Milestones

 

Year

Milestone
2022
765KV, D/C, Dharamjaygarh Pool section B - Raigarh (Tamnar) Pool line (G-TTPL-TBCB) (137CKM) implemented by SGL, commissioned in Jun’22.
400KV, D/C, Jeerat (New) - Subhasgram (PM-JTL-TBCB) (214 CKM) implemented by PGCIL, commissioned in Aug’22.
All 13 REMs assigned to POWERGRID are now operational. 
2021
  • POWERGRID Infrastructure Investment Trust (PGInvIT): 1stInvIT sponsored by a CPSE and largest public offer by any InvIT/ REIT of ₹ 7,734.99 crore successfully launched by POWERGRID.
  • Bipole-I (3000 MW) of ±800 kV Raigarh - Pugalur HVDC transmission line commissioned.
  • First time in India, Voltage Source Convertor (VSC) Technology: Monopole 1 & 2 of ±320kV VSC based HVDC terminals and associated ± 320 kV HVDC Pugalur - North Thrissur transmission line.
  • Raigarh and Pugalur Station HVDC Terminal pole-II commissioned in Mar’21
  • 765 kV D/C Vindhyachal - Varanasi Inter-regional line commissioned in July’21
2020
  • 11 REMCs dedicated to the nation by Hon’ble MoSP (I/c) in Feb’20.
  • Transmission system associated with GEC-I completed by Mar’20.
  • Transmission system associated with Solar Ultra Mega Power Projects completed by June’20.
  • 765 kV D/C Chilkaluripeta – Cudappah line commissioned in Jan’20
  • 765 kV D/C Vemagiri – Chilakaluripeta line commissioned in Jan’20
  • Pole 4 of Champa and Kurukshetra HVDC Station commissioned in Mar’20
  • 800 kV HVDC Raigarh (HVDC stn) - Pugalur (HVDC stn) Bipole Link (3531 Ckm) has been commissioned in Sept’20
  • Raigarh and Pugalur Station HVDC Terminal (Pole-I) charged in Sept’20
2019
  • POWERGRID declared as Maharatna CPSU in Oct’19.
  • Srinagar-Leh Transmission System (SLTS) commissioned in Jan’19.
  • Pole 3 of Champa and Kurukshetra HVDC Station commissioned in Nov’19

2018
  • 765 Jabalpur-Orai- Aligarh D/C IR System commissioned in Mar’18
  • Guidelines for Import/Export (Cross Border) of Electricity issued in Dec'18

2017
  • 765 kV D/c Nizamabad-Hyderabad commissioned in July'17
  • + 800 kV Champa-Kurukshetra HVDC Bipole-I, commissioned in Sep.’17
  • + 800kV Alipurduar-Agra HVDC Bipole, commissioned in Sep’17  

2016

NER directly connected with NR. The longest 6000 MW HVDC line (±800 kV) from Bishwanath Chariali in NER to Agra in NR for dispersal of power from NER to NR/WR

2014

The Southern Grid synchronously connected with rest of all-India grid in December, 2014 through S/C 765 kV Raichur- Solapur line
2013 The Southern Grid synchronously connected with rest of all-India grid in December, 2014 through S/C 765 kV Raichur- Solapur line

2011

Implementation of Point-Of-Connection (PoC) based method for sharing transmission charges and losses all across the country.

2010

Notification of POSOCO – as a separate entity for operation of RLDCs and NLDC

2007
  • NR also synchronously interconnected with WR through Agra- Gwalior 765 kV S/C line-1 operated at 400 kV level (besides interconnection of NR-ER)
  • 765 kV operation of Sipat Substation
  • 765 kV operation of 765 kV transmission lines

2006

Synchronous inter-connection of NR with ER-NER-WR system led to the formation of NEW grid (with commissioning of Muzaffarpur-Gorakhpur 400 kV D/C line, the Northern Region also got interconnected to this system making an upper India system having the NR-WR-ER-NER system

2004

Open access in transmission

2003 
  • Electricity Act 2003 
  • ABT with real time settlement mechanism implemented in all the five electrical regions creating the basic infrastructure for the operation of an electricity market.
  • Western Region was interconnected to ER-NER system synchronously through 400 kV Rourkela-Raipur D/C line and thus the Central India system consisting of ER-NER-WR came in to operation Bulk inter-regional HVDC transmission system (Talcher– Kolar HVDC link- 2000 MW)

1999

Transmission planning re-oriented towards all-India System

2000

Introduction of 765 kV transmission line (initially charged at 400 kV)

1990

Introduction of HVDC bi-pole line

1992

The Eastern Region and the North-Eastern Region were synchronously interconnected through the Birpara- Salakati 220 kV D/C transmission line

1980-88

Growth of Regional Grid Systems as Associated Transmission System with Central Sector Generation

1989

Development of HVDC back-to-back System

1977

Introduction of 400 kV voltage level

1965-73

Interconnection of State Grids to form Regional Grid Systems

1964

Constitution of Regional Electricity Boards for integrated operation of grid at regional level

1950-60

Growth of State Grids and introduction of 220 kV voltage level

1948

Electricity (Supply) Act- 1948. The Act provided for establishment of the Central Electricity Authority (CEA) and the State Electricity Boards