CASTEJON GRUPO 2 is a 797.4 MW gas power station in Navarre, Spain. It is operated by HIDROELECTRICA DEL CANTABRICO S.A.. Based on reported annual generation of 537 GWh, it can supply roughly 154k homes. It ranks #36 of 899 Spain power plants by installed capacity. Commissioned in 2007, it is around 19 years old — relatively modern. Its annual emissions of 764,149 t CO₂/yr (EU ETS verified (EUTL 2023)) are equivalent to about 178k 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).
Plant data: WRI Global Power Plant Database (CC BY 4.0), id WRI1006317.
Data status
Known data
Calculated from dataset
Not available
Known, modelled and calculated values are kept separate. Missing fields are shown as unavailable.
Data provenance
Capacity and fuel are the upstream open-dataset record, not yet matched to a 2026 registry or GEM entry.
capacity: WRI GPPD; fuel: WRI GPPD
In context: how this plant compares
At 797.4 MW, CASTEJON GRUPO 2 is well above the median gas plant in Spain (54 MW). 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.
764,149 t CO₂/yr — in everyday terms
This facility's annual emissions are roughly equivalent to:
Equivalencies via US EPA Greenhouse Gas Equivalencies; emissions per EU ETS verified (EUTL 2023) (measured for US EPA/EU ETS, modelled for Climate TRACE).
Key facts
- Load factor
- 8%, from 537 GWh of reported generation; the median for 24 gas plants in Spain that report generation is 15%
- Generation trend
- 342 GWh in 2015 and 537 GWh in 2017 (+57%)
- Highest and lowest year
- 2016: 633 GWh; 2015: 342 GWh
- Share of Spain gas capacity
- 2.5% of 32,018 MW across 95 plants in this dataset
- Age among peers
- 51 of 83 dated gas plants in Spain are older
Calculated from the capacity and generation records in this dataset (WRI Global Power Plant Database (CC BY 4.0)).
Reported generation trend
Annual generation (GWh), WRI Global Power Plant Database (CC BY 4.0).
Owner
Operated by HIDROELECTRICA DEL CANTABRICO S.A.. 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 42.2°N — which shapes how much energy it can produce and how its output varies through the year.
Monthly mean temperature
Heating degree-days here run 27% 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: 39/100 — 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
This site sits in a moderately corrosive environment (estimated ISO 9223 class C3 — Medium), with humidity / wetness the leading environmental stress.
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 #18 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
- CTCC CASTEJON GRUPO 1 · Gas · 424.9 MW · Navarre
- Castejon · Solar · 6.2 MW · Navarre
- Valtierra · Solar · 12.4 MW · Navarre
- Valtierra II · Solar · 5.9 MW · Navarre
- Arguedas III · Solar · 7.1 MW · Navarre
- Corella · Solar · 10.9 MW · Navarre
Location
Coordinates 42.1718, -1.6773 from WRI Global Power Plant Database (CC BY 4.0). View on OpenStreetMap.
Frequently asked questions
What type of power plant is CASTEJON GRUPO 2?
CASTEJON GRUPO 2 is a 797.4 MW gas power plant in Navarre, Spain, commissioned in 2007.
How much electricity does CASTEJON GRUPO 2 generate?
CASTEJON GRUPO 2 generates about 537 GWh of electricity per year.
Who operates CASTEJON GRUPO 2?
CASTEJON GRUPO 2 is operated by HIDROELECTRICA DEL CANTABRICO S.A..
How much CO₂ does CASTEJON GRUPO 2 emit?
CASTEJON GRUPO 2 has measured emissions of about 764,149 tonnes of CO₂ per year (EU ETS verified (EUTL 2023)).