Central Electricity Regulatory Commission(R-1)
Rajasthan Rajya Vidyut Prasaran Nigam Limited (R-2)
Ajmer Vidyut Vitran Nigam Limited (R-3)
Jaipur Vidyut Vitran Nigam Limited (R-4)
Jodhpur Vidyut Vitran Nigam Limited (R-5)
Himachal Pradesh State Electricity Board (R-6)
Punjab State Electricity Board (Now Known as PSPCL) (R-7)
Haryana Power Purchase Centre (R-8)
Power Development Department
Government of Jammu and Kashmir (R-9)
Uttar Pradesh Power Corporation Limited (Formerly Uttar Pradesh State Electricity Board) (R-10)
Delhi Transco Limited (R-11)
BSES Yamuna Power Ltd (R-12)
BSES Rajdhani Power Ltd. (R-13)
North Delhi Power Ltd (R-14)
Chandigarh Administration (R-15)
Uttarakhand Power Corporation Ltd (R-16)
North Central Railway (R-17)
New Delhi Municipal Corporation (R-18)
Parbati Koldam Transmission Company Ltd. (R-19)
National Hydroelectric Power Corporation Ltd. (R-20)