Central Electricity Regulatory Commission(R-1)
Power Gird Corporation of India Limited (R-2)
Transmission Corporation of Andhra Pradesh Ltd. (R-3)
Kerala State Electricity Board. (R-4)
Tamil Nadu Electricity Board. (R-5)
Electricity Department
Government of Goa
(R-6)
Electricity Department
Government of Pondicherry (R-7)
Eastern Power Distribution Company of Andhra Pradesh Limited (R-8)
Southern Power Distribution Company of Andhra Pradesh Ltd. (R-9)
Southern Power Distribution Company of Telangana Limited (R-10)
Northern Power Distribution Company of Telangana Limited (R-11)
Bangalore Electricity Supply Co. Ltd (R-12)
Gulbarga Electricity Supply Co. Ltd. (R-13)
Hubli Electricity Supply Co. Ltd. (R-14)
Mescom Corporate Office (R-15)
Chamundeshwari Electricity Supply Co. Ltd (R-16)
Transmission Corporation of Telengana Limited (R-17)
Karnataka Power Transmission Corporation Ltd. (R-18)
Tamil Nadu Transmission Corporation (R-19)
Madhya Pradesh Power Management Company Limited (R-20)
Maharashtra State Electricity Distribution Company Ltd. (R-21)
Gujarat Urja Vikas Nigam Limited (R-22)
Union Territory of Dadra and Nagar Haveli and Daman and Diu (R-23)
Chhasttisgarh State Electricity Board (R-24)
Madhya Pradesh Audyogik Kendra Vikas Nigam (Indore) Ltd. (R-25)