name of companies Shreyas Solarfarms Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Heramba Renewables Limited    
Disclosure of subsidiaries [line items]    
Name of companies Heramba Renewables Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Rajasthan) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Rajasthan) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Prathamesh Solarfarms Limited    
Disclosure of subsidiaries [line items]    
Name of companies Prathamesh Solarfarms Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
AVP Powerinfra Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies AVP Powerinfra Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Badoni Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Badoni Power Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Vayu Urja Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Vayu Urja Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Rajasthan Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Rajasthan Four) Private Limited  
Immediate holding company ReNew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Pugalur Renewable Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Pugalur Renewable Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Rajasthan 2) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Rajasthan 2) Private Limited^  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Sipla) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Sipla) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Molagavalli Renewable Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Molagavalli Renewable Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Regent Climate Connect Knowledge Solutions Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Regent Climate Connect Knowledge Solutions Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Surya Jyoti Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Jyoti Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Surya Pratap Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Pratap Private Limited  
Immediate holding company ReNew Surya Vihaan Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Vayu Energy Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Vayu Energy Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Rann Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Rann Wind Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Bhesada Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Bhesada Wind Private Limited^  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Dhar Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Dhar Wind Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Alpha Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Alpha Wind Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 74.00% 73.00%
Ostro AP Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro AP Wind Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Andhra Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Andhra Wind Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Kannada Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Kannada Power Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Dakshin Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Dakshin Power Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Jaisalmer Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Jaisalmer Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Ostro Kutch Wind Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Ostro Kutch Wind Private Limited  
Immediate holding company Ostro Energy Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Akshay Urja Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew Akshay Urja Limited  
Immediate holding company Renew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Surya Ojas Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Ojas Private Limited  
Immediate holding company Renew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 51.00% 51.00%
ReNew Solar Energy (Jharkhand Four) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Solar Energy (Jharkhand Four) Private limited  
Immediate holding company Renew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Rajat Renewables Limited    
Disclosure of subsidiaries [line items]    
Name of companies Rajat ReNewables Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Wind Energy (Rajasthan 3) Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Wind Energy (Rajasthan 3) Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Surya Kiran Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Surya Kiran Private Limited  
Immediate holding company ReNew Green Energy Solutions Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 69.00% 69.00%
ReNew Mega Solar Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Mega Solar Power Private Limited  
Immediate holding company Renew Solar Power Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Green Projects Pte Ltd    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Green Projects Pte Ltd  
Immediate holding company ReNew Energy Global Plc  
Country of incorporation Singapore  
Proportion of ownership interest in subsidiary 100.00% 100.00%
ReNew Energy Global Americas Inc    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Energy Global Americas Inc  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew Hydro Power Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies ReNew Hydro Power Private Limited  
Immediate holding company ReNew Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00% 100.00%
Renew E-Fuels Greennh3 Private Limited    
Disclosure of subsidiaries [line items]    
Name of companies Renew E-Fuels Greennh3 Private Limited  
Immediate holding company ReNew E-Fuels Private Limited  
Country of incorporation India  
Proportion of ownership interest in subsidiary 100.00%  
Global Renserv Energy LLC    
Disclosure of subsidiaries [line items]    
Name of companies Global Renserv Energy LLC  
Immediate holding company RenServ Global Private Limited  
Country of incorporation United Arab Emirates  
Proportion of ownership interest in subsidiary 100.00%