- Subsidiaries
- Joint Ventures
- Associates
Subsidiaries - ( India )
- Af-Taab Investment Company Limited
- Chirasthaayee Saurya Limited
- Clean Sustainable Solar Energy Private Limited (subsidiary of Walwhan Renewable Energy Limited)
- Coastal Gujarat Power Limited
- Dreisatz Mysolar24 Private Limited (subsidiary of Walwhan Renewable Energy Limited)
- Dugar Hydro Power Limited
- Industrial Energy Limited
- Maithon Power Limited
- MI Mysolar24 Private Limited (subsidiary of Walwhan Renewable Energy Limited)
- NDPL Infra Limited (subsidiary of Tata Power Delhi Distribution Limited)
- NELCO Limited
- NELCO Network Products Limited (subsidiary of NELCO Limited)
- Nivade Windfarm Limited (subsidiary of Tata Power Renewable Energy Limited)
- Northwest Energy Private Limited (subsidiary of Walwhan Renewable Energy Limited)
- Poolavadi Windfarm Limited (subsidiary of Tata Power Renewable Energy Limited)
- Powerlinks Transmission Limited
- Solarsys Renewable Energy Private Limited (subsidiary of Walwhan Renewable Energy Limited)
- Supa Windfarm Limited
- Tata Power Delhi Distribution Limited
- Tata Power Green Energy Limited
- Tata Power Jamshedpur Distribution Limited
- Tata Power Renewable Energy Limited
- Tata Power Solar Systems Limited
- Tata Power Trading Co. Limited
- Tatanet Services Limited (subsidiary of NELCO Limited)
- TCL Ceramics Limited
- TP Ajmer Distribution Limited
- TP Akkalkot Renewable Limited
- TP Central Odisha Distribution Limited
- TP Kirnali Limited (subsidiary of Tata Power Renewable Energy Limited)
- TP Kirnali Solar Limited
- TP Renewable Microgrid Limited
- TP Roofurja Renewable Limited
- TP Saurya Limited
- TP Solapur Limited (subsidiary of Tata Power Renewable Energy Limited)
- TP Solapur Solar Limited
- TP Wind Power Limited (subsidiary of Tata Power Renewable Energy Limited)(formerly known as Indo Rama Renewables Jath Limited)
- Vagarai Windfarm Limited (subsidiary of Tata Power Renewable Energy Limited)
- Walwhan Energy RJ Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Energy RJ Private Limited and Welspun Solar Rajasthan Private Limited)
- Walwhan Renewable Energy Limited (subsidiary of Tata Power Renewable Energy Limited)
- Walwhan Solar AP Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar AP Private Limited and Welspun Solar AP Private Limited)
- Walwhan Solar BH Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar BH Private Limited and Welspun Energy Jharkhand Private Limited)
- Walwhan Solar Energy GJ Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar Energy GJ Private Limited and Unity Power Private Limited)
- Walwhan Solar KA Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar KA Private Limited and Welspun Solar Kannada Private Limited)
- Walwhan Solar MH Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar MH Private Limited and Welspun Energy Maharashtra Private Limited)
- Walwhan Solar MP Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar MP Private Limited and Welspun Solar Madhya Pradesh Private Limited)
- Walwhan Solar PB Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar PB Private Limited and Welspun Solar Punjab Private Limited)
- Walwhan Solar Raj Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar Raj Private Limited and Viraj Renewables Energy Private Limited)
- Walwhan Solar RJ Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar RJ Private Limited and Welspun Solar UP Private Limited)
- Walwhan Solar TN Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Solar TN Private Limited and Welspun Solar Tech Private Limited)
- Walwhan Urja Anjar Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Urja Anjar Private Limited and Welspun Urja Gujarat Private Limited)
- Walwhan Urja India Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Welspun Urja India Limited)
- Walwhan Wind RJ Limited (subsidiary of Walwhan Renewable Energy Limited) (formerly known as Walwhan Wind RJ Private Limited and Welspun Energy Rajasthan Private Limited)
Subsidiaries - ( Foreign )
- Bhira Investments Limited
- Bhivpuri Investments Limited
- Far Eastern Natural Resources LLC
- Khopoli Investments Limited
- PT Sumber Energi Andalan Tbk
- Tata Power International Pte. Limited
- Trust Energy Resources Pte. Limited
Joint Ventures :
- Adjaristsqali Georgia LLC
- Adjaristsqali Netherlands BV
- Candice Investments Pte. Limited
- Indocoal KPC Resources (Cayman) Limited
- Indocoal Resources (Cayman) Limited
- Itezhi Tezhi Power Corporation Limited
- Koromkheti Georgia LLC
- Koromkheti Netherlands BV
- LTH Milcom Pvt. Limited
- Mandakini Coal Company Limited
- Prayagraj Power Generation Company Limited
- PT Antang Gunung Meratus
- PT Arutmin Indonesia
- PT Baramulti Sukessarana Tbk
- PT Citra Kusuma Perdana
- PT Citra Prima Buana
- PT Dwikarya Prima Abadi
- PT Guruh Agung
- PT Indocoal Kalsel Resources
- PT Indocoal Kaltim Resources
- PT Kalimantan Prima Power
- PT Kaltim Prima Coal
- PT Marvel Capital Indonesia
- PT Mitratama Perkasa
- PT Mitratama Usaha
- PT Nusa Tambang Pratama
- Renascent Power Ventures Private Limited
- Resurgent Power Ventures Pte. Limited
- Solace Land Holding Limited
- Tubed Coal Mines Limited
Associates
- Brihat Trading Private Limited
- Dagachhu Hydro Power Corporation Limited
- Tata Projects Limited
- The Associated Building Company Limited
- Yashmun Engineers Limited