Bailly

Gas power plant in Indiana, United States of America. Approximate location 41.645, -87.1225.

GasIndianaUnited States of America

Bailly is a 38 MW gas power plant in Indiana, United States of America. It is operated by Northern Indiana Pub Serv Co. Based on its capacity (estimated), it can supply roughly 42k homes (estimated). It ranks #4076 of 10,938 United States of America power plants by installed capacity. Commissioned in 1968, it is around 58 years old — an older, legacy facility. In context, gas supplies about 40.0% of United States of America's electricity; the national grid averages 384 gCO₂/kWh (43.0% low-carbon) (2025).

38Legacy source-record capacity
42,235homes powered (est.)
1968commissioned (~58 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0000995.

Data status

Known data

FacilityBailly WRI
CountryUnited States of America · Indiana WRI
Coordinates41.645, -87.1225 WRI
FuelGas WRI
MW installed capacity38 MW WRI source record; scope not independently normalised
OwnerNorthern Indiana Pub Serv Co WRI
Commissioned1968 WRI

Calculated from dataset

CO₂ emissions59,130 t CO₂/yr calculated
Capacity rank in country#4076 of 10938 calculated
Fuel-specific rank in country#1483 of 2165 calculated
Capacity vs country/fuel peers0.31× · 121 MW median · 2165 peers calculated
Homes-powered equivalent42,235 calculated
Climate9.7°C · HDD 3,351 derived from coordinates
Environmental severityC4 · 41/100 derived from coordinates

Not available

TechnologyNot available not in dataset
GWh reported / yrNot available not in dataset

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

Data provenance

The capacity and fuel fields on this page are source-record values from the upstream open dataset. They are useful for identification and ranking, but they have not been upgraded to a 2026 registry/GEM-location verified value.

capacity: WRI Global Power Plant Database source-record (legacy); fuel: WRI source-record fuel

In context: how this plant compares

At 38 MW, Bailly is below the median gas plant in United States of America (121 MW). Gas plants burn natural gas either in open-cycle turbines for fast peaking, or in combined-cycle units that recover exhaust heat in an HRSG to reach roughly 55–62% efficiency — the cleanest-burning fossil option.

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

Reported generation trend

2013: 2,271 GWh20132014: 2,162 GWh20142015: 1,442 GWh20152016: 1,779 GWh20162017: 1,546 GWh20172018: 0 GWh20182019: 0 GWh20192k GWh

Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).

Owner

Operated by Northern Indiana Pub Serv Co. All plants by this company →

Local climate & thermal context

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a hot-summer humid continental climate (Köppen Dfa) — Northern Hemisphere, latitude 41.6°N — which shapes how much energy it can produce and how its output varies through the year.

9.7°Cannual mean temp
3,351heating degree-days (base 18°C)
330cooling degree-days (base 18°C)
207 melevation

Monthly mean temperature

J: -5 °CJF: -3 °CFM: 3 °CMA: 9 °CAM: 15 °CMJ: 20 °CJJ: 23 °CJA: 22 °CAS: 18 °CSO: 11 °CON: 5 °CND: -2 °CD23 °C

Heating degree-days here run 36% above the median power plant in this dataset — a proxy for how much extra energy heated equipment must replace through its surfaces in winter.

Climate heat-demand index: 72/100 — this site sits in the top third of the power plants we cover by heating degree-days.

A gas turbine here also runs ~0% below its ISO (15°C) rating at this annual mean (typical CCGT curve, estimate).

Climate normals: WorldClim 2.1 (1970–2000 monthly normals, 10 arc-min, CC BY 4.0); zone: Köppen-Geiger world climate classification (Kottek et al. 2006, 0.5° grid). Degree-days & heat-demand index computed by PowerAtlas — a modelled heat-demand proxy, not a measured site figure.

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 corrosive environment (estimated ISO 9223 class C4 — High), with thermal cycling the leading environmental stress.

C4ISO 9223 corrosivity (indicative)
41/100environmental-severity index
27.7°Cseasonal temperature swing
15 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 #1483 largest gas power plant of 2165 in United States of America by capacity.

United States of America has 2165 gas power plants in this dataset, together about 789,950 MW of capacity.

Nearby power plants

Location

Coordinates 41.645, -87.1225 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Bailly?

Bailly is a 38 MW source-record gas power plant in Indiana, United States of America, commissioned in 1968.

How many homes can Bailly power?

Its output is enough to supply roughly 42,235 homes (estimated).

Who operates Bailly?

Bailly is operated by Northern Indiana Pub Serv Co.

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