Powergrid Corporation of India ltd.(R-1)
Transmission Corporation of Andhra Pradesh Limited (R-2)
Kerala State Electricity Board (KSEB)
(R-3)
Tamil Nadu Generation and Distribution Corporation Limited (R-4)
Electricity Department Government of Pondicherry (R-5)
Eastern Power Distribution Company of Andhra Pradesh Limited (R-6)
Southern Power Distribution Company of Andhra Pradesh Limited (R-7)
Central Power Distribution Company of Andhra Pradesh Limited (R-8)
Northern Power Distribution Company of Andhra Pradesh Limited (R-9)
Bangalore Electricity Supply Company Limited (R-10)
Gulbarga Electricity Supply Company Limited (R-11)
Hubli Electricity Supply Company Limited (R-12)
Mangalore Electricity Supply Company Limited (R-13)
Chamundeshwari Electricity Supply Corporation Limited (R-14)
Electricity Department Government of Goa (R-15)
Transmission Corporation of Telangana Limited (R-16)
Tamil Nadu Transmission Corporation (R-17)
Central Electricity Regulatory Commission (R-18)