The Power Grid Corporation of India Limited (POWERGRID) is an Indian state-owned electric utilities company headquartered in Gurgaon, India.

There are five regional grids in the country:

1. Northern
2. Southern
3. Eastern
4. North-eastern
5. Western

The chronological sequence of events that took place towards the evolution of National Grid is as follows:

Grid management on regional basis started in 60s.

Initially, State grids were inter-connected to form regional grid and India was demarcated into 5 regions namely Northern, Eastern, Western, North Eastern and Southern region.

In October 1991 North Eastern and Eastern grids were connected.

In March 2003 WR and ER-NER were interconnected.

August 2006 North and East grids were interconnected thereby 4 regional grids Northern, Eastern, Western and North Eastern grids are synchronously connected forming central grid operating at one frequency.

On December 31, 2013, Southern Region was connected to Central Grid in Synchronous mode with the commissioning of 765kV Raichur-Solapur Transmission line thereby achieving ‘ONE NATION’-‘ONE GRID’-‘ONE FREQUENCY’.

Contact:

Registered Office
B-9, Qutab Institutional Area
Katwaria Sarai, New Delhi-110016
EPABX : 011-26560112, 26560115, 26560193, 26564892
Telephone 91-124-2571700 through 2571719
FAX 91-124-2571760, 2571761