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Sant Joan Mill power station

Gas power plant in Girona, Spain. Approximate location 42.21502, 2.51511.

GasGironaSpainCCGT · HRSGCO₂ measured

Sant Joan Mill power station is a 25 MW gas power plant in Girona, Spain. It is operated by Torraspapel SA [100%]. Based on its capacity (estimated), it can supply roughly 28k homes (estimated). It ranks #495 of 899 Spain power plants by installed capacity. Commissioned in 2011, it is around 15 years old — relatively modern. Its annual emissions of 64,245 t CO₂/yr (EU ETS verified (EUTL 2023)) are equivalent to about 15k cars driven for a year. In context, gas supplies about 21.6% of Spain's electricity; the national grid averages 154 gCO₂/kWh (74.6% low-carbon) (2025).

25MW installed capacity
1HRSG unit(s)
28,157homes powered (est.)
64,245t CO₂ / yr (EU ETS verified (EUTL 2023))
2011commissioned (~15 yrs)

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

Data status

Known data

FacilitySant Joan Mill power station GEM-GOGPT
CountrySpain · Girona GEM-GOGPT
Coordinates42.21502, 2.51511 GEM-GOGPT
FuelGas GEM-GOGPT
MW installed capacity25 MW GEM · 2026 · L100000401440; operating plant capacity
OwnerTorraspapel SA [100%] GEM-GOGPT
Commissioned2011 GEM-GOGPT
TechnologyCCGT · HRSG GEM-GOGPT
CO₂ emissions64,245 t CO₂·a⁻¹ measured · EU ETS verified (EUTL 2023)

Calculated from dataset

Capacity rank in country#495 / 899 calculated
Fuel-specific rank in country#71 / 95 calculated
Capacity vs country/fuel peers0.46× · 54 MW · n=95 calculated
Homes-powered equivalent28,157 calculated
Environmental severityC4 · 34/100 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 · L100000401440; fuel: GEM GOGPT

In context: how this plant compares

At 25 MW, Sant Joan Mill power station is below the median gas plant in Spain (54 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.

64,245 t CO₂/yr — in everyday terms

This facility's annual emissions are roughly equivalent to:

15kpassenger cars driven for a year
8.4khomes' yearly energy use
1.1 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 Spain

BESOS GRUPO 5: 1,671 MW2kBESOS GRU…ARCOS DE LA FRONTERA GRUPO 1: 1,585 MW2kARCOS DE L…CARTAGENA GRUPO 1: 1,249 MW1kCARTAGENA …Cartagena (Escombreras) power station: 1,249 MW1kCartagena …CCC SAGUNTO GRUPO 2: 1,232 MW1kCCC SAGUNT…ESCOMBRERAS GRUPO 1: 1,199 MW1kESCOMBRERA…El Fangal power station: 1,199 MW1kEl Fangal …PALOS DE LA FRONTERA GRUPO 1: 1,167 MW1kPALOS DE L…

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

Owner

Operated by Torraspapel SA [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 42.2°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 corrosive environment (estimated ISO 9223 class C4 — High), with humidity / wetness the leading environmental stress.

C4ISO 9223 corrosivity (indicative)
34/100environmental-severity index
15.0°Cseasonal temperature swing
37 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 #71 largest gas power plant of 95 in Spain by capacity.

Spain has 95 gas power plants in this dataset, together about 32,018 MW of capacity.

Nearby power plants

Location

Coordinates 42.21502, 2.51511 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.

Frequently asked questions

What type of power plant is Sant Joan Mill power station?

Sant Joan Mill power station is a 25 MW gas power plant in Girona, Spain, commissioned in 2011.

How many homes can Sant Joan Mill power station power?

Its output is enough to supply roughly 28,157 homes (estimated).

Who operates Sant Joan Mill power station?

Sant Joan Mill power station is operated by Torraspapel SA [100%].

How much CO₂ does Sant Joan Mill power station emit?

Sant Joan Mill power station has measured emissions of about 64,245 tonnes of CO₂ per year (EU ETS verified (EUTL 2023)).

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