HSCo CHP

Gas power plant in Connecticut, United States of America. Approximate location 41.7614, -72.6686.

GasConnecticutUnited States of America

HSCo CHP is a 4 MW gas power plant in Connecticut, United States of America. It is operated by Hartford Steam Co. Based on reported annual generation of 28 GWh, it can supply roughly 8.0k homes. It ranks #7604 of 10,938 United States of America power plants by installed capacity. Commissioned in 2009, it is around 17 years old — relatively modern. 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).

4Source-backed capacity
28GWh reported / yr
8,028homes powered
2009commissioned (~17 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id USA0057179.

Data status

Known data

FacilityHSCo CHP WRI
CountryUnited States of America · Connecticut WRI
Coordinates41.7614, -72.6686 WRI
FuelGas WRI
MW installed capacity4 MW WRI source record; scope not independently normalised
OwnerHartford Steam Co WRI
Commissioned2009 WRI
GWh reported / yr28 GWh/yr WRI

Calculated from dataset

CO₂ emissions11,240 t CO₂/yr calculated
Capacity rank in country#7604 of 10938 calculated
Fuel-specific rank in country#1972 of 2165 calculated
Capacity vs country/fuel peers0.03× · 121 MW median · 2165 peers calculated
Homes-powered equivalent8,028 calculated from reported generation
Climate10.0°C · HDD 3,217 derived from coordinates
Environmental severityC3 · 34/100 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/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: Wikidata P2109 nameplate capacity; fuel: WRI source-record fuel

In context: how this plant compares

At 4 MW, HSCo CHP 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: 29 GWh20132014: 28 GWh20142015: 27 GWh20152016: 29 GWh20162017: 28 GWh20172018: 27 GWh20182019: 28 GWh201929 GWh

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

Owner

Operated by Hartford Steam Co.

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 41.8°N — which shapes how much energy it can produce and how its output varies through the year.

10.0°Cannual mean temp
3,217heating degree-days (base 18°C)
315cooling degree-days (base 18°C)
53 melevation

Monthly mean temperature

J: -3 °CJF: -2 °CFM: 3 °CMA: 9 °CAM: 15 °CMJ: 20 °CJJ: 23 °CJA: 22 °CAS: 18 °CSO: 11 °CON: 6 °CND: 0 °CD23 °C

Heating degree-days here run 31% 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: 69/100 — 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 moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with thermal cycling the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
34/100environmental-severity index
25.9°Cseasonal temperature swing
110 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 #1972 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 41.7614, -72.6686 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is HSCo CHP?

HSCo CHP is a 4 MW source-record gas power plant in Connecticut, United States of America, commissioned in 2009.

How much electricity does HSCo CHP generate?

HSCo CHP generates about 28 GWh of electricity per year.

How many homes can HSCo CHP power?

Its output is enough to supply roughly 8,028 homes.

Who operates HSCo CHP?

HSCo CHP is operated by Hartford Steam Co.

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