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Nickname(s): City of 7th NTPC
Kahalgaon is located in Bihar
Location in Bihar, India
Coordinates: 25°16′N 87°13′E / 25.27°N 87.22°E / 25.27; 87.22Coordinates: 25°16′N 87°13′E / 25.27°N 87.22°E / 25.27; 87.22
Country  India
State Bihar
District Bhagalpur
 • Type Municipality
 • Total 25 km2 (10 sq mi)
Elevation 16 m (52 ft)
Population (2011)
 • Total 200,000
 • Density 8,000/km2 (21,000/sq mi)
 • Official Angika, Hindi
Time zone IST (UTC+5:30)
Vehicle registration BR 10

Kahalgaon (formerly known as Colgong during British rule) is a town and a municipality in Bhagalpur district in the state of Bihar, India. It is located close to the Vikramashila, that was once a famous centre of Buddhist learning across the world, along with Nalanda during the Pala dynasty. The Kahalgaon Super Thermal Power Plant (KhSTPP) is located near the town(3 km).

How to reach Kahalgaon[edit]

By Air[edit]

The nearest airport is Patna Airport which is 260 km away. From Patna regular flights are available for major Indian cities Delhi, Kolkata, Mumbai and Bangalore.

By Train[edit]

Kahalgaon railway station, one of the oldest station of Bihar, serves the Howrah-Kiul loop line. The city is situated on the broad-gauge Loop Line of Eastern Railway. Kahalgaon is well connected to all cities by train.

By Road[edit]

Kahalgaon is connected by an excellent network of national and state highways, along with district and rural roads. National Highway 80 (NH 80) runs from the Mokama-Farakka via Bhagalpur, Kahalgaon. It links directly with Patna, via Begusarai and Khagaria.


As of 2001 India census,Colgong had a population of 22,110. Male constitute 53% of the population and female 47%. Colgong has an average literacy rate of 57%, lower than the national average of 59.5%: male literacy is 63% and, female literacy is 50%. In Colgong, 17% of the population is under 6 years of age. Angika is the local dialect and is spoken by majority. Hindi, Urdu, and English are also spoken by different section of the population.


Vikramashila: Close to Kahalgaon are the remains of the great Vikramashila Mahavihara, that was famous as a centre of advanced learning across the world in the ancient times. Mahmud Shah's Tomb: Kahalgaon also houses the Tomb of Mahmud Shah, the last independent king of erstwhile Bengal, who died here a few days after his army was defeated by Sher Shah. The SSV college, which is a degree college, was the main stock center of business of indigo(Nil, used for white cloth) at the time of The British rule in India.

Premedieval Era: Kahalgaon is named after Kahol Rishi, the father of the saint named Ashtavakra (popularly known in the Mahabharata). Ashtavakra was one of the greatest saints who got his body Vakara from eight places so was named as Ashtavakra. He set free his father from jail of the king by winning the a contest on Shastra.

Medieval Era: Kahalgaon was the education hub in the Middle Ages. Vikramashila was one of the two most important centers of Buddhist learning in India, along with Nalanda during the Pala dynasty. Vikramashila was established by King Dharmapala (rule: 770 – 810 CE) in response to a supposed decline in the quality of scholarship at Nālandā. Atisha, the renowned pandita, is sometimes listed as a notable abbot.

Modern Era: In the vicinity of the town, now stands afirm the thermal power project from NTPC, known as KhSTPP. The project has an installed capacity of 2340 MW developed in two stages. The first stage had 4 units of 210 MW capacity each and the second expansion had 3 units of 500 MW.

Arrival of NTPC in the town, marked the arrival of world-class infrastructure, healthcare and education, which would have taken years to reach to people otherwise. Kahalgaon now enjoys the luxury of the best. Education has taken a front-runner in the normal routine and the setup has also created enough jobs and businesses around itself. The townships of NTPC are wonderfully-planned, with lush greenery. It has parks, shopping complexes, clubhouses, stadium and transit-camps apart from housing for employees. The peace that Kahalgaon has is remarkable.

NTPC Kahalgaon[edit]

The National Thermal Power Corporation, popularly known as NTPC is also set up in Kahalgaon, also named KhSTPP since early 80s. The total capacity of the plant was 2340 megawatts, Stage-I: 840 MW and Stage-II: 1500 MW.

NTPC power plant uses Rajmahal Coal Fields of Eastern Coalfields Limited](Lalmatiya) as the coal source for producing electricity. Ganga river serves as a major source of water. Normally PLF is about 70% here because lack of coal. It has 4x210 MW units of Russian make and 3x500 MW units of German make supplied by BHEL. This power plant serves as a beneficiary for West Bengal, Bihar, Jharkhand, Orissa, Sikkim states.


Vikramashila Mahavihara[edit]

Vikramashila (vill-Antichak) is located 13 km from Kahalgaon. It is famous for ancient Vikramashila, founded by Dharmapala, a Pala King, in the 8th century, the educational institution served as a learning center of Tantric Buddhism. At the center of the building was a huge Buddhist temple, surrounded by 108 smaller temples. The remains excavated from this university made Vikramashila one of the most important historic places near Kahalgaon. It produced eminent scholars who were often invited by foreign countries to spread Buddhist learning, culture and religion. The most distinguished and eminent among all was Atisa Dipankara, the founder of Lamaism in Tibet. Subjects like theology, philosophy, grammar, metaphysics, and logic were taught here but the most important branch of learning was tantrism.

Tapas Dham temple/Shantibaba Temple[edit]

It is situated amid of Ganga River, 500 m away from the bank of the river. shiva shiv temple/NTPC camps tapas dham

Mahmud Shah's tomb[edit]

Mahmud Shah was the last independent King of Bengal who died at Kahalgaon in 1539 A.D. After his defeat at the hands of Sher Shah, the mighty Pathan ruler, he took refuge with the Mughal Emperor Humayun at Chunar. In his absence from Bengal his capital was stormed and sacked and his two sons were murdered by the Afghans. Mahmud Shah, after joining hands with the Mughal emperor Humayun, advanced as far as Kahalgaon to attack Sher Shah. But, after hearing the news of the death of his two sons and the plunder of his capital, he was so shocked that only after a few days' illness he died at Kahalgaon in 1539 A.D., where his tomb was built later. The tomb of Mahmud Shah is, therefore, of great historical significance.


Bhagalpur is famous for high quality silk products, the industry is more than 100 years old with traditional clans of silk producers and weavers living here.