(a) the details of installed power transmission capacity in the country,
State-wise;
(b) whether additional power transmission capacity is required to transmit
the surplus power to deficit regions and to enable electricity trading;
(c) if so, the details thereof; and
(d) the current status of the proposal to establish an Integrated National
Power Grid for facilitating inter-regional power transfer in the country?
THE MINISTER OF STATE IN THE MINISTRY OF POWER
( SHRI K.C. VENUGOPAL )
(a) : The transmission system in the country consists of inter-state
transmission system and intra-state transmission system. The inter-state
transmission system is installed mainly under Central Sector. Some of the inter-
state transmission has also been installed through private sector/joint venture
(JV). The intra-state transmission system is developed under State Sector by
the State Transmission Utility (STU) of each state. The details of transmission
capacity under Central / State Sector for transmission lines and sub-stations,
as on 31.07.2011, are given in Tables A-I and A-II respectively.
Table A-I: Capacity of Transmission Lines (All fig. in ckm)
Voltage level Central Sector State Sector JV / Private Sector Total(All India) ±500 kV HVDC 5948 1504 1980 9432 765 kV 4638 409 0 5047 400 kV 72489 31649 6117 110255 220 kV 10485 125619 425 136529 Total 93560 159181 8522 261263
Table A-II: Capacity of Substations (All fig. in MVA / MW)
Voltage level Central Sector State Sector JV / Private Sector Total(All India) ±500 kV HVDC 9500 1700 0 11200 765 kV 4500 0 0 4500 400 kV 67840 66522 630 134992 220 kV 5856 202705 1440 210001 Total 87696 270927 2070 360693