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SESTO SAN GIOVANNI

Gas power plant in Lombardy, Italy. Approximate location 45.5417, 9.2539.

GasLombardyItalyCCGT · HRSGCO₂ measured

SESTO SAN GIOVANNI is a 111 MW gas power station in Lombardy, Italy. It is operated by Edison SpA [100%]. Based on reported annual generation of 113 GWh, it can supply roughly 32k homes. It ranks #155 of 489 Italy power plants by installed capacity. Commissioned in 1994, it is around 32 years old — long-established. Its annual emissions of 97,343 t CO₂/yr (EU ETS verified (EUTL 2023)) are equivalent to about 23k 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).

111Source-backed capacity
2HRSG unit(s)
113GWh reported / yr
32,257homes powered
97,343t CO₂ / yr (EU ETS verified (EUTL 2023))
1994commissioned (~32 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1002952.

Data status

Known data

FacilitySESTO SAN GIOVANNI WRI
CountryItaly · Lombardy WRI
Coordinates45.5417, 9.2539 WRI
FuelGas WRI
MW installed capacity111 MW WRI source record; scope not independently normalised
OwnerEdison SpA [100%] WRI
Commissioned1994 WRI
TechnologyCCGT · HRSG WRI
GWh reported / yr113 GWh/yr WRI
CO₂ emissions97,343 t CO₂/yr measured · EU ETS verified (EUTL 2023)

Calculated from dataset

Capacity rank in country#155 of 489 calculated
Fuel-specific rank in country#81 of 118 calculated
Capacity vs country/fuel peers0.34× · 324 MW median · 118 peers calculated
Homes-powered equivalent32,257 calculated from reported generation
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 tracker 2026 (location L100000400448); fuel: WRI source-record fuel

In context: how this plant compares

At 111 MW, SESTO SAN GIOVANNI 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.

97,343 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

23kpassenger cars driven for a year
13khomes' yearly energy use
1.6 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).

Reported generation trend

2015: 160 GWh20152016: 172 GWh20162017: 113 GWh2017172 GWh

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

Owner

Operated by Edison SpA [100%].

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 #81 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 45.5417, 9.2539 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is SESTO SAN GIOVANNI?

SESTO SAN GIOVANNI is a 111 MW source-record gas power plant in Lombardy, Italy, commissioned in 1994.

How much electricity does SESTO SAN GIOVANNI generate?

SESTO SAN GIOVANNI generates about 113 GWh of electricity per year.

How many homes can SESTO SAN GIOVANNI power?

Its output is enough to supply roughly 32,257 homes.

Who operates SESTO SAN GIOVANNI?

SESTO SAN GIOVANNI is operated by Edison SpA [100%].

How much CO₂ does SESTO SAN GIOVANNI emit?

SESTO SAN GIOVANNI has measured emissions of about 97,343 tonnes of CO₂ per year (EU ETS verified (EUTL 2023)).

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