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Government Of Assam Power

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Electricity Transmission

Assam Electricity Grid Corporation Limited, is a vibrant growth oriented Public Sector Company registered under ‘Company Act, 1956’. It was formed out of restructured Assam State Electricity Board (ASEB) in 2003 and was notified as the State Transmission Utility (STU).

The functions of State Transmission Utility as per Sec. 39 of The Indian Electricity Act 2003 state as below-
(a) to undertake transmission of electricity through intra-State transmission system;
(b) to discharge all functions of planning and co-ordination relating to intra-State transmission system with -

  • Central Transmission Utility
  • State Governments
  • Generating companies
  • Regional Power Committees
  • Authority
  • Licensees
  • Any other person notified by the State Government in this behalf

(c) to ensure development of an efficient, co-ordinated and economical system of intra-State transmission lines for smooth flow of electricity from a generating station to the load centres;
(d) to provide non-discriminatory open access to its transmission system for use by-

  • any licensee or generating company on payment of the transmission charges ; or
  • any consumer as and when such open access is provided by the State Commission under sub-section (2) of section 42, on payment of the transmission charges and a surcharge thereon, as may be specified by the State Commission:

Section 40. of Indian Electricity Act 2003, states the Duties of transmission licensees as -
It shall be the duty of a transmission licensee -
(a) to build, maintain and operate an efficient, co-ordinated and economical inter-State transmission system or intra-State transmission system, as the case may be;
(b) to comply with the directions of the Regional Load Despatch Centre and the State Load Despatch Centre as the case may be;
(c) to provide non-discriminatory open access to its transmission system for use by-

  • any licensee or generating company on payment of the transmission charges; or
  • any consumer as and when such open access is provided by the State Commission under sub-section (2) of section 42, on payment of the transmission charges and a surcharge thereon, as may be specified by the State Commission:

Assam Electricity Grid Corporation Limited inherited 3862 circuit kms. of EHV transmission lines above 33 kV voltage class and 38 numbers of EHV sub-stations having a total transformation capacity of 1636.50 MVA at its birth in 2003.

Since its inception, it has added 1490.48 circuit kms of EHV lines and has added 3444.50 MVA transformation capacity by way of commissioning 20 new EHV sub-stations and augmenting existing sub-stations. It has also added Reactive Power Compensation at 33 kV bus to the tune of 195 MVAR. Assam Electricity Grid Corporation Limited had also added one 400/220/132 kV Grid Substation and One 220/33 kV GIS Sub Station during the preceding years.

Being the largest STU (State Transmission Utility) among the NER States, AEGCL has been playing a key role for its stake holder. Presently, AEGCL grid can handle 1620 MW of power and it has 5910 MVA of transformation capacity. AEGCL currently owns 4891 ckt. Km. of Transmission line.

Present Transmission availability of AEGCL is more than 98.5%.