Power Grid Corporation of India Limited, a central transmission utility, engages in the transmission of power in India. As of October 31, 2020, it owned and operated 1,68,140 circuit kms of transmission lines, as well as 220 EHV substations with transformation capacity of 4,19,815 MVA. The company also provides consultancy services, including power system planning and techno-economic feasibility studies; environmental and social impact assessment; design and engineering; procurement assistance; project management and construction supervision; asset management; and other services, such as ownersÃ¢ÂÂ and lendersÃ¢ÂÂ engineer service; grid code preparation; tariff mechanisms preparation; legal and technical advisory; and market analysis advisory services. Power Grid Corporation of India Limited offers its consultancy services to firms, utilities, government departments, and IFIs in Afghanistan, Bangladesh, Kenya, Ethiopia, the United Arab Emirates, Nepal, Bhutan, Myanmar, Kyrgyzstan, Tajikistan, and Pakistan. In addition, it provides overhead optic fiber network services using optical ground wire on power transmission lines under the POWERTEL brand name. The company was formerly known as National Power Transmission Corporation Limited and changed its name to Power Grid Corporation of India Limited in October 1992. Power Grid Corporation of India Limited was incorporated in 1989 and is headquartered in Gurugram, India.