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Cologno Monzese power station

Gas power plant in Milan, Italy. Approximate location 45.53356, 9.26311.

GasMilanItalyCCGT · HRSG

Cologno Monzese power station is a 50 MW gas power plant in Milan, Italy. It is operated by A2A SpA. Based on its capacity (estimated), it can supply roughly 56k homes (estimated). It ranks #210 of 489 Italy power plants by installed capacity. Commissioned in 1998, it is around 28 years old — long-established. In context, gas supplies about 47.2% of Italy's electricity; the national grid averages 285 gCO₂/kWh (48.8% low-carbon) (2025).

50MW installed capacity
1HRSG unit(s)
56,314homes powered (est.)
1998commissioned (~28 yrs)

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

Data status

Known data

FacilityCologno Monzese power station GEM-GOGPT
CountryItaly · Milan GEM-GOGPT
Coordinates45.53356, 9.26311 GEM-GOGPT
FuelGas GEM-GOGPT
MW installed capacity50 MW GEM · 2026 · L100000400369; operating plant capacity
OwnerA2A SpA GEM-GOGPT
Commissioned1998 GEM-GOGPT
TechnologyCCGT · HRSG GEM-GOGPT

Calculated from dataset

CO₂ emissions78,840 t CO₂·a⁻¹ calculated
Capacity rank in country#210 / 489 calculated
Fuel-specific rank in country#104 / 118 calculated
Capacity vs country/fuel peers0.15× · 324 MW · n=118 calculated
Homes-powered equivalent56,314 calculated
Climate12.5°C · HDD 2,362 derived from coordinates
Environmental severityC3 · 35/100 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 · L100000400369; fuel: GEM GOGPT

In context: how this plant compares

At 50 MW, Cologno Monzese 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.

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 A2A SpA.

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 temperate oceanic climate (Köppen Cfb) — Northern Hemisphere, latitude 45.5°N — which shapes how much energy it can produce and how its output varies through the year.

12.5°Cannual mean temp
2,362heating degree-days (base 18°C)
382cooling degree-days (base 18°C)
94 melevation

Monthly mean temperature

J: 2 °CJF: 4 °CFM: 8 °CMA: 12 °CAM: 17 °CMJ: 20 °CJJ: 23 °CJA: 22 °CAS: 19 °CSO: 13 °CON: 7 °CND: 3 °CD23 °C

Heating degree-days here run 4% below 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: 49/100 — this site sits in the mid 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 humidity / wetness the leading environmental stress.

C3ISO 9223 corrosivity (indicative)
35/100environmental-severity index
21.0°Cseasonal temperature swing
141 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 #104 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 45.53356, 9.26311 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Cologno Monzese power station?

Cologno Monzese power station is a 50 MW gas power plant in Milan, Italy, commissioned in 1998.

How many homes can Cologno Monzese power station power?

Its output is enough to supply roughly 56,314 homes (estimated).

Who operates Cologno Monzese power station?

Cologno Monzese power station is operated by A2A SpA.

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