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Hera Casalegno power station

Gas power plant in Bologna, Italy. Approximate location 44.36995, 11.70129.

GasBolognaItalyCCGT · HRSGCO₂ measured

Hera Casalegno power station is a 86 MW gas power plant in Bologna, Italy. It is operated by Hera SpA [100%]. Based on its capacity (estimated), it can supply roughly 97k homes (estimated). It ranks #179 of 489 Italy power plants by installed capacity. Commissioned in 2009, it is around 17 years old — relatively modern. Its annual emissions of 91,556 t CO₂/yr (EU ETS verified (EUTL 2023)) are equivalent to about 21k cars driven for a year. In context, gas supplies about 47.2% of Italy's electricity; the national grid averages 285 gCO₂/kWh (48.8% low-carbon) (2025).

86MW installed capacity
1HRSG unit(s)
96,860homes powered (est.)
91,556t CO₂ / yr (EU ETS verified (EUTL 2023))
2009commissioned (~17 yrs)

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

Data status

Known data

FacilityHera Casalegno power station GEM-GOGPT
CountryItaly · Bologna GEM-GOGPT
Coordinates44.36995, 11.70129 GEM-GOGPT
FuelGas GEM-GOGPT
MW installed capacity86 MW GEM · 2026 · L100000400359; operating plant capacity
OwnerHera SpA [100%] GEM-GOGPT
Commissioned2009 GEM-GOGPT
TechnologyCCGT · HRSG GEM-GOGPT
CO₂ emissions91,556 t CO₂·a⁻¹ measured · EU ETS verified (EUTL 2023)

Calculated from dataset

Capacity rank in country#179 / 489 calculated
Fuel-specific rank in country#91 / 118 calculated
Capacity vs country/fuel peers0.27× · 324 MW · n=118 calculated
Homes-powered equivalent96,860 calculated
Environmental severityC3 · 37/100 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.

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 · L100000400359; fuel: GEM GOGPT

In context: how this plant compares

At 86 MW, Hera Casalegno power station is below the median gas plant in Italy (324 MW). Technically it is described as CCGT; combined-cycle with a heat-recovery steam generator (HRSG). 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.

91,556 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

21kpassenger cars driven for a year
12khomes' yearly energy use
1.5 milliontree seedlings grown 10 years to absorb it

Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions per EU ETS verified (EUTL 2023) (measured for US EPA/EU ETS, modelled for Climate TRACE).

Capacity vs largest gas plants in Italy

MONTALTO (Alessandro Volta): 3,446 MW3kMONTALTO (…TAVAZZANO: 1,950 MW2kTAVAZZANOLA CASELLA C.LE: 1,524 MW2kLA CASELLA…VADO Ligure: 1,353 MW1kVADO LigureENIPOWER BRINDISI: 1,170 MW1kENIPOWER B…OSTIGLIA: 1,168 MW1kOSTIGLIASERMIDE: 1,151 MW1kSERMIDETORREVALDALIGA South: 1,140 MW1kTORREVALDA…

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

Owner

Operated by Hera SpA [100%].

Climate zone & how it works

This gas plant burns natural gas in a turbine — often in a combined-cycle setup — to generate electricity. It sits in a temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 44.4°N — which shapes how much energy it can produce and how its output varies through the year.

~11°Ctypical annual mean
~18°Ctypical warm-season mean
Temperate oceanic: four distinct seasons — cold winters and warm summers

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)
37/100environmental-severity index
20.9°Cseasonal temperature swing
107 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 #91 largest gas power plant of 118 in Italy by capacity.

Italy has 118 gas power plants in this dataset, together about 53,570 MW of capacity.

Nearby power plants

Location

Coordinates 44.36995, 11.70129 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Hera Casalegno power station?

Hera Casalegno power station is a 86 MW gas power plant in Bologna, Italy, commissioned in 2009.

How many homes can Hera Casalegno power station power?

Its output is enough to supply roughly 96,860 homes (estimated).

Who operates Hera Casalegno power station?

Hera Casalegno power station is operated by Hera SpA [100%].

How much CO₂ does Hera Casalegno power station emit?

Hera Casalegno power station has measured emissions of about 91,556 tonnes of CO₂ per year (EU ETS verified (EUTL 2023)).

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