Here are some remarkable years or land mark in electrical power sector of India.
In 1887 First hydro based power plant was commissioned at Darjeeling in electrical power system of India.
In 1890 first steam based power plant was commissioned at Calcutta in electrical power system of India.
In 1955 first 132Kv AC transmission line was commissioned in electrical power system of India.
In 1959 first Nuclear power plant at trombay in electrical power system of India.
In 1961 first 220Kv AC transmission line was commissioned in electrical power system of India.
In 1964 different load dispatch center formed in electrical power system of India.
In 1975 first 400Kv Ac transmission line between Dehar and panipat was commissioned in electrical power system of India.
In 1978 first 500MW, 220Kv Thermal Power station was commissioned at Trombay and first 500 MW, 400Kv nuclear power station was commissioned at Tarapor in electrical power system of India.
In 1978 SF6 and Vacuums circuit breakers introduced in electrical power system of India.
In 1981 Biogas base power projects initiated nationalized in electrical power system of India.
In 1989 First Back to Back HVDC transmission line commissioned at vindyachal in electrical power system of India.
In 1989 Power Grid Corporation of India has been formed.
In 1989 First Gas base power plant formed in electrical Power system of India.
In 1991 First +/- 500Kv DC long transmission line Commissioned in electrical Power system of India.
In 1992 First wind turbine power generator commissioned in electrical power system of India.
In 1996 Generation is made open for private sector in electrical power system of India.
In 1997 Power Sector made open for Private sector in electrical power system of India.
In 2008 First 765Kv Ac transmission line Sipat-Seoni commissioned by Power grid corporation of India.