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Bongaigaon power station

Coal power plant in Assam, India. Approximate location 26.44437, 90.367205.

CoalAssamIndiasubcritical

Bongaigaon power station is a 750 MW coal power station in Assam, India. It is operated by NTPC Ltd [100%]. Based on its capacity (estimated), it can supply roughly 939k homes (estimated). It ranks #440 of 2,225 India power plants by installed capacity. Commissioned in 2015, it is around 11 years old — relatively modern. In context, coal supplies about 70.8% of India's electricity; the national grid averages 670 gCO₂/kWh (26.7% low-carbon) (2025).

750MW installed capacity
938,571homes powered (est.)
2015commissioned (~11 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id GEM_coa_bongaigaon_india.

Data status

Known data

FacilityBongaigaon power station GEM-coal
CountryIndia · Assam GEM-coal
Coordinates26.44437, 90.367205 GEM-coal
FuelCoal GEM-coal
MW installed capacity750 MW GEM · 2026 · L100000102085; operating plant capacity
OwnerNTPC Ltd [100%] GEM-coal
Commissioned2015 GEM-coal
Technologysubcritical GEM-coal

Calculated from dataset

CO₂ emissions3,285,000 t CO₂·a⁻¹ calculated
Capacity rank in country#440 / 2225 calculated
Fuel-specific rank in country#397 / 713 calculated
Capacity vs country/fuel peers0.75× · 1,000 MW · n=713 calculated
Homes-powered equivalent938,571 calculated
Environmental severityC3 · 34/100 derived from coordinates

Not available

GWh reported / yrNot available not in dataset

Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.

Capacity provenance

The public capacity above is the current source-record value. A 2026 tracker candidate lists 750 MW for Bongaigaon power station, but it is not used as the public primary value until scope is verified (unit vs operating vs installed/project total).

Data provenance

The capacity and/or fuel fields on this page include a source-backed provenance label from GEM, an official registry, Wikidata, OSM, or a cross-source match.

capacity: GEM · 2026 · L100000102085; fuel: GEM GCPT

In context: how this plant compares

At 750 MW, Bongaigaon power station is below the median coal plant in India (1,000 MW). Technically it is described as subcritical. Coal plants burn pulverised coal to raise high-pressure steam for a turbine; they run as baseload but are the most carbon-intensive mainstream source and the first targeted for retirement or efficiency retrofits.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

Capacity vs largest coal plants in India

Ontimavadi power station: 6,300 MW6kOntimavadi…Welspun Mega Industrial & Energy Park: 5,280 MW5kWelspun Me…Darlipali power station: 4,800 MW5kDarlipali …VINDH_CHAL STPS: 4,760 MW5kVINDH_CHAL…MUNDRA TPP: 4,620 MW5kMUNDRA TPPMundra Thermal Power Project (Adani): 4,620 MW5kMundra The…MUNDRA UMPP: 4,000 MW4kMUNDRA UMPPTata Mundra Ultra Mega Power Project: 4,000 MW4kTata Mundr…

Installed capacity (MW), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by NTPC Ltd [100%].

Climate zone & how it works

This coal plant burns coal to raise high-pressure steam that spins a turbine-generator. It sits in a humid subtropical (dry winter) climate (Köppen Cwa) — Northern Hemisphere, latitude 26.4°N — which shapes how much energy it can produce and how its output varies through the year.

~19°Ctypical annual mean
~27°Ctypical warm-season mean
Humid subtropical (dry winter): hot summers and mild winters

Climate zone & typical temperatures: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid).

Site climate & environmental severity

For a plant’s outdoor hardware — heat-recovery steam generators (HRSG), expansion joints, valves, flanges and their insulation — the local climate sets how fast unprotected steel and coatings degrade. This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
34/100environmental-severity index
10.4°Cseasonal temperature swing
474 kmdistance to coast

Higher environmental severity is exactly where protective removable insulation pays back most: a sheltered micro-climate slows corrosion, UV and thermal-cycling damage and extends outdoor hardware service life. This is an indicative site-climate context — not a condition assessment of any specific plant or operator.

Indicative estimate via the ISO 9223:2012 informative method (atmospheric corrosivity from temperature, time-of-wetness and airborne salinity), using WorldClim climate normals, the Köppen-Geiger class and coast distance. Indicative, not a measured corrosion rate.

How it compares & nearby plants

The #397 largest coal power plant of 713 in India by capacity.

India has 713 coal power plants in this dataset, together about 805,419 MW of capacity.

Nearby power plants

Location

Coordinates 26.44437, 90.367205 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Bongaigaon power station?

Bongaigaon power station is a 750 MW coal power plant in Assam, India, commissioned in 2015.

How many homes can Bongaigaon power station power?

Its output is enough to supply roughly 938,571 homes (estimated).

Who operates Bongaigaon power station?

Bongaigaon power station is operated by NTPC Ltd [100%].

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