PowerGrid Corporation of India
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|Traded as||NSE: POWERGRID
|Founded||23 October 1992|
|Key people||Shri R.N. Nayak(Chairman & MD)|
|Products||transmission and distribution; energy trading|
|Revenue||10035 crore (US$1.8 billion)(2011-12)|
|Net income||3255 crore (US$600 million)(2011-12)|
Power Grid Corporation of India Limited (POWERGRID), (NSE: POWERGRID, BSE: 532898) is an Indian state-owned electric utilities company headquartered in Gurgaon, India. Power Grid wheels about 50% of the total power generated in India on its transmission network. Power Grid has a pan-India presence with around 95,329 Circuit-km of Transmission network and 156 EHVAC & HVDC sub-stations with a total transformation capacity of 138,673 MVA. The Inter-regional capacity is enhanced to 28,000 MW. Power Grid has also diversified into Telecom business and established a telecom network of more than 25,000 km across the country. Power Grid has consistently maintained the transmission system availability over 99.00% which is at par with the International Utilities.
In 1980 the Rajadhyaksha Committee on Power Sector Reforms submitted its report to the Government of India suggesting extensive reforms in the Indian power sector. Based on the recommendations of the Rajadhyaksha Committee, in 1981 the Government of India took the policy decision to form a national power grid which would pave the way for the integrated operation of the central and regional transmission systems. Pursuant to this decision to form a national power grid, PowerGrid was incorporated on October 23, 1989 under the companies Act, 1956 as the National Power Transmission Corporation Limited, with the responsibility of planning, executing, owning, operating and maintaining the high voltage transmission systems in the country. The Company received a certificate for commencement of business on November 8, 1990. Subsequently, the name of the Company was changed to Power Grid Corporation of India Limited with effect from October 23, 1992.
POWERGRID transmission network failure 
The Northern Region Grid, which provides power to nine states in northern India including Delhi, experienced a widespread outage due to a grid disturbance that occurred at about 2.35 a.m on 30 July 2012.
Restoration work started immediately under the direction of CEO, POSOCO and POWERGRID’s Chairman & Managing Director. A team of engineers tried to find out a way for restoring the normal supply of power immediately, so that railways, Metro, airports and other power users deemed essential could get immediate restoration of electricity. With the coordinated efforts of the whole team of engineers and constituent state utilities, power supply to the essential services and other essential loads in northern India was restored by about 8.00 a.m. and about 60% of load of the Northern Region was restored by 11:00 a.m. This was possible by gearing up the power supply from hydroelectric sources and also extending power from the Eastern and Western regions for start-up supply for thermal generating units of the Northern Region. Thus the associated problems for want of power supply could be partially overcome by this time. Later, power supply was restored progressively and by 12:30 p.m. power was extended to most of the cities and towns through POWERGRID substations. The Northern Grid was brought back to normalcy to meet the demand of about 30 GW at 7:00 p.m.
On 31 July 2012, the northern grid collapsed for a second time, hours after the power supply was restored in the entire northern region following a disruption on the previous day. The eastern transmission lines also failed, disrupting power supply in Delhi, Uttar Pradesh, Haryana, West Bengal, Assam and Punjab, among other states.
- Independent audit of Grids
Power Minister Veerappa Moily said that transmission grids will be independently audited in three months to ensure that the grids are fail-safe.
See also 
- "Powerless again: Northern, eastern grids fail". 31 July 2012.
- "‘Independent audit of grids in 3 months’". 7 August 2012.
- Power Grid Corporate Web-Site
- National Load Despatch Centre Web-Site
- Northern Regional Load Despatch Centre Web-Site
- Western Regional Load Despatch Centre Web-Site
- Eastern Regional Load Despatch Centre Web-Site
- Southern Regional Load Despatch Centre Web-Site
- North-Eastern Regional Load Despatch Centre Web-Site