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SERMIDE

Gas power plant in Lombardy, Italy. Approximate location 45.0265, 11.2522.

GasLombardyItalyCCGT · HRSGCO₂ measured

SERMIDE is a 1,151 MW gas power station in Lombardy, Italy. It is operated by Edipower. Based on reported annual generation of 939 GWh, it can supply roughly 268k homes. It ranks #16 of 489 Italy power plants by installed capacity. Commissioned in 2004, it is around 22 years old — relatively modern. Its annual emissions of 546,275 t CO₂/yr (EU ETS verified (EUTL 2023)) are equivalent to about 127k 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).

1,151Source-backed capacity
2HRSG unit(s)
939GWh reported / yr
268,257homes powered
546,275t CO₂ / yr (EU ETS verified (EUTL 2023))
2004commissioned (~22 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1002951.

Data status

Known data

FacilitySERMIDE WRI
CountryItaly · Lombardy WRI
Coordinates45.0265, 11.2522 WRI
FuelGas WRI
MW installed capacity1,151 MW WRI source record; scope not independently normalised
OwnerEdipower WRI
Commissioned2004 WRI
TechnologyCCGT · HRSG WRI
GWh reported / yr939 GWh/yr WRI
CO₂ emissions546,275 t CO₂/yr measured · EU ETS verified (EUTL 2023)

Calculated from dataset

Capacity rank in country#16 of 489 calculated
Fuel-specific rank in country#7 of 118 calculated
Capacity vs country/fuel peers3.55× · 324 MW median · 118 peers calculated
Homes-powered equivalent268,257 calculated from reported generation
Climate13.6°C · HDD 2,154 derived from coordinates
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 tracker 2026 (location L100000400446); fuel: WRI source-record fuel

In context: how this plant compares

At 1,151 MW, SERMIDE is well above 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.

546,275 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

127kpassenger cars driven for a year
71khomes' yearly energy use
9.1 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 Edipower. 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 humid subtropical climate (Köppen Cfa) — Northern Hemisphere, latitude 45.0°N — which shapes how much energy it can produce and how its output varies through the year.

13.6°Cannual mean temp
2,154heating degree-days (base 18°C)
579cooling degree-days (base 18°C)
7 melevation

Monthly mean temperature

J: 2 °CJF: 5 °CFM: 9 °CMA: 13 °CAM: 18 °CMJ: 22 °CJJ: 24 °CJA: 24 °CAS: 20 °CSO: 14 °CON: 8 °CND: 3 °CD24 °C

Heating degree-days here run 12% 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: 45/100 — 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)
37/100environmental-severity index
22.0°Cseasonal temperature swing
92 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 #7 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 45.0265, 11.2522 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is SERMIDE?

SERMIDE is a 1,151 MW source-record gas power plant in Lombardy, Italy, commissioned in 2004.

How much electricity does SERMIDE generate?

SERMIDE generates about 939 GWh of electricity per year.

How many homes can SERMIDE power?

Its output is enough to supply roughly 268,257 homes.

Who operates SERMIDE?

SERMIDE is operated by Edipower.

How much CO₂ does SERMIDE emit?

SERMIDE has measured emissions of about 546,275 tonnes of CO₂ per year (EU ETS verified (EUTL 2023)).

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