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ASSEMINI

Oil power plant in Sardinia, Italy. Approximate location 39.2269, 8.9972.

OilSardiniaItalyOCGT

ASSEMINI is a 180 MW oil power station in Sardinia, Italy. It is operated by Italy Ministry of Economy and Finance. Based on its capacity (estimated), it can supply roughly 135k homes (estimated). It ranks #115 of 489 Italy power plants by installed capacity. Commissioned in 1992, it is around 34 years old — long-established. In context, oil supplies about 2.6% of Italy's electricity; the national grid averages 285 gCO₂/kWh (48.8% low-carbon) (2025).

180Source-backed capacity
135,154homes powered (est.)
1992commissioned (~34 yrs)

Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1002848.

Data status

Known data

FacilityASSEMINI WRI
CountryItaly · Sardinia WRI
Coordinates39.2269, 8.9972 WRI
FuelOil WRI
MW installed capacity180 MW WRI source record; scope not independently normalised
OwnerItaly Ministry of Economy and Finance WRI
Commissioned1992 WRI
TechnologyOCGT WRI

Calculated from dataset

CO₂ emissions354,780 t CO₂/yr calculated
Capacity rank in country#115 of 489 calculated
Fuel-specific rank in country#10 of 15 calculated
Capacity vs country/fuel peers0.86× · 210 MW median · 15 peers calculated
Homes-powered equivalent135,154 calculated
Climate16.9°C · HDD 1,100 derived from coordinates
Environmental severityC4 · 41/100 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 operating-unit sum (location L100000408812); fuel: WRI source-record fuel

In context: how this plant compares

At 180 MW, ASSEMINI is below the median oil plant in Italy (210 MW). Technically it is described as OCGT. Oil-fired plants burn heavy fuel oil or diesel, usually as peaking or backup capacity on islands and grids without gas pipelines; high fuel cost keeps their utilisation low.

Capacity comparison computed from the WRI Global Power Plant Database; fuel-type context is general engineering background.

Capacity vs largest oil plants in Italy

PORTO TOLLE: 2,640 MW3kPORTO TOLLETURBIGO: 1,285 MW1kTURBIGOPIOMBINO TERMICA: 1,280 MW1kPIOMBINO T…ROSSANO TE: 1,200 MW1kROSSANO TESAN FILIPPO DEL MELA: 960 MW960SAN FILIPP…Portoscuso: 320 MW320PortoscusoLIVORNO MARZOCCO: 310 MW310LIVORNO MA…AUGUSTA C.LE: 210 MW210AUGUSTA C.…

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

Owner

Operated by Italy Ministry of Economy and Finance.

Local climate & thermal context

This oil plant burns oil or diesel to drive turbines or reciprocating engines. It sits in a hot-summer Mediterranean climate (Köppen Csa) — Northern Hemisphere, latitude 39.2°N — which shapes how much energy it can produce and how its output varies through the year.

16.9°Cannual mean temp
1,100heating degree-days (base 18°C)
711cooling degree-days (base 18°C)
34 melevation

Monthly mean temperature

J: 10 °CJF: 10 °CFM: 12 °CMA: 14 °CAM: 18 °CMJ: 22 °CJJ: 25 °CJA: 25 °CAS: 22 °CSO: 19 °CON: 14 °CND: 11 °CD25 °C

Heating degree-days here run 55% 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: 27/100 — this site sits in the bottom third of the power plants we cover by heating degree-days.

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 corrosive environment (estimated ISO 9223 class C4 — High), with marine corrosion the leading environmental stress.

C4ISO 9223 corrosivity (indicative)
41/100environmental-severity index
15.2°Cseasonal temperature swing
21 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 #10 largest oil power plant of 15 in Italy by capacity.

Italy has 15 oil power plants in this dataset, together about 9,157 MW of capacity.

Nearby power plants

Location

Coordinates 39.2269, 8.9972 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is ASSEMINI?

ASSEMINI is a 180 MW source-record oil power plant in Sardinia, Italy, commissioned in 1992.

How many homes can ASSEMINI power?

Its output is enough to supply roughly 135,154 homes (estimated).

Who operates ASSEMINI?

ASSEMINI is operated by Italy Ministry of Economy and Finance.

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